1PERLDIAG(1) Perl Programmers Reference Guide PERLDIAG(1)
2
6 perldiag - various Perl diagnostics
7
9 These messages are classified as follows (listed in increasing order of
10 desperation):
11 (W) A warning (optional).
13 (D) A deprecation (enabled by default).
14 (S) A severe warning (enabled by default).
15 (F) A fatal error (trappable).
16 (P) An internal error you should never see (trappable).
17 (X) A very fatal error (nontrappable).
18 (A) An alien error message (not generated by Perl).
19 The majority of messages from the first three classifications above (W,
21 D & S) can be controlled using the "warnings" pragma.
22 If a message can be controlled by the "warnings" pragma, its warning
24 category is included with the classification letter in the description
25 below.
26 Optional warnings are enabled by using the "warnings" pragma or the -w
28 and -W switches. Warnings may be captured by setting $SIG{__WARN__} to
29 a reference to a routine that will be called on each warning instead of
30 printing it. See perlvar.
31 Severe warnings are always enabled, unless they are explicitly disabled
33 with the "warnings" pragma or the -X switch.
34 Trappable errors may be trapped using the eval operator. See "eval" in
36 perlfunc. In almost all cases, warnings may be selectively disabled or
37 promoted to fatal errors using the "warnings" pragma. See warnings.
38 The messages are in alphabetical order, without regard to upper or
40 lower-case. Some of these messages are generic. Spots that vary are
41 denoted with a %s or other printf-style escape. These escapes are
42 ignored by the alphabetical order, as are all characters other than
43 letters. To look up your message, just ignore anything that is not a
44 letter.
45 accept() on closed socket %s
47 (W closed) You tried to do an accept on a closed socket. Did you
48 forget to check the return value of your socket() call? See
49 "accept" in perlfunc.
50 Allocation too large: %x
52 (X) You can't allocate more than 64K on an MS-DOS machine.
53 '%c' allowed only after types %s
55 (F) The modifiers '!', '<' and '>' are allowed in pack() or
56 unpack() only after certain types. See "pack" in perlfunc.
57 Ambiguous call resolved as CORE::%s(), qualify as such or use &
59 (W ambiguous) A subroutine you have declared has the same name as a
60 Perl keyword, and you have used the name without qualification for
61 calling one or the other. Perl decided to call the builtin because
62 the subroutine is not imported.
63 To force interpretation as a subroutine call, either put an
65 ampersand before the subroutine name, or qualify the name with its
66 package. Alternatively, you can import the subroutine (or pretend
67 that it's imported with the "use subs" pragma).
68 To silently interpret it as the Perl operator, use the "CORE::"
70 prefix on the operator (e.g. "CORE::log($x)") or declare the
71 subroutine to be an object method (see "Subroutine Attributes" in
72 perlsub or attributes).
73 Ambiguous range in transliteration operator
75 (F) You wrote something like "tr/a-z-0//" which doesn't mean
76 anything at all. To include a "-" character in a transliteration,
77 put it either first or last. (In the past, "tr/a-z-0//" was
78 synonymous with "tr/a-y//", which was probably not what you would
79 have expected.)
80 Ambiguous use of %s resolved as %s
82 (W ambiguous)(S) You said something that may not be interpreted the
83 way you thought. Normally it's pretty easy to disambiguate it by
84 supplying a missing quote, operator, parenthesis pair or
85 declaration.
86 Ambiguous use of %c resolved as operator %c
88 (W ambiguous) "%", "&", and "*" are both infix operators (modulus,
89 bitwise and, and multiplication) and initial special characters
90 (denoting hashes, subroutines and typeglobs), and you said
91 something like "*foo * foo" that might be interpreted as either of
92 them. We assumed you meant the infix operator, but please try to
93 make it more clear -- in the example given, you might write "*foo *
94 foo()" if you really meant to multiply a glob by the result of
95 calling a function.
96 Ambiguous use of %c{%s} resolved to %c%s
98 (W ambiguous) You wrote something like "@{foo}", which might be
99 asking for the variable @foo, or it might be calling a function
100 named foo, and dereferencing it as an array reference. If you
101 wanted the variable, you can just write @foo. If you wanted to
102 call the function, write "@{foo()}" ... or you could just not have
103 a variable and a function with the same name, and save yourself a
104 lot of trouble.
105 Ambiguous use of %c{%s[...]} resolved to %c%s[...]
107 Ambiguous use of %c{%s{...}} resolved to %c%s{...}
108 (W ambiguous) You wrote something like "${foo[2]}" (where foo
109 represents the name of a Perl keyword), which might be looking for
110 element number 2 of the array named @foo, in which case please
111 write $foo[2], or you might have meant to pass an anonymous
112 arrayref to the function named foo, and then do a scalar deref on
113 the value it returns. If you meant that, write "${foo([2])}".
114 In regular expressions, the "${foo[2]}" syntax is sometimes
116 necessary to disambiguate between array subscripts and character
117 classes. "/$length[2345]/", for instance, will be interpreted as
118 $length followed by the character class "[2345]". If an array
119 subscript is what you want, you can avoid the warning by changing
120 "/${length[2345]}/" to the unsightly "/${\$length[2345]}/", by
121 renaming your array to something that does not coincide with a
122 built-in keyword, or by simply turning off warnings with "no
123 warnings 'ambiguous';".
124 Ambiguous use of -%s resolved as -&%s()
126 (W ambiguous) You wrote something like "-foo", which might be the
127 string "-foo", or a call to the function "foo", negated. If you
128 meant the string, just write "-foo". If you meant the function
129 call, write "-foo()".
130 Ambiguous use of 's//le...' resolved as 's// le...'; Rewrite as 's//el'
132 if you meant 'use locale rules and evaluate rhs as an expression'. In
133 Perl 5.18, it will be resolved the other way
134 (W deprecated, ambiguous) You wrote a pattern match with
135 substitution immediately followed by "le". In Perl 5.16 and
136 earlier, this is resolved as meaning to take the result of the
137 substitution, and see if it is stringwise less-than-or-equal-to
138 what follows in the expression. Having the "le" immediately
139 following a pattern is deprecated behavior, so in Perl 5.18, this
140 expression will be resolved as meaning to do the pattern match
141 using the rules of the current locale, and evaluate the rhs as an
142 expression when doing the substitution. In 5.14, and 5.16 if you
143 want the latter interpretation, you can simply write "el" instead.
144 But note that the "/l" modifier should not be used explicitly
145 anyway; you should use "use locale" instead. See perllocale.
146 '|' and '<' may not both be specified on command line
148 (F) An error peculiar to VMS. Perl does its own command line
149 redirection, and found that STDIN was a pipe, and that you also
150 tried to redirect STDIN using '<'. Only one STDIN stream to a
151 customer, please.
152 '|' and '>' may not both be specified on command line
154 (F) An error peculiar to VMS. Perl does its own command line
155 redirection, and thinks you tried to redirect stdout both to a file
156 and into a pipe to another command. You need to choose one or the
157 other, though nothing's stopping you from piping into a program or
158 Perl script which 'splits' output into two streams, such as
159 open(OUT,">$ARGV[0]") or die "Can't write to $ARGV[0]: $!";
161 while (<STDIN>) {
162 print;
163 print OUT;
164 }
165 close OUT;
166 Applying %s to %s will act on scalar(%s)
168 (W misc) The pattern match ("//"), substitution ("s///"), and
169 transliteration ("tr///") operators work on scalar values. If you
170 apply one of them to an array or a hash, it will convert the array
171 or hash to a scalar value (the length of an array, or the
172 population info of a hash) and then work on that scalar value.
173 This is probably not what you meant to do. See "grep" in perlfunc
174 and "map" in perlfunc for alternatives.
175 Arg too short for msgsnd
177 (F) msgsnd() requires a string at least as long as sizeof(long).
178 %s argument is not a HASH or ARRAY element or a subroutine
180 (F) The argument to exists() must be a hash or array element or a
181 subroutine with an ampersand, such as:
182 $foo{$bar}
184 $ref->{"susie"}[12]
185 &do_something
186 %s argument is not a HASH or ARRAY element or slice
188 (F) The argument to delete() must be either a hash or array
189 element, such as:
190 $foo{$bar}
192 $ref->{"susie"}[12]
193 or a hash or array slice, such as:
195 @foo[$bar, $baz, $xyzzy]
197 @{$ref->[12]}{"susie", "queue"}
198 %s argument is not a subroutine name
200 (F) The argument to exists() for "exists &sub" must be a subroutine
201 name, and not a subroutine call. "exists &sub()" will generate
202 this error.
203 Argument "%s" isn't numeric%s
205 (W numeric) The indicated string was fed as an argument to an
206 operator that expected a numeric value instead. If you're
207 fortunate the message will identify which operator was so
208 unfortunate.
209 Argument list not closed for PerlIO layer "%s"
211 (W layer) When pushing a layer with arguments onto the Perl I/O
212 system you forgot the ) that closes the argument list. (Layers
213 take care of transforming data between external and internal
214 representations.) Perl stopped parsing the layer list at this
215 point and did not attempt to push this layer. If your program
216 didn't explicitly request the failing operation, it may be the
217 result of the value of the environment variable PERLIO.
218 Array @%s missing the @ in argument %d of %s()
220 (D deprecated) Really old Perl let you omit the @ on array names in
221 some spots. This is now heavily deprecated.
222 assertion botched: %s
224 (X) The malloc package that comes with Perl had an internal
225 failure.
226 Assertion failed: file "%s"
228 (X) A general assertion failed. The file in question must be
229 examined.
230 Assigning non-zero to $[ is no longer possible
232 (F) When the "array_base" feature is disabled (e.g., under "use
233 v5.16;") the special variable $[, which is deprecated, is now a
234 fixed zero value.
235 Assignment to both a list and a scalar
237 (F) If you assign to a conditional operator, the 2nd and 3rd
238 arguments must either both be scalars or both be lists. Otherwise
239 Perl won't know which context to supply to the right side.
240 A thread exited while %d threads were running
242 (W threads)(S) When using threaded Perl, a thread (not necessarily
243 the main thread) exited while there were still other threads
244 running. Usually it's a good idea first to collect the return
245 values of the created threads by joining them, and only then to
246 exit from the main thread. See threads.
247 Attempt to access disallowed key '%s' in a restricted hash
249 (F) The failing code has attempted to get or set a key which is not
250 in the current set of allowed keys of a restricted hash.
251 Attempt to bless into a reference
253 (F) The CLASSNAME argument to the bless() operator is expected to
254 be the name of the package to bless the resulting object into.
255 You've supplied instead a reference to something: perhaps you wrote
256 bless $self, $proto;
258 when you intended
260 bless $self, ref($proto) || $proto;
262 If you actually want to bless into the stringified version of the
264 reference supplied, you need to stringify it yourself, for example
265 by:
266 bless $self, "$proto";
268 Attempt to clear deleted array
270 (S debugging) An array was assigned to when it was being freed.
271 Freed values are not supposed to be visible to Perl code. This can
272 also happen if XS code calls "av_clear" from a custom magic
273 callback on the array.
274 Attempt to delete disallowed key '%s' from a restricted hash
276 (F) The failing code attempted to delete from a restricted hash a
277 key which is not in its key set.
278 Attempt to delete readonly key '%s' from a restricted hash
280 (F) The failing code attempted to delete a key whose value has been
281 declared readonly from a restricted hash.
282 Attempt to free non-arena SV: 0x%x
284 (S internal) All SV objects are supposed to be allocated from
285 arenas that will be garbage collected on exit. An SV was
286 discovered to be outside any of those arenas.
287 Attempt to free nonexistent shared string '%s'%s
289 (S internal) Perl maintains a reference-counted internal table of
290 strings to optimize the storage and access of hash keys and other
291 strings. This indicates someone tried to decrement the reference
292 count of a string that can no longer be found in the table.
293 Attempt to free temp prematurely: SV 0x%x
295 (S debugging) Mortalized values are supposed to be freed by the
296 free_tmps() routine. This indicates that something else is freeing
297 the SV before the free_tmps() routine gets a chance, which means
298 that the free_tmps() routine will be freeing an unreferenced scalar
299 when it does try to free it.
300 Attempt to free unreferenced glob pointers
302 (S internal) The reference counts got screwed up on symbol aliases.
303 Attempt to free unreferenced scalar: SV 0x%x
305 (W internal) Perl went to decrement the reference count of a scalar
306 to see if it would go to 0, and discovered that it had already gone
307 to 0 earlier, and should have been freed, and in fact, probably was
308 freed. This could indicate that SvREFCNT_dec() was called too many
309 times, or that SvREFCNT_inc() was called too few times, or that the
310 SV was mortalized when it shouldn't have been, or that memory has
311 been corrupted.
312 Attempt to join self
314 (F) You tried to join a thread from within itself, which is an
315 impossible task. You may be joining the wrong thread, or you may
316 need to move the join() to some other thread.
317 Attempt to pack pointer to temporary value
319 (W pack) You tried to pass a temporary value (like the result of a
320 function, or a computed expression) to the "p" pack() template.
321 This means the result contains a pointer to a location that could
322 become invalid anytime, even before the end of the current
323 statement. Use literals or global values as arguments to the "p"
324 pack() template to avoid this warning.
325 Attempt to reload %s aborted.
327 (F) You tried to load a file with "use" or "require" that failed to
328 compile once already. Perl will not try to compile this file again
329 unless you delete its entry from %INC. See "require" in perlfunc
330 and "%INC" in perlvar.
331 Attempt to set length of freed array
333 (W) You tried to set the length of an array which has been freed.
334 You can do this by storing a reference to the scalar representing
335 the last index of an array and later assigning through that
336 reference. For example
337 $r = do {my @a; \$#a};
339 $$r = 503
340 Attempt to use reference as lvalue in substr
342 (W substr) You supplied a reference as the first argument to
343 substr() used as an lvalue, which is pretty strange. Perhaps you
344 forgot to dereference it first. See "substr" in perlfunc.
345 Attribute "locked" is deprecated
347 (D deprecated) You have used the attributes pragma to modify the
348 "locked" attribute on a code reference. The :locked attribute is
349 obsolete, has had no effect since 5005 threads were removed, and
350 will be removed in a future release of Perl 5.
351 Attribute "unique" is deprecated
353 (D deprecated) You have used the attributes pragma to modify the
354 "unique" attribute on an array, hash or scalar reference. The
355 :unique attribute has had no effect since Perl 5.8.8, and will be
356 removed in a future release of Perl 5.
357 av_reify called on tied array
359 (S debugging) This indicates that something went wrong and Perl got
360 very confused about @_ or @DB::args being tied.
361 Bad arg length for %s, is %u, should be %d
363 (F) You passed a buffer of the wrong size to one of msgctl(),
364 semctl() or shmctl(). In C parlance, the correct sizes are,
365 respectively, sizeof(struct msqid_ds *), sizeof(struct semid_ds *),
366 and sizeof(struct shmid_ds *).
367 Bad evalled substitution pattern
369 (F) You've used the "/e" switch to evaluate the replacement for a
370 substitution, but perl found a syntax error in the code to
371 evaluate, most likely an unexpected right brace '}'.
372 Bad filehandle: %s
374 (F) A symbol was passed to something wanting a filehandle, but the
375 symbol has no filehandle associated with it. Perhaps you didn't do
376 an open(), or did it in another package.
377 Bad free() ignored
379 (S malloc) An internal routine called free() on something that had
380 never been malloc()ed in the first place. Mandatory, but can be
381 disabled by setting environment variable "PERL_BADFREE" to 0.
382 This message can be seen quite often with DB_File on systems with
384 "hard" dynamic linking, like "AIX" and "OS/2". It is a bug of
385 "Berkeley DB" which is left unnoticed if "DB" uses forgiving system
386 malloc().
387 Bad hash
389 (P) One of the internal hash routines was passed a null HV pointer.
390 Badly placed ()'s
392 (A) You've accidentally run your script through csh instead of
393 Perl. Check the #! line, or manually feed your script into Perl
394 yourself.
395 Bad name after %s
397 (F) You started to name a symbol by using a package prefix, and
398 then didn't finish the symbol. In particular, you can't
399 interpolate outside of quotes, so
400 $var = 'myvar';
402 $sym = mypack::$var;
403 is not the same as
405 $var = 'myvar';
407 $sym = "mypack::$var";
408 Bad plugin affecting keyword '%s'
410 (F) An extension using the keyword plugin mechanism violated the
411 plugin API.
412 Bad realloc() ignored
414 (S malloc) An internal routine called realloc() on something that
415 had never been malloc()ed in the first place. Mandatory, but can
416 be disabled by setting the environment variable "PERL_BADFREE" to
417 1.
418 Bad symbol for array
420 (P) An internal request asked to add an array entry to something
421 that wasn't a symbol table entry.
422 Bad symbol for dirhandle
424 (P) An internal request asked to add a dirhandle entry to something
425 that wasn't a symbol table entry.
426 Bad symbol for filehandle
428 (P) An internal request asked to add a filehandle entry to
429 something that wasn't a symbol table entry.
430 Bad symbol for hash
432 (P) An internal request asked to add a hash entry to something that
433 wasn't a symbol table entry.
434 Bareword found in conditional
436 (W bareword) The compiler found a bareword where it expected a
437 conditional, which often indicates that an || or && was parsed as
438 part of the last argument of the previous construct, for example:
439 open FOO || die;
441 It may also indicate a misspelled constant that has been
443 interpreted as a bareword:
444 use constant TYPO => 1;
446 if (TYOP) { print "foo" }
447 The "strict" pragma is useful in avoiding such errors.
449 Bareword "%s" not allowed while "strict subs" in use
451 (F) With "strict subs" in use, a bareword is only allowed as a
452 subroutine identifier, in curly brackets or to the left of the "=>"
453 symbol. Perhaps you need to predeclare a subroutine?
454 Bareword "%s" refers to nonexistent package
456 (W bareword) You used a qualified bareword of the form "Foo::", but
457 the compiler saw no other uses of that namespace before that point.
458 Perhaps you need to predeclare a package?
459 BEGIN failed--compilation aborted
461 (F) An untrapped exception was raised while executing a BEGIN
462 subroutine. Compilation stops immediately and the interpreter is
463 exited.
464 BEGIN not safe after errors--compilation aborted
466 (F) Perl found a "BEGIN {}" subroutine (or a "use" directive, which
467 implies a "BEGIN {}") after one or more compilation errors had
468 already occurred. Since the intended environment for the "BEGIN
469 {}" could not be guaranteed (due to the errors), and since
470 subsequent code likely depends on its correct operation, Perl just
471 gave up.
472 \1 better written as $1
474 (W syntax) Outside of patterns, backreferences live on as
475 variables. The use of backslashes is grandfathered on the right-
476 hand side of a substitution, but stylistically it's better to use
477 the variable form because other Perl programmers will expect it,
478 and it works better if there are more than 9 backreferences.
479 Binary number > 0b11111111111111111111111111111111 non-portable
481 (W portable) The binary number you specified is larger than 2**32-1
482 (4294967295) and therefore non-portable between systems. See
483 perlport for more on portability concerns.
484 bind() on closed socket %s
486 (W closed) You tried to do a bind on a closed socket. Did you
487 forget to check the return value of your socket() call? See "bind"
488 in perlfunc.
489 binmode() on closed filehandle %s
491 (W unopened) You tried binmode() on a filehandle that was never
492 opened. Check your control flow and number of arguments.
493 "\b{" is deprecated; use "\b\{" instead
495 "\B{" is deprecated; use "\B\{" instead
496 (W deprecated, regexp) Use of an unescaped "{" immediately
497 following a "\b" or "\B" is now deprecated so as to reserve its use
498 for Perl itself in a future release.
499 Bit vector size > 32 non-portable
501 (W portable) Using bit vector sizes larger than 32 is non-portable.
502 Bizarre copy of %s
504 (P) Perl detected an attempt to copy an internal value that is not
505 copiable.
506 Buffer overflow in prime_env_iter: %s
508 (W internal) A warning peculiar to VMS. While Perl was preparing
509 to iterate over %ENV, it encountered a logical name or symbol
510 definition which was too long, so it was truncated to the string
511 shown.
512 Bizarre SvTYPE [%d]
514 (P) When starting a new thread or return values from a thread, Perl
515 encountered an invalid data type.
516 Callback called exit
518 (F) A subroutine invoked from an external package via call_sv()
519 exited by calling exit.
520 %s() called too early to check prototype
522 (W prototype) You've called a function that has a prototype before
523 the parser saw a definition or declaration for it, and Perl could
524 not check that the call conforms to the prototype. You need to
525 either add an early prototype declaration for the subroutine in
526 question, or move the subroutine definition ahead of the call to
527 get proper prototype checking. Alternatively, if you are certain
528 that you're calling the function correctly, you may put an
529 ampersand before the name to avoid the warning. See perlsub.
530 Cannot compress integer in pack
532 (F) An argument to pack("w",...) was too large to compress. The
533 BER compressed integer format can only be used with positive
534 integers, and you attempted to compress Infinity or a very large
535 number (> 1e308). See "pack" in perlfunc.
536 Cannot compress negative numbers in pack
538 (F) An argument to pack("w",...) was negative. The BER compressed
539 integer format can only be used with positive integers. See "pack"
540 in perlfunc.
541 Cannot convert a reference to %s to typeglob
543 (F) You manipulated Perl's symbol table directly, stored a
544 reference in it, then tried to access that symbol via conventional
545 Perl syntax. The access triggers Perl to autovivify that typeglob,
546 but it there is no legal conversion from that type of reference to
547 a typeglob.
548 Cannot copy to %s
550 (P) Perl detected an attempt to copy a value to an internal type
551 that cannot be directly assigned to.
552 Cannot find encoding "%s"
554 (S io) You tried to apply an encoding that did not exist to a
555 filehandle, either with open() or binmode().
556 Cannot set tied @DB::args
558 (F) "caller" tried to set @DB::args, but found it tied. Tying
559 @DB::args is not supported. (Before this error was added, it used
560 to crash.)
561 Cannot tie unreifiable array
563 (P) You somehow managed to call "tie" on an array that does not
564 keep a reference count on its arguments and cannot be made to do
565 so. Such arrays are not even supposed to be accessible to Perl
566 code, but are only used internally.
567 Can only compress unsigned integers in pack
569 (F) An argument to pack("w",...) was not an integer. The BER
570 compressed integer format can only be used with positive integers,
571 and you attempted to compress something else. See "pack" in
572 perlfunc.
573 Can't bless non-reference value
575 (F) Only hard references may be blessed. This is how Perl
576 "enforces" encapsulation of objects. See perlobj.
577 Can't "break" in a loop topicalizer
579 (F) You called "break", but you're in a "foreach" block rather than
580 a "given" block. You probably meant to use "next" or "last".
581 Can't "break" outside a given block
583 (F) You called "break", but you're not inside a "given" block.
584 Can't call method "%s" on an undefined value
586 (F) You used the syntax of a method call, but the slot filled by
587 the object reference or package name contains an undefined value.
588 Something like this will reproduce the error:
589 $BADREF = undef;
591 process $BADREF 1,2,3;
592 $BADREF->process(1,2,3);
593 Can't call method "%s" on unblessed reference
595 (F) A method call must know in what package it's supposed to run.
596 It ordinarily finds this out from the object reference you supply,
597 but you didn't supply an object reference in this case. A
598 reference isn't an object reference until it has been blessed. See
599 perlobj.
600 Can't call method "%s" without a package or object reference
602 (F) You used the syntax of a method call, but the slot filled by
603 the object reference or package name contains an expression that
604 returns a defined value which is neither an object reference nor a
605 package name. Something like this will reproduce the error:
606 $BADREF = 42;
608 process $BADREF 1,2,3;
609 $BADREF->process(1,2,3);
610 Can't chdir to %s
612 (F) You called "perl -x/foo/bar", but "/foo/bar" is not a directory
613 that you can chdir to, possibly because it doesn't exist.
614 Can't check filesystem of script "%s" for nosuid
616 (P) For some reason you can't check the filesystem of the script
617 for nosuid.
618 Can't coerce %s to %s in %s
620 (F) Certain types of SVs, in particular real symbol table entries
621 (typeglobs), can't be forced to stop being what they are. So you
622 can't say things like:
623 *foo += 1;
625 You CAN say
627 $foo = *foo;
629 $foo += 1;
630 but then $foo no longer contains a glob.
632 Can't "continue" outside a when block
634 (F) You called "continue", but you're not inside a "when" or
635 "default" block.
636 Can't create pipe mailbox
638 (P) An error peculiar to VMS. The process is suffering from
639 exhausted quotas or other plumbing problems.
640 Can't declare %s in "%s"
642 (F) Only scalar, array, and hash variables may be declared as "my",
643 "our" or "state" variables. They must have ordinary identifiers as
644 names.
645 Can't "default" outside a topicalizer
647 (F) You have used a "default" block that is neither inside a
648 "foreach" loop nor a "given" block. (Note that this error is
649 issued on exit from the "default" block, so you won't get the error
650 if you use an explicit "continue".)
651 Can't do inplace edit: %s is not a regular file
653 (S inplace) You tried to use the -i switch on a special file, such
654 as a file in /dev, or a FIFO. The file was ignored.
655 Can't do inplace edit on %s: %s
657 (S inplace) The creation of the new file failed for the indicated
658 reason.
659 Can't do inplace edit without backup
661 (F) You're on a system such as MS-DOS that gets confused if you try
662 reading from a deleted (but still opened) file. You have to say
663 "-i.bak", or some such.
664 Can't do inplace edit: %s would not be unique
666 (S inplace) Your filesystem does not support filenames longer than
667 14 characters and Perl was unable to create a unique filename
668 during inplace editing with the -i switch. The file was ignored.
669 Can't do {n,m} with n > m in regex; marked by <-- HERE in m/%s/
671 (F) Minima must be less than or equal to maxima. If you really
672 want your regexp to match something 0 times, just put {0}. The <--
673 HERE shows in the regular expression about where the problem was
674 discovered. See perlre.
675 Can't do waitpid with flags
677 (F) This machine doesn't have either waitpid() or wait4(), so only
678 waitpid() without flags is emulated.
679 Can't emulate -%s on #! line
681 (F) The #! line specifies a switch that doesn't make sense at this
682 point. For example, it'd be kind of silly to put a -x on the #!
683 line.
684 Can't %s %s-endian %ss on this platform
686 (F) Your platform's byte-order is neither big-endian nor little-
687 endian, or it has a very strange pointer size. Packing and
688 unpacking big- or little-endian floating point values and pointers
689 may not be possible. See "pack" in perlfunc.
690 Can't exec "%s": %s
692 (W exec) A system(), exec(), or piped open call could not execute
693 the named program for the indicated reason. Typical reasons
694 include: the permissions were wrong on the file, the file wasn't
695 found in $ENV{PATH}, the executable in question was compiled for
696 another architecture, or the #! line in a script points to an
697 interpreter that can't be run for similar reasons. (Or maybe your
698 system doesn't support #! at all.)
699 Can't exec %s
701 (F) Perl was trying to execute the indicated program for you
702 because that's what the #! line said. If that's not what you
703 wanted, you may need to mention "perl" on the #! line somewhere.
704 Can't execute %s
706 (F) You used the -S switch, but the copies of the script to execute
707 found in the PATH did not have correct permissions.
708 Can't find an opnumber for "%s"
710 (F) A string of a form "CORE::word" was given to prototype(), but
711 there is no builtin with the name "word".
712 Can't find %s character property "%s"
714 (F) You used "\p{}" or "\P{}" but the character property by that
715 name could not be found. Maybe you misspelled the name of the
716 property? See "Properties accessible through \p{} and \P{}" in
717 perluniprops for a complete list of available properties.
718 Can't find label %s
720 (F) You said to goto a label that isn't mentioned anywhere that
721 it's possible for us to go to. See "goto" in perlfunc.
722 Can't find %s on PATH
724 (F) You used the -S switch, but the script to execute could not be
725 found in the PATH.
726 Can't find %s on PATH, '.' not in PATH
728 (F) You used the -S switch, but the script to execute could not be
729 found in the PATH, or at least not with the correct permissions.
730 The script exists in the current directory, but PATH prohibits
731 running it.
732 Can't find string terminator %s anywhere before EOF
734 (F) Perl strings can stretch over multiple lines. This message
735 means that the closing delimiter was omitted. Because bracketed
736 quotes count nesting levels, the following is missing its final
737 parenthesis:
738 print q(The character '(' starts a side comment.);
740 If you're getting this error from a here-document, you may have
742 included unseen whitespace before or after your closing tag or
743 there may not be a linebreak after it. A good programmer's editor
744 will have a way to help you find these characters (or lack of
745 characters). See perlop for the full details on here-documents.
746 Can't find Unicode property definition "%s"
748 (F) You may have tried to use "\p" which means a Unicode property
749 (for example "\p{Lu}" matches all uppercase letters). If you did
750 mean to use a Unicode property, see "Properties accessible through
751 \p{} and \P{}" in perluniprops for a complete list of available
752 properties. If you didn't mean to use a Unicode property, escape
753 the "\p", either by "\\p" (just the "\p") or by "\Q\p" (the rest of
754 the string, or until "\E").
755 Can't fork: %s
757 (F) A fatal error occurred while trying to fork while opening a
758 pipeline.
759 Can't fork, trying again in 5 seconds
761 (W pipe) A fork in a piped open failed with EAGAIN and will be
762 retried after five seconds.
763 Can't get filespec - stale stat buffer?
765 (S) A warning peculiar to VMS. This arises because of the
766 difference between access checks under VMS and under the Unix model
767 Perl assumes. Under VMS, access checks are done by filename,
768 rather than by bits in the stat buffer, so that ACLs and other
769 protections can be taken into account. Unfortunately, Perl assumes
770 that the stat buffer contains all the necessary information, and
771 passes it, instead of the filespec, to the access-checking routine.
772 It will try to retrieve the filespec using the device name and FID
773 present in the stat buffer, but this works only if you haven't made
774 a subsequent call to the CRTL stat() routine, because the device
775 name is overwritten with each call. If this warning appears, the
776 name lookup failed, and the access-checking routine gave up and
777 returned FALSE, just to be conservative. (Note: The access-
778 checking routine knows about the Perl "stat" operator and file
779 tests, so you shouldn't ever see this warning in response to a Perl
780 command; it arises only if some internal code takes stat buffers
781 lightly.)
782 Can't get pipe mailbox device name
784 (P) An error peculiar to VMS. After creating a mailbox to act as a
785 pipe, Perl can't retrieve its name for later use.
786 Can't get SYSGEN parameter value for MAXBUF
788 (P) An error peculiar to VMS. Perl asked $GETSYI how big you want
789 your mailbox buffers to be, and didn't get an answer.
790 Can't "goto" into the middle of a foreach loop
792 (F) A "goto" statement was executed to jump into the middle of a
793 foreach loop. You can't get there from here. See "goto" in
794 perlfunc.
795 Can't "goto" out of a pseudo block
797 (F) A "goto" statement was executed to jump out of what might look
798 like a block, except that it isn't a proper block. This usually
799 occurs if you tried to jump out of a sort() block or subroutine,
800 which is a no-no. See "goto" in perlfunc.
801 Can't goto subroutine from a sort sub (or similar callback)
803 (F) The "goto subroutine" call can't be used to jump out of the
804 comparison sub for a sort(), or from a similar callback (such as
805 the reduce() function in List::Util).
806 Can't goto subroutine from an eval-%s
808 (F) The "goto subroutine" call can't be used to jump out of an eval
809 "string" or block.
810 Can't goto subroutine outside a subroutine
812 (F) The deeply magical "goto subroutine" call can only replace one
813 subroutine call for another. It can't manufacture one out of whole
814 cloth. In general you should be calling it out of only an AUTOLOAD
815 routine anyway. See "goto" in perlfunc.
816 Can't ignore signal CHLD, forcing to default
818 (W signal) Perl has detected that it is being run with the SIGCHLD
819 signal (sometimes known as SIGCLD) disabled. Since disabling this
820 signal will interfere with proper determination of exit status of
821 child processes, Perl has reset the signal to its default value.
822 This situation typically indicates that the parent program under
823 which Perl may be running (e.g. cron) is being very careless.
824 Can't kill a non-numeric process ID
826 (F) Process identifiers must be (signed) integers. It is a fatal
827 error to attempt to kill() an undefined, empty-string or otherwise
828 non-numeric process identifier.
829 Can't "last" outside a loop block
831 (F) A "last" statement was executed to break out of the current
832 block, except that there's this itty bitty problem called there
833 isn't a current block. Note that an "if" or "else" block doesn't
834 count as a "loopish" block, as doesn't a block given to sort(),
835 map() or grep(). You can usually double the curlies to get the
836 same effect though, because the inner curlies will be considered a
837 block that loops once. See "last" in perlfunc.
838 Can't linearize anonymous symbol table
840 (F) Perl tried to calculate the method resolution order (MRO) of a
841 package, but failed because the package stash has no name.
842 Can't load '%s' for module %s
844 (F) The module you tried to load failed to load a dynamic
845 extension. This may either mean that you upgraded your version of
846 perl to one that is incompatible with your old dynamic extensions
847 (which is known to happen between major versions of perl), or (more
848 likely) that your dynamic extension was built against an older
849 version of the library that is installed on your system. You may
850 need to rebuild your old dynamic extensions.
851 Can't localize lexical variable %s
853 (F) You used local on a variable name that was previously declared
854 as a lexical variable using "my" or "state". This is not allowed.
855 If you want to localize a package variable of the same name,
856 qualify it with the package name.
857 Can't localize through a reference
859 (F) You said something like "local $$ref", which Perl can't
860 currently handle, because when it goes to restore the old value of
861 whatever $ref pointed to after the scope of the local() is
862 finished, it can't be sure that $ref will still be a reference.
863 Can't locate %s
865 (F) You said to "do" (or "require", or "use") a file that couldn't
866 be found. Perl looks for the file in all the locations mentioned
867 in @INC, unless the file name included the full path to the file.
868 Perhaps you need to set the PERL5LIB or PERL5OPT environment
869 variable to say where the extra library is, or maybe the script
870 needs to add the library name to @INC. Or maybe you just
871 misspelled the name of the file. See "require" in perlfunc and
872 lib.
873 Can't locate auto/%s.al in @INC
875 (F) A function (or method) was called in a package which allows
876 autoload, but there is no function to autoload. Most probable
877 causes are a misprint in a function/method name or a failure to
878 "AutoSplit" the file, say, by doing "make install".
879 Can't locate loadable object for module %s in @INC
881 (F) The module you loaded is trying to load an external library,
882 like for example, foo.so or bar.dll, but the DynaLoader module was
883 unable to locate this library. See DynaLoader.
884 Can't locate object method "%s" via package "%s"
886 (F) You called a method correctly, and it correctly indicated a
887 package functioning as a class, but that package doesn't define
888 that particular method, nor does any of its base classes. See
889 perlobj.
890 Can't locate package %s for @%s::ISA
892 (W syntax) The @ISA array contained the name of another package
893 that doesn't seem to exist.
894 Can't locate PerlIO%s
896 (F) You tried to use in open() a PerlIO layer that does not exist,
897 e.g. open(FH, ">:nosuchlayer", "somefile").
898 Can't make list assignment to %ENV on this system
900 (F) List assignment to %ENV is not supported on some systems,
901 notably VMS.
902 Can't modify %s in %s
904 (F) You aren't allowed to assign to the item indicated, or
905 otherwise try to change it, such as with an auto-increment.
906 Can't modify nonexistent substring
908 (P) The internal routine that does assignment to a substr() was
909 handed a NULL.
910 Can't modify non-lvalue subroutine call
912 (F) Subroutines meant to be used in lvalue context should be
913 declared as such. See "Lvalue subroutines" in perlsub.
914 Can't msgrcv to read-only var
916 (F) The target of a msgrcv must be modifiable to be used as a
917 receive buffer.
918 Can't "next" outside a loop block
920 (F) A "next" statement was executed to reiterate the current block,
921 but there isn't a current block. Note that an "if" or "else" block
922 doesn't count as a "loopish" block, as doesn't a block given to
923 sort(), map() or grep(). You can usually double the curlies to get
924 the same effect though, because the inner curlies will be
925 considered a block that loops once. See "next" in perlfunc.
926 Can't open %s
928 (F) You tried to run a perl built with MAD support with the
929 PERL_XMLDUMP environment variable set, but the file named by that
930 variable could not be opened.
931 Can't open %s: %s
933 (S inplace) The implicit opening of a file through use of the "<>"
934 filehandle, either implicitly under the "-n" or "-p" command-line
935 switches, or explicitly, failed for the indicated reason. Usually
936 this is because you don't have read permission for a file which you
937 named on the command line.
938 (F) You tried to call perl with the -e switch, but /dev/null (or
940 your operating system's equivalent) could not be opened.
941 Can't open a reference
943 (W io) You tried to open a scalar reference for reading or writing,
944 using the 3-arg open() syntax:
945 open FH, '>', $ref;
947 but your version of perl is compiled without perlio, and this form
949 of open is not supported.
950 Can't open bidirectional pipe
952 (W pipe) You tried to say "open(CMD, "|cmd|")", which is not
953 supported. You can try any of several modules in the Perl library
954 to do this, such as IPC::Open2. Alternately, direct the pipe's
955 output to a file using ">", and then read it in under a different
956 file handle.
957 Can't open error file %s as stderr
959 (F) An error peculiar to VMS. Perl does its own command line
960 redirection, and couldn't open the file specified after '2>' or
961 '2>>' on the command line for writing.
962 Can't open input file %s as stdin
964 (F) An error peculiar to VMS. Perl does its own command line
965 redirection, and couldn't open the file specified after '<' on the
966 command line for reading.
967 Can't open output file %s as stdout
969 (F) An error peculiar to VMS. Perl does its own command line
970 redirection, and couldn't open the file specified after '>' or '>>'
971 on the command line for writing.
972 Can't open output pipe (name: %s)
974 (P) An error peculiar to VMS. Perl does its own command line
975 redirection, and couldn't open the pipe into which to send data
976 destined for stdout.
977 Can't open perl script "%s": %s
979 (F) The script you specified can't be opened for the indicated
980 reason.
981 If you're debugging a script that uses #!, and normally relies on
983 the shell's $PATH search, the -S option causes perl to do that
984 search, so you don't have to type the path or "`which
985 $scriptname`".
986 Can't read CRTL environ
988 (S) A warning peculiar to VMS. Perl tried to read an element of
989 %ENV from the CRTL's internal environment array and discovered the
990 array was missing. You need to figure out where your CRTL
991 misplaced its environ or define PERL_ENV_TABLES (see perlvms) so
992 that environ is not searched.
993 Can't "redo" outside a loop block
995 (F) A "redo" statement was executed to restart the current block,
996 but there isn't a current block. Note that an "if" or "else" block
997 doesn't count as a "loopish" block, as doesn't a block given to
998 sort(), map() or grep(). You can usually double the curlies to get
999 the same effect though, because the inner curlies will be
1000 considered a block that loops once. See "redo" in perlfunc.
1001 Can't remove %s: %s, skipping file
1003 (S inplace) You requested an inplace edit without creating a backup
1004 file. Perl was unable to remove the original file to replace it
1005 with the modified file. The file was left unmodified.
1006 Can't rename %s to %s: %s, skipping file
1008 (S inplace) The rename done by the -i switch failed for some
1009 reason, probably because you don't have write permission to the
1010 directory.
1011 Can't reopen input pipe (name: %s) in binary mode
1013 (P) An error peculiar to VMS. Perl thought stdin was a pipe, and
1014 tried to reopen it to accept binary data. Alas, it failed.
1015 Can't reset %ENV on this system
1017 (F) You called "reset('E')" or similar, which tried to reset all
1018 variables in the current package beginning with "E". In the main
1019 package, that includes %ENV. Resetting %ENV is not supported on
1020 some systems, notably VMS.
1021 Can't resolve method "%s" overloading "%s" in package "%s"
1023 (F)(P) Error resolving overloading specified by a method name (as
1024 opposed to a subroutine reference): no such method callable via the
1025 package. If the method name is "???", this is an internal error.
1026 Can't return %s from lvalue subroutine
1028 (F) Perl detected an attempt to return illegal lvalues (such as
1029 temporary or readonly values) from a subroutine used as an lvalue.
1030 This is not allowed.
1031 Can't return outside a subroutine
1033 (F) The return statement was executed in mainline code, that is,
1034 where there was no subroutine call to return out of. See perlsub.
1035 Can't return %s to lvalue scalar context
1037 (F) You tried to return a complete array or hash from an lvalue
1038 subroutine, but you called the subroutine in a way that made Perl
1039 think you meant to return only one value. You probably meant to
1040 write parentheses around the call to the subroutine, which tell
1041 Perl that the call should be in list context.
1042 Can't stat script "%s"
1044 (P) For some reason you can't fstat() the script even though you
1045 have it open already. Bizarre.
1046 Can't take log of %g
1048 (F) For ordinary real numbers, you can't take the logarithm of a
1049 negative number or zero. There's a Math::Complex package that
1050 comes standard with Perl, though, if you really want to do that for
1051 the negative numbers.
1052 Can't take sqrt of %g
1054 (F) For ordinary real numbers, you can't take the square root of a
1055 negative number. There's a Math::Complex package that comes
1056 standard with Perl, though, if you really want to do that.
1057 Can't undef active subroutine
1059 (F) You can't undefine a routine that's currently running. You
1060 can, however, redefine it while it's running, and you can even
1061 undef the redefined subroutine while the old routine is running.
1062 Go figure.
1063 Can't upgrade %s (%d) to %d
1065 (P) The internal sv_upgrade routine adds "members" to an SV, making
1066 it into a more specialized kind of SV. The top several SV types
1067 are so specialized, however, that they cannot be interconverted.
1068 This message indicates that such a conversion was attempted.
1069 Can't use '%c' after -mname
1071 (F) You tried to call perl with the -m switch, but you put
1072 something other than "=" after the module name.
1073 Can't use anonymous symbol table for method lookup
1075 (F) The internal routine that does method lookup was handed a
1076 symbol table that doesn't have a name. Symbol tables can become
1077 anonymous for example by undefining stashes: "undef
1078 %Some::Package::".
1079 Can't use an undefined value as %s reference
1081 (F) A value used as either a hard reference or a symbolic reference
1082 must be a defined value. This helps to delurk some insidious
1083 errors.
1084 Can't use bareword ("%s") as %s ref while "strict refs" in use
1086 (F) Only hard references are allowed by "strict refs". Symbolic
1087 references are disallowed. See perlref.
1088 Can't use %! because Errno.pm is not available
1090 (F) The first time the "%!" hash is used, perl automatically loads
1091 the Errno.pm module. The Errno module is expected to tie the %!
1092 hash to provide symbolic names for $! errno values.
1093 Can't use both '<' and '>' after type '%c' in %s
1095 (F) A type cannot be forced to have both big-endian and little-
1096 endian byte-order at the same time, so this combination of
1097 modifiers is not allowed. See "pack" in perlfunc.
1098 Can't use %s for loop variable
1100 (F) Only a simple scalar variable may be used as a loop variable on
1101 a foreach.
1102 Can't use global %s in "%s"
1104 (F) You tried to declare a magical variable as a lexical variable.
1105 This is not allowed, because the magic can be tied to only one
1106 location (namely the global variable) and it would be incredibly
1107 confusing to have variables in your program that looked like
1108 magical variables but weren't.
1109 Can't use '%c' in a group with different byte-order in %s
1111 (F) You attempted to force a different byte-order on a type that is
1112 already inside a group with a byte-order modifier. For example you
1113 cannot force little-endianness on a type that is inside a big-
1114 endian group.
1115 Can't use "my %s" in sort comparison
1117 (F) The global variables $a and $b are reserved for sort
1118 comparisons. You mentioned $a or $b in the same line as the <=> or
1119 cmp operator, and the variable had earlier been declared as a
1120 lexical variable. Either qualify the sort variable with the
1121 package name, or rename the lexical variable.
1122 Can't use %s ref as %s ref
1124 (F) You've mixed up your reference types. You have to dereference
1125 a reference of the type needed. You can use the ref() function to
1126 test the type of the reference, if need be.
1127 Can't use string ("%s") as %s ref while "strict refs" in use
1129 (F) Only hard references are allowed by "strict refs". Symbolic
1130 references are disallowed. See perlref.
1131 Can't use subscript on %s
1133 (F) The compiler tried to interpret a bracketed expression as a
1134 subscript. But to the left of the brackets was an expression that
1135 didn't look like a hash or array reference, or anything else
1136 subscriptable.
1137 Can't use \%c to mean $%c in expression
1139 (W syntax) In an ordinary expression, backslash is a unary operator
1140 that creates a reference to its argument. The use of backslash to
1141 indicate a backreference to a matched substring is valid only as
1142 part of a regular expression pattern. Trying to do this in
1143 ordinary Perl code produces a value that prints out looking like
1144 SCALAR(0xdecaf). Use the $1 form instead.
1145 Can't weaken a nonreference
1147 (F) You attempted to weaken something that was not a reference.
1148 Only references can be weakened.
1149 Can't "when" outside a topicalizer
1151 (F) You have used a when() block that is neither inside a "foreach"
1152 loop nor a "given" block. (Note that this error is issued on exit
1153 from the "when" block, so you won't get the error if the match
1154 fails, or if you use an explicit "continue".)
1155 Can't x= to read-only value
1157 (F) You tried to repeat a constant value (often the undefined
1158 value) with an assignment operator, which implies modifying the
1159 value itself. Perhaps you need to copy the value to a temporary,
1160 and repeat that.
1161 Character following "\c" must be ASCII
1163 (F)(W deprecated, syntax) In "\cX", X must be an ASCII character.
1164 It is planned to make this fatal in all instances in Perl 5.18. In
1165 the cases where it isn't fatal, the character this evaluates to is
1166 derived by exclusive or'ing the code point of this character with
1167 0x40.
1168 Note that non-alphabetic ASCII characters are discouraged here as
1170 well.
1171 Character in 'C' format wrapped in pack
1173 (W pack) You said
1174 pack("C", $x)
1176 where $x is either less than 0 or more than 255; the "C" format is
1178 only for encoding native operating system characters (ASCII,
1179 EBCDIC, and so on) and not for Unicode characters, so Perl behaved
1180 as if you meant
1181 pack("C", $x & 255)
1183 If you actually want to pack Unicode codepoints, use the "U" format
1185 instead.
1186 Character in 'W' format wrapped in pack
1188 (W pack) You said
1189 pack("U0W", $x)
1191 where $x is either less than 0 or more than 255. However,
1193 "U0"-mode expects all values to fall in the interval [0, 255], so
1194 Perl behaved as if you meant:
1195 pack("U0W", $x & 255)
1197 Character in 'c' format wrapped in pack
1199 (W pack) You said
1200 pack("c", $x)
1202 where $x is either less than -128 or more than 127; the "c" format
1204 is only for encoding native operating system characters (ASCII,
1205 EBCDIC, and so on) and not for Unicode characters, so Perl behaved
1206 as if you meant
1207 pack("c", $x & 255);
1209 If you actually want to pack Unicode codepoints, use the "U" format
1211 instead.
1212 Character in '%c' format wrapped in unpack
1214 (W unpack) You tried something like
1215 unpack("H", "\x{2a1}")
1217 where the format expects to process a byte (a character with a
1219 value below 256), but a higher value was provided instead. Perl
1220 uses the value modulus 256 instead, as if you had provided:
1221 unpack("H", "\x{a1}")
1223 Character(s) in '%c' format wrapped in pack
1225 (W pack) You tried something like
1226 pack("u", "\x{1f3}b")
1228 where the format expects to process a sequence of bytes (character
1230 with a value below 256), but some of the characters had a higher
1231 value. Perl uses the character values modulus 256 instead, as if
1232 you had provided:
1233 pack("u", "\x{f3}b")
1235 Character(s) in '%c' format wrapped in unpack
1237 (W unpack) You tried something like
1238 unpack("s", "\x{1f3}b")
1240 where the format expects to process a sequence of bytes (character
1242 with a value below 256), but some of the characters had a higher
1243 value. Perl uses the character values modulus 256 instead, as if
1244 you had provided:
1245 unpack("s", "\x{f3}b")
1247 "\c{" is deprecated and is more clearly written as ";"
1249 (D deprecated, syntax) The "\cX" construct is intended to be a way
1250 to specify non-printable characters. You used it with a "{" which
1251 evaluates to ";", which is printable. It is planned to remove the
1252 ability to specify a semi-colon this way in Perl 5.18. Just use a
1253 semi-colon or a backslash-semi-colon without the "\c".
1254 "\c%c" is more clearly written simply as "%s"
1256 (W syntax) The "\cX" construct is intended to be a way to specify
1257 non-printable characters. You used it for a printable one, which
1258 is better written as simply itself, perhaps preceded by a backslash
1259 for non-word characters.
1260 Cloning substitution context is unimplemented
1262 (F) Creating a new thread inside the "s///" operator is not
1263 supported.
1264 close() on unopened filehandle %s
1266 (W unopened) You tried to close a filehandle that was never opened.
1267 closedir() attempted on invalid dirhandle %s
1269 (W io) The dirhandle you tried to close is either closed or not
1270 really a dirhandle. Check your control flow.
1271 Closure prototype called
1273 (F) If a closure has attributes, the subroutine passed to an
1274 attribute handler is the prototype that is cloned when a new
1275 closure is created. This subroutine cannot be called.
1276 Code missing after '/'
1278 (F) You had a (sub-)template that ends with a '/'. There must be
1279 another template code following the slash. See "pack" in perlfunc.
1280 Code point 0x%X is not Unicode, may not be portable
1282 Code point 0x%X is not Unicode, all \p{} matches fail; all \P{} matches
1283 succeed
1284 (W utf8, non_unicode) You had a code point above the Unicode
1285 maximum of U+10FFFF.
1286 Perl allows strings to contain a superset of Unicode code points,
1288 up to the limit of what is storable in an unsigned integer on your
1289 system, but these may not be accepted by other languages/systems.
1290 At one time, it was legal in some standards to have code points up
1291 to 0x7FFF_FFFF, but not higher. Code points above 0xFFFF_FFFF
1292 require larger than a 32 bit word.
1293 None of the Unicode or Perl-defined properties will match a non-
1295 Unicode code point. For example,
1296 chr(0x7FF_FFFF) =~ /\p{Any}/
1298 will not match, because the code point is not in Unicode. But
1300 chr(0x7FF_FFFF) =~ /\P{Any}/
1302 will match.
1304 This may be counterintuitive at times, as both these fail:
1306 chr(0x110000) =~ \p{ASCII_Hex_Digit=True} # Fails.
1308 chr(0x110000) =~ \p{ASCII_Hex_Digit=False} # Also fails!
1309 and both these succeed:
1311 chr(0x110000) =~ \P{ASCII_Hex_Digit=True} # Succeeds.
1313 chr(0x110000) =~ \P{ASCII_Hex_Digit=False} # Also succeeds!
1314 %s: Command not found
1316 (A) You've accidentally run your script through csh or another
1317 shell shell instead of Perl. Check the #! line, or manually feed
1318 your script into Perl yourself. The #! line at the top of your
1319 file could look like
1320 #!/usr/bin/perl -w
1322 Compilation failed in require
1324 (F) Perl could not compile a file specified in a "require"
1325 statement. Perl uses this generic message when none of the errors
1326 that it encountered were severe enough to halt compilation
1327 immediately.
1328 Complex regular subexpression recursion limit (%d) exceeded
1330 (W regexp) The regular expression engine uses recursion in complex
1331 situations where back-tracking is required. Recursion depth is
1332 limited to 32766, or perhaps less in architectures where the stack
1333 cannot grow arbitrarily. ("Simple" and "medium" situations are
1334 handled without recursion and are not subject to a limit.) Try
1335 shortening the string under examination; looping in Perl code (e.g.
1336 with "while") rather than in the regular expression engine; or
1337 rewriting the regular expression so that it is simpler or
1338 backtracks less. (See perlfaq2 for information on Mastering
1339 Regular Expressions.)
1340 cond_broadcast() called on unlocked variable
1342 (W threads) Within a thread-enabled program, you tried to call
1343 cond_broadcast() on a variable which wasn't locked. The
1344 cond_broadcast() function is used to wake up another thread that is
1345 waiting in a cond_wait(). To ensure that the signal isn't sent
1346 before the other thread has a chance to enter the wait, it is usual
1347 for the signaling thread first to wait for a lock on variable.
1348 This lock attempt will only succeed after the other thread has
1349 entered cond_wait() and thus relinquished the lock.
1350 cond_signal() called on unlocked variable
1352 (W threads) Within a thread-enabled program, you tried to call
1353 cond_signal() on a variable which wasn't locked. The cond_signal()
1354 function is used to wake up another thread that is waiting in a
1355 cond_wait(). To ensure that the signal isn't sent before the other
1356 thread has a chance to enter the wait, it is usual for the
1357 signaling thread first to wait for a lock on variable. This lock
1358 attempt will only succeed after the other thread has entered
1359 cond_wait() and thus relinquished the lock.
1360 connect() on closed socket %s
1362 (W closed) You tried to do a connect on a closed socket. Did you
1363 forget to check the return value of your socket() call? See
1364 "connect" in perlfunc.
1365 Constant(%s)%s: %s
1367 (F) The parser found inconsistencies either while attempting to
1368 define an overloaded constant, or when trying to find the character
1369 name specified in the "\N{...}" escape. Perhaps you forgot to load
1370 the corresponding overload pragma?.
1371 Constant(%s)%s: %s in regex; marked by <-- HERE in m/%s/
1373 (F) The parser found inconsistencies while attempting to find the
1374 character name specified in the "\N{...}" escape.
1375 Constant is not %s reference
1377 (F) A constant value (perhaps declared using the "use constant"
1378 pragma) is being dereferenced, but it amounts to the wrong type of
1379 reference. The message indicates the type of reference that was
1380 expected. This usually indicates a syntax error in dereferencing
1381 the constant value. See "Constant Functions" in perlsub and
1382 constant.
1383 Constant subroutine %s redefined
1385 (W redefine)(S) You redefined a subroutine which had previously
1386 been eligible for inlining. See "Constant Functions" in perlsub
1387 for commentary and workarounds.
1388 Constant subroutine %s undefined
1390 (W misc) You undefined a subroutine which had previously been
1391 eligible for inlining. See "Constant Functions" in perlsub for
1392 commentary and workarounds.
1393 Copy method did not return a reference
1395 (F) The method which overloads "=" is buggy. See "Copy
1396 Constructor" in overload.
1397 &CORE::%s cannot be called directly
1399 (F) You tried to call a subroutine in the "CORE::" namespace with
1400 &foo syntax or through a reference. Some subroutines in this
1401 package cannot yet be called that way, but must be called as
1402 barewords. Something like this will work:
1403 BEGIN { *shove = \&CORE::push; }
1405 shove @array, 1,2,3; # pushes on to @array
1406 CORE::%s is not a keyword
1408 (F) The CORE:: namespace is reserved for Perl keywords.
1409 corrupted regexp pointers
1411 (P) The regular expression engine got confused by what the regular
1412 expression compiler gave it.
1413 corrupted regexp program
1415 (P) The regular expression engine got passed a regexp program
1416 without a valid magic number.
1417 Corrupt malloc ptr 0x%x at 0x%x
1419 (P) The malloc package that comes with Perl had an internal
1420 failure.
1421 Count after length/code in unpack
1423 (F) You had an unpack template indicating a counted-length string,
1424 but you have also specified an explicit size for the string. See
1425 "pack" in perlfunc.
1426 Deep recursion on anonymous subroutine
1428 Deep recursion on subroutine "%s"
1429 (W recursion) This subroutine has called itself (directly or
1430 indirectly) 100 times more than it has returned. This probably
1431 indicates an infinite recursion, unless you're writing strange
1432 benchmark programs, in which case it indicates something else.
1433 This threshold can be changed from 100, by recompiling the perl
1435 binary, setting the C pre-processor macro "PERL_SUB_DEPTH_WARN" to
1436 the desired value.
1437 defined(@array) is deprecated
1439 (D deprecated) defined() is not usually useful on arrays because it
1440 checks for an undefined scalar value. If you want to see if the
1441 array is empty, just use "if (@array) { # not empty }" for example.
1442 defined(%hash) is deprecated
1444 (D deprecated) "defined()" is not usually right on hashes and has
1445 been discouraged since 5.004.
1446 Although "defined %hash" is false on a plain not-yet-used hash, it
1448 becomes true in several non-obvious circumstances, including
1449 iterators, weak references, stash names, even remaining true after
1450 "undef %hash". These things make "defined %hash" fairly useless in
1451 practice.
1452 If a check for non-empty is what you wanted then just put it in
1454 boolean context (see "Scalar values" in perldata):
1455 if (%hash) {
1457 # not empty
1458 }
1459 If you had "defined %Foo::Bar::QUUX" to check whether such a
1461 package variable exists then that's never really been reliable, and
1462 isn't a good way to enquire about the features of a package, or
1463 whether it's loaded, etc.
1464 (?(DEFINE)....) does not allow branches in regex; marked by <-- HERE in
1466 m/%s/
1467 (F) You used something like "(?(DEFINE)...|..)" which is illegal.
1468 The most likely cause of this error is that you left out a
1469 parenthesis inside of the "...." part.
1470 The <-- HERE shows in the regular expression about where the
1472 problem was discovered.
1473 %s defines neither package nor VERSION--version check failed
1475 (F) You said something like "use Module 42" but in the Module file
1476 there are neither package declarations nor a $VERSION.
1477 Delimiter for here document is too long
1479 (F) In a here document construct like "<<FOO", the label "FOO" is
1480 too long for Perl to handle. You have to be seriously twisted to
1481 write code that triggers this error.
1482 Deprecated character in \N{...}; marked by <-- HERE in \N{%s<-- HERE
1484 %s
1485 (D deprecated) Just about anything is legal for the "..." in
1486 "\N{...}". But starting in 5.12, non-reasonable ones that don't
1487 look like names are deprecated. A reasonable name begins with an
1488 alphabetic character and continues with any combination of
1489 alphanumerics, dashes, spaces, parentheses or colons.
1490 Deprecated use of my() in false conditional
1492 (D deprecated) You used a declaration similar to "my $x if 0".
1493 There has been a long-standing bug in Perl that causes a lexical
1494 variable not to be cleared at scope exit when its declaration
1495 includes a false conditional. Some people have exploited this bug
1496 to achieve a kind of static variable. Since we intend to fix this
1497 bug, we don't want people relying on this behavior. You can
1498 achieve a similar static effect by declaring the variable in a
1499 separate block outside the function, eg
1500 sub f { my $x if 0; return $x++ }
1502 becomes
1504 { my $x; sub f { return $x++ } }
1506 Beginning with perl 5.9.4, you can also use "state" variables to
1508 have lexicals that are initialized only once (see feature):
1509 sub f { state $x; return $x++ }
1511 DESTROY created new reference to dead object '%s'
1513 (F) A DESTROY() method created a new reference to the object which
1514 is just being DESTROYed. Perl is confused, and prefers to abort
1515 rather than to create a dangling reference.
1516 Did not produce a valid header
1518 See Server error.
1519 %s did not return a true value
1521 (F) A required (or used) file must return a true value to indicate
1522 that it compiled correctly and ran its initialization code
1523 correctly. It's traditional to end such a file with a "1;", though
1524 any true value would do. See "require" in perlfunc.
1525 (Did you mean &%s instead?)
1527 (W misc) You probably referred to an imported subroutine &FOO as
1528 $FOO or some such.
1529 (Did you mean "local" instead of "our"?)
1531 (W misc) Remember that "our" does not localize the declared global
1532 variable. You have declared it again in the same lexical scope,
1533 which seems superfluous.
1534 (Did you mean $ or @ instead of %?)
1536 (W) You probably said %hash{$key} when you meant $hash{$key} or
1537 @hash{@keys}. On the other hand, maybe you just meant %hash and
1538 got carried away.
1539 Died
1541 (F) You passed die() an empty string (the equivalent of "die """)
1542 or you called it with no args and $@ was empty.
1543 Document contains no data
1545 See Server error.
1546 %s does not define %s::VERSION--version check failed
1548 (F) You said something like "use Module 42" but the Module did not
1549 define a "$VERSION."
1550 '/' does not take a repeat count
1552 (F) You cannot put a repeat count of any kind right after the '/'
1553 code. See "pack" in perlfunc.
1554 Don't know how to handle magic of type '%s'
1556 (P) The internal handling of magical variables has been cursed.
1557 do_study: out of memory
1559 (P) This should have been caught by safemalloc() instead.
1560 (Do you need to predeclare %s?)
1562 (S syntax) This is an educated guess made in conjunction with the
1563 message "%s found where operator expected". It often means a
1564 subroutine or module name is being referenced that hasn't been
1565 declared yet. This may be because of ordering problems in your
1566 file, or because of a missing "sub", "package", "require", or "use"
1567 statement. If you're referencing something that isn't defined yet,
1568 you don't actually have to define the subroutine or package before
1569 the current location. You can use an empty "sub foo;" or "package
1570 FOO;" to enter a "forward" declaration.
1571 dump() better written as CORE::dump()
1573 (W misc) You used the obsolescent "dump()" built-in function,
1574 without fully qualifying it as "CORE::dump()". Maybe it's a typo.
1575 See "dump" in perlfunc.
1576 dump is not supported
1578 (F) Your machine doesn't support dump/undump.
1579 Duplicate free() ignored
1581 (S malloc) An internal routine called free() on something that had
1582 already been freed.
1583 Duplicate modifier '%c' after '%c' in %s
1585 (W) You have applied the same modifier more than once after a type
1586 in a pack template. See "pack" in perlfunc.
1587 elseif should be elsif
1589 (S syntax) There is no keyword "elseif" in Perl because Larry
1590 thinks it's ugly. Your code will be interpreted as an attempt to
1591 call a method named "elseif" for the class returned by the
1592 following block. This is unlikely to be what you want.
1593 Empty %s
1595 (F) "\p" and "\P" are used to introduce a named Unicode property,
1596 as described in perlunicode and perlre. You used "\p" or "\P" in a
1597 regular expression without specifying the property name.
1598 entering effective %s failed
1600 (F) While under the "use filetest" pragma, switching the real and
1601 effective uids or gids failed.
1602 %ENV is aliased to %s
1604 (F) You're running under taint mode, and the %ENV variable has been
1605 aliased to another hash, so it doesn't reflect anymore the state of
1606 the program's environment. This is potentially insecure.
1607 Error converting file specification %s
1609 (F) An error peculiar to VMS. Because Perl may have to deal with
1610 file specifications in either VMS or Unix syntax, it converts them
1611 to a single form when it must operate on them directly. Either
1612 you've passed an invalid file specification to Perl, or you've
1613 found a case the conversion routines don't handle. Drat.
1614 %s: Eval-group in insecure regular expression
1616 (F) Perl detected tainted data when trying to compile a regular
1617 expression that contains the "(?{ ... })" zero-width assertion,
1618 which is unsafe. See "(?{ code })" in perlre, and perlsec.
1619 %s: Eval-group not allowed at runtime, use re 'eval'
1621 (F) Perl tried to compile a regular expression containing the "(?{
1622 ... })" zero-width assertion at run time, as it would when the
1623 pattern contains interpolated values. Since that is a security
1624 risk, it is not allowed. If you insist, you may still do this by
1625 using the "re 'eval'" pragma or by explicitly building the pattern
1626 from an interpolated string at run time and using that in an
1627 eval(). See "(?{ code })" in perlre.
1628 %s: Eval-group not allowed, use re 'eval'
1630 (F) A regular expression contained the "(?{ ... })" zero-width
1631 assertion, but that construct is only allowed when the "use re
1632 'eval'" pragma is in effect. See "(?{ code })" in perlre.
1633 EVAL without pos change exceeded limit in regex; marked by <-- HERE in
1635 m/%s/
1636 (F) You used a pattern that nested too many EVAL calls without
1637 consuming any text. Restructure the pattern so that text is
1638 consumed.
1639 The <-- HERE shows in the regular expression about where the
1641 problem was discovered.
1642 Excessively long <> operator
1644 (F) The contents of a <> operator may not exceed the maximum size
1645 of a Perl identifier. If you're just trying to glob a long list of
1646 filenames, try using the glob() operator, or put the filenames into
1647 a variable and glob that.
1648 exec? I'm not *that* kind of operating system
1650 (F) The "exec" function is not implemented on some systems, e.g.,
1651 Symbian OS. See perlport.
1652 Execution of %s aborted due to compilation errors.
1654 (F) The final summary message when a Perl compilation fails.
1655 Exiting eval via %s
1657 (W exiting) You are exiting an eval by unconventional means, such
1658 as a goto, or a loop control statement.
1659 Exiting format via %s
1661 (W exiting) You are exiting a format by unconventional means, such
1662 as a goto, or a loop control statement.
1663 Exiting pseudo-block via %s
1665 (W exiting) You are exiting a rather special block construct (like
1666 a sort block or subroutine) by unconventional means, such as a
1667 goto, or a loop control statement. See "sort" in perlfunc.
1668 Exiting subroutine via %s
1670 (W exiting) You are exiting a subroutine by unconventional means,
1671 such as a goto, or a loop control statement.
1672 Exiting substitution via %s
1674 (W exiting) You are exiting a substitution by unconventional means,
1675 such as a return, a goto, or a loop control statement.
1676 Explicit blessing to '' (assuming package main)
1678 (W misc) You are blessing a reference to a zero length string.
1679 This has the effect of blessing the reference into the package
1680 main. This is usually not what you want. Consider providing a
1681 default target package, e.g. bless($ref, $p || 'MyPackage');
1682 %s: Expression syntax
1684 (A) You've accidentally run your script through csh instead of
1685 Perl. Check the #! line, or manually feed your script into Perl
1686 yourself.
1687 %s failed--call queue aborted
1689 (F) An untrapped exception was raised while executing a UNITCHECK,
1690 CHECK, INIT, or END subroutine. Processing of the remainder of the
1691 queue of such routines has been prematurely ended.
1692 False [] range "%s" in regex; marked by <-- HERE in m/%s/
1694 (W regexp) A character class range must start and end at a literal
1695 character, not another character class like "\d" or "[:alpha:]".
1696 The "-" in your false range is interpreted as a literal "-".
1697 Consider quoting the "-", "\-". The <-- HERE shows in the regular
1698 expression about where the problem was discovered. See perlre.
1699 Fatal VMS error (status=%d) at %s, line %d
1701 (P) An error peculiar to VMS. Something untoward happened in a VMS
1702 system service or RTL routine; Perl's exit status should provide
1703 more details. The filename in "at %s" and the line number in "line
1704 %d" tell you which section of the Perl source code is distressed.
1705 fcntl is not implemented
1707 (F) Your machine apparently doesn't implement fcntl(). What is
1708 this, a PDP-11 or something?
1709 FETCHSIZE returned a negative value
1711 (F) A tied array claimed to have a negative number of elements,
1712 which is not possible.
1713 Field too wide in 'u' format in pack
1715 (W pack) Each line in an uuencoded string start with a length
1716 indicator which can't encode values above 63. So there is no point
1717 in asking for a line length bigger than that. Perl will behave as
1718 if you specified "u63" as the format.
1719 Filehandle %s opened only for input
1721 (W io) You tried to write on a read-only filehandle. If you
1722 intended it to be a read-write filehandle, you needed to open it
1723 with "+<" or "+>" or "+>>" instead of with "<" or nothing. If you
1724 intended only to write the file, use ">" or ">>". See "open" in
1725 perlfunc.
1726 Filehandle %s opened only for output
1728 (W io) You tried to read from a filehandle opened only for writing,
1729 If you intended it to be a read/write filehandle, you needed to
1730 open it with "+<" or "+>" or "+>>" instead of with ">". If you
1731 intended only to read from the file, use "<". See "open" in
1732 perlfunc. Another possibility is that you attempted to open
1733 filedescriptor 0 (also known as STDIN) for output (maybe you closed
1734 STDIN earlier?).
1735 Filehandle %s reopened as %s only for input
1737 (W io) You opened for reading a filehandle that got the same
1738 filehandle id as STDOUT or STDERR. This occurred because you
1739 closed STDOUT or STDERR previously.
1740 Filehandle STDIN reopened as %s only for output
1742 (W io) You opened for writing a filehandle that got the same
1743 filehandle id as STDIN. This occurred because you closed STDIN
1744 previously.
1745 Final $ should be \$ or $name
1747 (F) You must now decide whether the final $ in a string was meant
1748 to be a literal dollar sign, or was meant to introduce a variable
1749 name that happens to be missing. So you have to put either the
1750 backslash or the name.
1751 flock() on closed filehandle %s
1753 (W closed) The filehandle you're attempting to flock() got itself
1754 closed some time before now. Check your control flow. flock()
1755 operates on filehandles. Are you attempting to call flock() on a
1756 dirhandle by the same name?
1757 Format not terminated
1759 (F) A format must be terminated by a line with a solitary dot.
1760 Perl got to the end of your file without finding such a line.
1761 Format %s redefined
1763 (W redefine) You redefined a format. To suppress this warning, say
1764 {
1766 no warnings 'redefine';
1767 eval "format NAME =...";
1768 }
1769 Found = in conditional, should be ==
1771 (W syntax) You said
1772 if ($foo = 123)
1774 when you meant
1776 if ($foo == 123)
1778 (or something like that).
1780 %s found where operator expected
1782 (S syntax) The Perl lexer knows whether to expect a term or an
1783 operator. If it sees what it knows to be a term when it was
1784 expecting to see an operator, it gives you this warning. Usually
1785 it indicates that an operator or delimiter was omitted, such as a
1786 semicolon.
1787 gdbm store returned %d, errno %d, key "%s"
1789 (S) A warning from the GDBM_File extension that a store failed.
1790 gethostent not implemented
1792 (F) Your C library apparently doesn't implement gethostent(),
1793 probably because if it did, it'd feel morally obligated to return
1794 every hostname on the Internet.
1795 get%sname() on closed socket %s
1797 (W closed) You tried to get a socket or peer socket name on a
1798 closed socket. Did you forget to check the return value of your
1799 socket() call?
1800 getpwnam returned invalid UIC %#o for user "%s"
1802 (S) A warning peculiar to VMS. The call to "sys$getuai" underlying
1803 the "getpwnam" operator returned an invalid UIC.
1804 getsockopt() on closed socket %s
1806 (W closed) You tried to get a socket option on a closed socket.
1807 Did you forget to check the return value of your socket() call?
1808 See "getsockopt" in perlfunc.
1809 Global symbol "%s" requires explicit package name
1811 (F) You've said "use strict" or "use strict vars", which indicates
1812 that all variables must either be lexically scoped (using "my" or
1813 "state"), declared beforehand using "our", or explicitly qualified
1814 to say which package the global variable is in (using "::").
1815 glob failed (%s)
1817 (S glob) Something went wrong with the external program(s) used for
1818 "glob" and "<*.c>". Usually, this means that you supplied a "glob"
1819 pattern that caused the external program to fail and exit with a
1820 nonzero status. If the message indicates that the abnormal exit
1821 resulted in a coredump, this may also mean that your csh (C shell)
1822 is broken. If so, you should change all of the csh-related
1823 variables in config.sh: If you have tcsh, make the variables refer
1824 to it as if it were csh (e.g. "full_csh='/usr/bin/tcsh'");
1825 otherwise, make them all empty (except that "d_csh" should be
1826 'undef') so that Perl will think csh is missing. In either case,
1827 after editing config.sh, run "./Configure -S" and rebuild Perl.
1828 Glob not terminated
1830 (F) The lexer saw a left angle bracket in a place where it was
1831 expecting a term, so it's looking for the corresponding right angle
1832 bracket, and not finding it. Chances are you left some needed
1833 parentheses out earlier in the line, and you really meant a "less
1834 than".
1835 gmtime(%f) too large
1837 (W overflow) You called "gmtime" with a number that was larger than
1838 it can reliably handle and "gmtime" probably returned the wrong
1839 date. This warning is also triggered with NaN (the special not-a-
1840 number value).
1841 gmtime(%f) too small
1843 (W overflow) You called "gmtime" with a number that was smaller
1844 than it can reliably handle and "gmtime" probably returned the
1845 wrong date.
1846 Got an error from DosAllocMem
1848 (P) An error peculiar to OS/2. Most probably you're using an
1849 obsolete version of Perl, and this should not happen anyway.
1850 goto must have label
1852 (F) Unlike with "next" or "last", you're not allowed to goto an
1853 unspecified destination. See "goto" in perlfunc.
1854 Goto undefined subroutine%s
1856 (F) You tried to call a subroutine with "goto &sub" syntax, but the
1857 indicated subroutine hasn't been defined, or if it was, it has
1858 since been undefined.
1859 ()-group starts with a count
1861 (F) A ()-group started with a count. A count is supposed to follow
1862 something: a template character or a ()-group. See "pack" in
1863 perlfunc.
1864 %s had compilation errors.
1866 (F) The final summary message when a "perl -c" fails.
1867 Had to create %s unexpectedly
1869 (S internal) A routine asked for a symbol from a symbol table that
1870 ought to have existed already, but for some reason it didn't, and
1871 had to be created on an emergency basis to prevent a core dump.
1872 Hash %%s missing the % in argument %d of %s()
1874 (D deprecated) Really old Perl let you omit the % on hash names in
1875 some spots. This is now heavily deprecated.
1876 %s has too many errors
1878 (F) The parser has given up trying to parse the program after 10
1879 errors. Further error messages would likely be uninformative.
1880 Having no space between pattern and following word is deprecated
1882 (D syntax)
1883 You had a word that isn't a regex modifier immediately following a
1885 pattern without an intervening space. If you are trying to use the
1886 "/le" flags on a substitution, use "/el" instead. Otherwise, add
1887 white space between the pattern and following word to eliminate the
1888 warning. As an example of the latter, the two constructs:
1889 $a =~ m/$foo/sand $bar
1891 $a =~ m/$foo/s and $bar
1892 both currently mean the same thing, but it is planned to disallow
1894 the first form in Perl 5.18. And,
1895 $a =~ m/$foo/and $bar
1897 will be disallowed too.
1899 Hexadecimal number > 0xffffffff non-portable
1901 (W portable) The hexadecimal number you specified is larger than
1902 2**32-1 (4294967295) and therefore non-portable between systems.
1903 See perlport for more on portability concerns.
1904 Identifier too long
1906 (F) Perl limits identifiers (names for variables, functions, etc.)
1907 to about 250 characters for simple names, and somewhat more for
1908 compound names (like $A::B). You've exceeded Perl's limits.
1909 Future versions of Perl are likely to eliminate these arbitrary
1910 limitations.
1911 Ignoring zero length \N{} in character class
1913 (W) Named Unicode character escapes "(\N{...})" may return a zero-
1914 length sequence. When such an escape is used in a character class
1915 its behaviour is not well defined. Check that the correct escape
1916 has been used, and the correct charname handler is in scope.
1917 Illegal binary digit %s
1919 (F) You used a digit other than 0 or 1 in a binary number.
1920 Illegal binary digit %s ignored
1922 (W digit) You may have tried to use a digit other than 0 or 1 in a
1923 binary number. Interpretation of the binary number stopped before
1924 the offending digit.
1925 Illegal character after '_' in prototype for %s : %s
1927 (W illegalproto) An illegal character was found in a prototype
1928 declaration. Legal characters in prototypes are $, @, %, *, ;, [,
1929 ], &, \, and +.
1930 Illegal character \%o (carriage return)
1932 (F) Perl normally treats carriage returns in the program text as it
1933 would any other whitespace, which means you should never see this
1934 error when Perl was built using standard options. For some reason,
1935 your version of Perl appears to have been built without this
1936 support. Talk to your Perl administrator.
1937 Illegal character in prototype for %s : %s
1939 (W illegalproto) An illegal character was found in a prototype
1940 declaration. Legal characters in prototypes are $, @, %, *, ;, [,
1941 ], &, \, and +.
1942 Illegal declaration of anonymous subroutine
1944 (F) When using the "sub" keyword to construct an anonymous
1945 subroutine, you must always specify a block of code. See perlsub.
1946 Illegal declaration of subroutine %s
1948 (F) A subroutine was not declared correctly. See perlsub.
1949 Illegal division by zero
1951 (F) You tried to divide a number by 0. Either something was wrong
1952 in your logic, or you need to put a conditional in to guard against
1953 meaningless input.
1954 Illegal hexadecimal digit %s ignored
1956 (W digit) You may have tried to use a character other than 0 - 9 or
1957 A - F, a - f in a hexadecimal number. Interpretation of the
1958 hexadecimal number stopped before the illegal character.
1959 Illegal modulus zero
1961 (F) You tried to divide a number by 0 to get the remainder. Most
1962 numbers don't take to this kindly.
1963 Illegal number of bits in vec
1965 (F) The number of bits in vec() (the third argument) must be a
1966 power of two from 1 to 32 (or 64, if your platform supports that).
1967 Illegal octal digit %s
1969 (F) You used an 8 or 9 in an octal number.
1970 Illegal octal digit %s ignored
1972 (W digit) You may have tried to use an 8 or 9 in an octal number.
1973 Interpretation of the octal number stopped before the 8 or 9.
1974 Illegal switch in PERL5OPT: -%c
1976 (X) The PERL5OPT environment variable may only be used to set the
1977 following switches: -[CDIMUdmtw].
1978 Ill-formed CRTL environ value "%s"
1980 (W internal) A warning peculiar to VMS. Perl tried to read the
1981 CRTL's internal environ array, and encountered an element without
1982 the "=" delimiter used to separate keys from values. The element
1983 is ignored.
1984 Ill-formed message in prime_env_iter: |%s|
1986 (W internal) A warning peculiar to VMS. Perl tried to read a
1987 logical name or CLI symbol definition when preparing to iterate
1988 over %ENV, and didn't see the expected delimiter between key and
1989 value, so the line was ignored.
1990 (in cleanup) %s
1992 (W misc) This prefix usually indicates that a DESTROY() method
1993 raised the indicated exception. Since destructors are usually
1994 called by the system at arbitrary points during execution, and
1995 often a vast number of times, the warning is issued only once for
1996 any number of failures that would otherwise result in the same
1997 message being repeated.
1998 Failure of user callbacks dispatched using the "G_KEEPERR" flag
2000 could also result in this warning. See "G_KEEPERR" in perlcall.
2001 Inconsistent hierarchy during C3 merge of class '%s': merging failed on
2003 parent '%s'
2004 (F) The method resolution order (MRO) of the given class is not
2005 C3-consistent, and you have enabled the C3 MRO for this class. See
2006 the C3 documentation in mro for more information.
2007 In EBCDIC the v-string components cannot exceed 2147483647
2009 (F) An error peculiar to EBCDIC. Internally, v-strings are stored
2010 as Unicode code points, and encoded in EBCDIC as UTF-EBCDIC. The
2011 UTF-EBCDIC encoding is limited to code points no larger than
2012 2147483647 (0x7FFFFFFF).
2013 Infinite recursion in regex; marked by <-- HERE in m/%s/
2015 (F) You used a pattern that references itself without consuming any
2016 input text. You should check the pattern to ensure that recursive
2017 patterns either consume text or fail.
2018 The <-- HERE shows in the regular expression about where the
2020 problem was discovered.
2021 Initialization of state variables in list context currently forbidden
2023 (F) Currently the implementation of "state" only permits the
2024 initialization of scalar variables in scalar context. Re-write
2025 "state ($a) = 42" as "state $a = 42" to change from list to scalar
2026 context. Constructions such as "state (@a) = foo()" will be
2027 supported in a future perl release.
2028 Insecure dependency in %s
2030 (F) You tried to do something that the tainting mechanism didn't
2031 like. The tainting mechanism is turned on when you're running
2032 setuid or setgid, or when you specify -T to turn it on explicitly.
2033 The tainting mechanism labels all data that's derived directly or
2034 indirectly from the user, who is considered to be unworthy of your
2035 trust. If any such data is used in a "dangerous" operation, you
2036 get this error. See perlsec for more information.
2037 Insecure directory in %s
2039 (F) You can't use system(), exec(), or a piped open in a setuid or
2040 setgid script if $ENV{PATH} contains a directory that is writable
2041 by the world. Also, the PATH must not contain any relative
2042 directory. See perlsec.
2043 Insecure $ENV{%s} while running %s
2045 (F) You can't use system(), exec(), or a piped open in a setuid or
2046 setgid script if any of $ENV{PATH}, $ENV{IFS}, $ENV{CDPATH},
2047 $ENV{ENV}, $ENV{BASH_ENV} or $ENV{TERM} are derived from data
2048 supplied (or potentially supplied) by the user. The script must
2049 set the path to a known value, using trustworthy data. See
2050 perlsec.
2051 Insecure user-defined property %s
2053 (F) Perl detected tainted data when trying to compile a regular
2054 expression that contains a call to a user-defined character
2055 property function, i.e. "\p{IsFoo}" or "\p{InFoo}". See "User-
2056 Defined Character Properties" in perlunicode and perlsec.
2057 Integer overflow in format string for %s
2059 (F) The indexes and widths specified in the format string of
2060 "printf()" or "sprintf()" are too large. The numbers must not
2061 overflow the size of integers for your architecture.
2062 Integer overflow in %s number
2064 (W overflow) The hexadecimal, octal or binary number you have
2065 specified either as a literal or as an argument to hex() or oct()
2066 is too big for your architecture, and has been converted to a
2067 floating point number. On a 32-bit architecture the largest
2068 hexadecimal, octal or binary number representable without overflow
2069 is 0xFFFFFFFF, 037777777777, or 0b11111111111111111111111111111111
2070 respectively. Note that Perl transparently promotes all numbers to
2071 a floating point representation internally--subject to loss of
2072 precision errors in subsequent operations.
2073 Integer overflow in version
2075 (F) Some portion of a version initialization is too large for the
2076 size of integers for your architecture. This is not a warning
2077 because there is no rational reason for a version to try and use a
2078 element larger than typically 2**32. This is usually caused by
2079 trying to use some odd mathematical operation as a version, like
2080 100/9.
2081 Internal disaster in regex; marked by <-- HERE in m/%s/
2083 (P) Something went badly wrong in the regular expression parser.
2084 The <-- HERE shows in the regular expression about where the
2085 problem was discovered.
2086 Internal inconsistency in tracking vforks
2088 (S) A warning peculiar to VMS. Perl keeps track of the number of
2089 times you've called "fork" and "exec", to determine whether the
2090 current call to "exec" should affect the current script or a
2091 subprocess (see "exec LIST" in perlvms). Somehow, this count has
2092 become scrambled, so Perl is making a guess and treating this
2093 "exec" as a request to terminate the Perl script and execute the
2094 specified command.
2095 Internal urp in regex; marked by <-- HERE in m/%s/
2097 (P) Something went badly awry in the regular expression parser.
2098 The <-- HERE shows in the regular expression about where the
2099 problem was discovered.
2100 %s (...) interpreted as function
2102 (W syntax) You've run afoul of the rule that says that any list
2103 operator followed by parentheses turns into a function, with all
2104 the list operators arguments found inside the parentheses. See
2105 "Terms and List Operators (Leftward)" in perlop.
2106 Invalid %s attribute: %s
2108 (F) The indicated attribute for a subroutine or variable was not
2109 recognized by Perl or by a user-supplied handler. See attributes.
2110 Invalid %s attributes: %s
2112 (F) The indicated attributes for a subroutine or variable were not
2113 recognized by Perl or by a user-supplied handler. See attributes.
2114 Invalid conversion in %s: "%s"
2116 (W printf) Perl does not understand the given format conversion.
2117 See "sprintf" in perlfunc.
2118 Invalid escape in the specified encoding in regex; marked by <-- HERE
2120 in m/%s/
2121 (W regexp) The numeric escape (for example "\xHH") of value < 256
2122 didn't correspond to a single character through the conversion from
2123 the encoding specified by the encoding pragma. The escape was
2124 replaced with REPLACEMENT CHARACTER (U+FFFD) instead. The <-- HERE
2125 shows in the regular expression about where the escape was
2126 discovered.
2127 Invalid hexadecimal number in \N{U+...}
2129 (F) The character constant represented by "..." is not a valid
2130 hexadecimal number. Either it is empty, or you tried to use a
2131 character other than 0 - 9 or A - F, a - f in a hexadecimal number.
2132 Invalid module name %s with -%c option: contains single ':'
2134 (F) The module argument to perl's -m and -M command-line options
2135 cannot contain single colons in the module name, but only in the
2136 arguments after "=". In other words, -MFoo::Bar=:baz is ok, but
2137 -MFoo:Bar=baz is not.
2138 Invalid mro name: '%s'
2140 (F) You tried to "mro::set_mro("classname", "foo")" or "use mro
2141 'foo'", where "foo" is not a valid method resolution order (MRO).
2142 Currently, the only valid ones supported are "dfs" and "c3", unless
2143 you have loaded a module that is a MRO plugin. See mro and
2144 perlmroapi.
2145 invalid option -D%c, use -D'' to see choices
2147 (F) Perl was called with invalid debugger flags. Call perl with
2148 the -D option with no flags to see the list of acceptable values.
2149 See also "-Dletters" in perlrun.
2150 Invalid [] range "%s" in regex; marked by <-- HERE in m/%s/
2152 (F) The range specified in a character class had a minimum
2153 character greater than the maximum character. One possibility is
2154 that you forgot the "{}" from your ending "\x{}" - "\x" without the
2155 curly braces can go only up to "ff". The <-- HERE shows in the
2156 regular expression about where the problem was discovered. See
2157 perlre.
2158 Invalid range "%s" in transliteration operator
2160 (F) The range specified in the tr/// or y/// operator had a minimum
2161 character greater than the maximum character. See perlop.
2162 Invalid separator character %s in attribute list
2164 (F) Something other than a colon or whitespace was seen between the
2165 elements of an attribute list. If the previous attribute had a
2166 parenthesised parameter list, perhaps that list was terminated too
2167 soon. See attributes.
2168 Invalid separator character %s in PerlIO layer specification %s
2170 (W layer) When pushing layers onto the Perl I/O system, something
2171 other than a colon or whitespace was seen between the elements of a
2172 layer list. If the previous attribute had a parenthesised
2173 parameter list, perhaps that list was terminated too soon.
2174 Invalid strict version format (%s)
2176 (F) A version number did not meet the "strict" criteria for
2177 versions. A "strict" version number is a positive decimal number
2178 (integer or decimal-fraction) without exponentiation or else a
2179 dotted-decimal v-string with a leading 'v' character and at least
2180 three components. The parenthesized text indicates which criteria
2181 were not met. See the version module for more details on allowed
2182 version formats.
2183 Invalid type '%s' in %s
2185 (F) The given character is not a valid pack or unpack type. See
2186 "pack" in perlfunc.
2187 (W) The given character is not a valid pack or unpack type but used
2189 to be silently ignored.
2190 Invalid version format (%s)
2192 (F) A version number did not meet the "lax" criteria for versions.
2193 A "lax" version number is a positive decimal number (integer or
2194 decimal-fraction) without exponentiation or else a dotted-decimal
2195 v-string. If the v-string has fewer than three components, it must
2196 have a leading 'v' character. Otherwise, the leading 'v' is
2197 optional. Both decimal and dotted-decimal versions may have a
2198 trailing "alpha" component separated by an underscore character
2199 after a fractional or dotted-decimal component. The parenthesized
2200 text indicates which criteria were not met. See the version module
2201 for more details on allowed version formats.
2202 Invalid version object
2204 (F) The internal structure of the version object was invalid.
2205 Perhaps the internals were modified directly in some way or an
2206 arbitrary reference was blessed into the "version" class.
2207 ioctl is not implemented
2209 (F) Your machine apparently doesn't implement ioctl(), which is
2210 pretty strange for a machine that supports C.
2211 ioctl() on unopened %s
2213 (W unopened) You tried ioctl() on a filehandle that was never
2214 opened. Check your control flow and number of arguments.
2215 IO layers (like '%s') unavailable
2217 (F) Your Perl has not been configured to have PerlIO, and therefore
2218 you cannot use IO layers. To have PerlIO, Perl must be configured
2219 with 'useperlio'.
2220 IO::Socket::atmark not implemented on this architecture
2222 (F) Your machine doesn't implement the sockatmark() functionality,
2223 neither as a system call nor an ioctl call (SIOCATMARK).
2224 $* is no longer supported
2226 (D deprecated, syntax) The special variable $*, deprecated in older
2227 perls, has been removed as of 5.9.0 and is no longer supported. In
2228 previous versions of perl the use of $* enabled or disabled multi-
2229 line matching within a string.
2230 Instead of using $* you should use the "/m" (and maybe "/s") regexp
2232 modifiers. You can enable "/m" for a lexical scope (even a whole
2233 file) with "use re '/m'". (In older versions: when $* was set to a
2234 true value then all regular expressions behaved as if they were
2235 written using "/m".)
2236 $# is no longer supported
2238 (D deprecated, syntax) The special variable $#, deprecated in older
2239 perls, has been removed as of 5.9.3 and is no longer supported.
2240 You should use the printf/sprintf functions instead.
2241 '%s' is not a code reference
2243 (W overload) The second (fourth, sixth, ...) argument of
2244 overload::constant needs to be a code reference. Either an
2245 anonymous subroutine, or a reference to a subroutine.
2246 '%s' is not an overloadable type
2248 (W overload) You tried to overload a constant type the overload
2249 package is unaware of.
2250 junk on end of regexp
2252 (P) The regular expression parser is confused.
2253 Label not found for "last %s"
2255 (F) You named a loop to break out of, but you're not currently in a
2256 loop of that name, not even if you count where you were called
2257 from. See "last" in perlfunc.
2258 Label not found for "next %s"
2260 (F) You named a loop to continue, but you're not currently in a
2261 loop of that name, not even if you count where you were called
2262 from. See "last" in perlfunc.
2263 Label not found for "redo %s"
2265 (F) You named a loop to restart, but you're not currently in a loop
2266 of that name, not even if you count where you were called from.
2267 See "last" in perlfunc.
2268 leaving effective %s failed
2270 (F) While under the "use filetest" pragma, switching the real and
2271 effective uids or gids failed.
2272 length/code after end of string in unpack
2274 (F) While unpacking, the string buffer was already used up when an
2275 unpack length/code combination tried to obtain more data. This
2276 results in an undefined value for the length. See "pack" in
2277 perlfunc.
2278 length() used on %s
2280 (W syntax) You used length() on either an array or a hash when you
2281 probably wanted a count of the items.
2282 Array size can be obtained by doing:
2284 scalar(@array);
2286 The number of items in a hash can be obtained by doing:
2288 scalar(keys %hash);
2290 Lexing code attempted to stuff non-Latin-1 character into Latin-1 input
2292 (F) An extension is attempting to insert text into the current
2293 parse (using lex_stuff_pvn or similar), but tried to insert a
2294 character that couldn't be part of the current input. This is an
2295 inherent pitfall of the stuffing mechanism, and one of the reasons
2296 to avoid it. Where it is necessary to stuff, stuffing only plain
2297 ASCII is recommended.
2298 Lexing code internal error (%s)
2300 (F) Lexing code supplied by an extension violated the lexer's API
2301 in a detectable way.
2302 listen() on closed socket %s
2304 (W closed) You tried to do a listen on a closed socket. Did you
2305 forget to check the return value of your socket() call? See
2306 "listen" in perlfunc.
2307 List form of piped open not implemented
2309 (F) On some platforms, notably Windows, the three-or-more-arguments
2310 form of "open" does not support pipes, such as "open($pipe, '|-',
2311 @args)". Use the two-argument "open($pipe, '|prog arg1 arg2...')"
2312 form instead.
2313 localtime(%f) too large
2315 (W overflow) You called "localtime" with a number that was larger
2316 than it can reliably handle and "localtime" probably returned the
2317 wrong date. This warning is also triggered with NaN (the special
2318 not-a-number value).
2319 localtime(%f) too small
2321 (W overflow) You called "localtime" with a number that was smaller
2322 than it can reliably handle and "localtime" probably returned the
2323 wrong date.
2324 Lookbehind longer than %d not implemented in regex m/%s/
2326 (F) There is currently a limit on the length of string which
2327 lookbehind can handle. This restriction may be eased in a future
2328 release.
2329 Lost precision when %s %f by 1
2331 (W) The value you attempted to increment or decrement by one is too
2332 large for the underlying floating point representation to store
2333 accurately, hence the target of "++" or "--" is unchanged. Perl
2334 issues this warning because it has already switched from integers
2335 to floating point when values are too large for integers, and now
2336 even floating point is insufficient. You may wish to switch to
2337 using Math::BigInt explicitly.
2338 lstat() on filehandle%s
2340 (W io) You tried to do an lstat on a filehandle. What did you mean
2341 by that? lstat() makes sense only on filenames. (Perl did a
2342 fstat() instead on the filehandle.)
2343 lvalue attribute %s already-defined subroutine
2345 (W misc) Although attributes.pm allows this, turning the lvalue
2346 attribute on or off on a Perl subroutine that is already defined
2347 does not always work properly. It may or may not do what you want,
2348 depending on what code is inside the subroutine, with exact details
2349 subject to change between Perl versions. Only do this if you
2350 really know what you are doing.
2351 lvalue attribute ignored after the subroutine has been defined
2353 (W misc) Using the ":lvalue" declarative syntax to make a Perl
2354 subroutine an lvalue subroutine after it has been defined is not
2355 permitted. To make the subroutine an lvalue subroutine, add the
2356 lvalue attribute to the definition, or put the "sub foo :lvalue;"
2357 declaration before the definition.
2358 See also attributes.pm.
2360 Malformed integer in [] in pack
2362 (F) Between the brackets enclosing a numeric repeat count only
2363 digits are permitted. See "pack" in perlfunc.
2364 Malformed integer in [] in unpack
2366 (F) Between the brackets enclosing a numeric repeat count only
2367 digits are permitted. See "pack" in perlfunc.
2368 Malformed PERLLIB_PREFIX
2370 (F) An error peculiar to OS/2. PERLLIB_PREFIX should be of the
2371 form
2372 prefix1;prefix2
2374 or
2376 prefix1 prefix2
2377 with nonempty prefix1 and prefix2. If "prefix1" is indeed a prefix
2379 of a builtin library search path, prefix2 is substituted. The
2380 error may appear if components are not found, or are too long. See
2381 "PERLLIB_PREFIX" in perlos2.
2382 Malformed prototype for %s: %s
2384 (F) You tried to use a function with a malformed prototype. The
2385 syntax of function prototypes is given a brief compile-time check
2386 for obvious errors like invalid characters. A more rigorous check
2387 is run when the function is called.
2388 Malformed UTF-8 character (%s)
2390 (S utf8)(F) Perl detected a string that didn't comply with UTF-8
2391 encoding rules, even though it had the UTF8 flag on.
2392 One possible cause is that you set the UTF8 flag yourself for data
2394 that you thought to be in UTF-8 but it wasn't (it was for example
2395 legacy 8-bit data). To guard against this, you can use
2396 Encode::decode_utf8.
2397 If you use the ":encoding(UTF-8)" PerlIO layer for input, invalid
2399 byte sequences are handled gracefully, but if you use ":utf8", the
2400 flag is set without validating the data, possibly resulting in this
2401 error message.
2402 See also "Handling Malformed Data" in Encode.
2404 Malformed UTF-8 returned by \N
2406 (F) The charnames handler returned malformed UTF-8.
2407 Malformed UTF-8 string in '%c' format in unpack
2409 (F) You tried to unpack something that didn't comply with UTF-8
2410 encoding rules and perl was unable to guess how to make more
2411 progress.
2412 Malformed UTF-8 string in pack
2414 (F) You tried to pack something that didn't comply with UTF-8
2415 encoding rules and perl was unable to guess how to make more
2416 progress.
2417 Malformed UTF-8 string in unpack
2419 (F) You tried to unpack something that didn't comply with UTF-8
2420 encoding rules and perl was unable to guess how to make more
2421 progress.
2422 Malformed UTF-16 surrogate
2424 (F) Perl thought it was reading UTF-16 encoded character data but
2425 while doing it Perl met a malformed Unicode surrogate.
2426 %s matches null string many times in regex; marked by <-- HERE in m/%s/
2428 (W regexp) The pattern you've specified would be an infinite loop
2429 if the regular expression engine didn't specifically check for
2430 that. The <-- HERE shows in the regular expression about where the
2431 problem was discovered. See perlre.
2432 Maximal count of pending signals (%u) exceeded
2434 (F) Perl aborted due to too high a number of signals pending. This
2435 usually indicates that your operating system tried to deliver
2436 signals too fast (with a very high priority), starving the perl
2437 process from resources it would need to reach a point where it can
2438 process signals safely. (See "Deferred Signals (Safe Signals)" in
2439 perlipc.)
2440 "%s" may clash with future reserved word
2442 (W) This warning may be due to running a perl5 script through a
2443 perl4 interpreter, especially if the word that is being warned
2444 about is "use" or "my".
2445 '%' may not be used in pack
2447 (F) You can't pack a string by supplying a checksum, because the
2448 checksumming process loses information, and you can't go the other
2449 way. See "unpack" in perlfunc.
2450 Method for operation %s not found in package %s during blessing
2452 (F) An attempt was made to specify an entry in an overloading table
2453 that doesn't resolve to a valid subroutine. See overload.
2454 Method %s not permitted
2456 See Server error.
2457 Might be a runaway multi-line %s string starting on line %d
2459 (S) An advisory indicating that the previous error may have been
2460 caused by a missing delimiter on a string or pattern, because it
2461 eventually ended earlier on the current line.
2462 Misplaced _ in number
2464 (W syntax) An underscore (underbar) in a numeric constant did not
2465 separate two digits.
2466 Missing argument in %s
2468 (W uninitialized) A printf-type format required more arguments than
2469 were supplied.
2470 Missing argument to -%c
2472 (F) The argument to the indicated command line switch must follow
2473 immediately after the switch, without intervening spaces.
2474 Missing braces on \N{}
2476 (F) Wrong syntax of character name literal "\N{charname}" within
2477 double-quotish context. This can also happen when there is a space
2478 (or comment) between the "\N" and the "{" in a regex with the "/x"
2479 modifier. This modifier does not change the requirement that the
2480 brace immediately follow the "\N".
2481 Missing braces on \o{}
2483 (F) A "\o" must be followed immediately by a "{" in double-quotish
2484 context.
2485 Missing comma after first argument to %s function
2487 (F) While certain functions allow you to specify a filehandle or an
2488 "indirect object" before the argument list, this ain't one of them.
2489 Missing command in piped open
2491 (W pipe) You used the "open(FH, "| command")" or "open(FH, "command
2492 |")" construction, but the command was missing or blank.
2493 Missing control char name in \c
2495 (F) A double-quoted string ended with "\c", without the required
2496 control character name.
2497 Missing name in "my sub"
2499 (F) The reserved syntax for lexically scoped subroutines requires
2500 that they have a name with which they can be found.
2501 Missing $ on loop variable
2503 (F) Apparently you've been programming in csh too much. Variables
2504 are always mentioned with the $ in Perl, unlike in the shells,
2505 where it can vary from one line to the next.
2506 (Missing operator before %s?)
2508 (S syntax) This is an educated guess made in conjunction with the
2509 message "%s found where operator expected". Often the missing
2510 operator is a comma.
2511 Missing right brace on %s
2513 (F) Missing right brace in "\x{...}", "\p{...}", "\P{...}", or
2514 "\N{...}".
2515 Missing right brace on \N{} or unescaped left brace after \N
2517 (F) "\N" has two meanings.
2518 The traditional one has it followed by a name enclosed in braces,
2520 meaning the character (or sequence of characters) given by that
2521 name. Thus "\N{ASTERISK}" is another way of writing "*", valid in
2522 both double-quoted strings and regular expression patterns. In
2523 patterns, it doesn't have the meaning an unescaped "*" does.
2524 Starting in Perl 5.12.0, "\N" also can have an additional meaning
2526 (only) in patterns, namely to match a non-newline character. (This
2527 is short for "[^\n]", and like "." but is not affected by the "/s"
2528 regex modifier.)
2529 This can lead to some ambiguities. When "\N" is not followed
2531 immediately by a left brace, Perl assumes the "[^\n]" meaning.
2532 Also, if the braces form a valid quantifier such as "\N{3}" or
2533 "\N{5,}", Perl assumes that this means to match the given quantity
2534 of non-newlines (in these examples, 3; and 5 or more,
2535 respectively). In all other case, where there is a "\N{" and a
2536 matching "}", Perl assumes that a character name is desired.
2537 However, if there is no matching "}", Perl doesn't know if it was
2539 mistakenly omitted, or if "[^\n]{" was desired, and raises this
2540 error. If you meant the former, add the right brace; if you meant
2541 the latter, escape the brace with a backslash, like so: "\N\{"
2542 Missing right curly or square bracket
2544 (F) The lexer counted more opening curly or square brackets than
2545 closing ones. As a general rule, you'll find it's missing near the
2546 place you were last editing.
2547 (Missing semicolon on previous line?)
2549 (S syntax) This is an educated guess made in conjunction with the
2550 message "%s found where operator expected". Don't automatically
2551 put a semicolon on the previous line just because you saw this
2552 message.
2553 Modification of a read-only value attempted
2555 (F) You tried, directly or indirectly, to change the value of a
2556 constant. You didn't, of course, try "2 = 1", because the compiler
2557 catches that. But an easy way to do the same thing is:
2558 sub mod { $_[0] = 1 }
2560 mod(2);
2561 Another way is to assign to a substr() that's off the end of the
2563 string.
2564 Yet another way is to assign to a "foreach" loop VAR when VAR is
2566 aliased to a constant in the look LIST:
2567 $x = 1;
2569 foreach my $n ($x, 2) {
2570 $n *= 2; # modifies the $x, but fails on attempt to
2571 } # modify the 2
2572 Modification of non-creatable array value attempted, %s
2574 (F) You tried to make an array value spring into existence, and the
2575 subscript was probably negative, even counting from end of the
2576 array backwards.
2577 Modification of non-creatable hash value attempted, %s
2579 (P) You tried to make a hash value spring into existence, and it
2580 couldn't be created for some peculiar reason.
2581 Module name must be constant
2583 (F) Only a bare module name is allowed as the first argument to a
2584 "use".
2585 Module name required with -%c option
2587 (F) The "-M" or "-m" options say that Perl should load some module,
2588 but you omitted the name of the module. Consult perlrun for full
2589 details about "-M" and "-m".
2590 More than one argument to '%s' open
2592 (F) The "open" function has been asked to open multiple files.
2593 This can happen if you are trying to open a pipe to a command that
2594 takes a list of arguments, but have forgotten to specify a piped
2595 open mode. See "open" in perlfunc for details.
2596 msg%s not implemented
2598 (F) You don't have System V message IPC on your system.
2599 Multidimensional syntax %s not supported
2601 (W syntax) Multidimensional arrays aren't written like $foo[1,2,3].
2602 They're written like $foo[1][2][3], as in C.
2603 '/' must follow a numeric type in unpack
2605 (F) You had an unpack template that contained a '/', but this did
2606 not follow some unpack specification producing a numeric value.
2607 See "pack" in perlfunc.
2608 "my sub" not yet implemented
2610 (F) Lexically scoped subroutines are not yet implemented. Don't
2611 try that yet.
2612 "my" variable %s can't be in a package
2614 (F) Lexically scoped variables aren't in a package, so it doesn't
2615 make sense to try to declare one with a package qualifier on the
2616 front. Use local() if you want to localize a package variable.
2617 Name "%s::%s" used only once: possible typo
2619 (W once) Typographical errors often show up as unique variable
2620 names. If you had a good reason for having a unique name, then
2621 just mention it again somehow to suppress the message. The "our"
2622 declaration is provided for this purpose.
2623 NOTE: This warning detects symbols that have been used only once so
2625 $c, @c, %c, *c, &c, sub c{}, c(), and c (the filehandle or format)
2626 are considered the same; if a program uses $c only once but also
2627 uses any of the others it will not trigger this warning.
2628 \N in a character class must be a named character: \N{...}
2630 (F) The new (5.12) meaning of "\N" as "[^\n]" is not valid in a
2631 bracketed character class, for the same reason that "." in a
2632 character class loses its specialness: it matches almost
2633 everything, which is probably not what you want.
2634 \N{NAME} must be resolved by the lexer
2636 (F) When compiling a regex pattern, an unresolved named character
2637 or sequence was encountered. This can happen in any of several
2638 ways that bypass the lexer, such as using single-quotish context,
2639 or an extra backslash in double-quotish:
2640 $re = '\N{SPACE}'; # Wrong!
2642 $re = "\\N{SPACE}"; # Wrong!
2643 /$re/;
2644 Instead, use double-quotes with a single backslash:
2646 $re = "\N{SPACE}"; # ok
2648 /$re/;
2649 The lexer can be bypassed as well by creating the pattern from
2651 smaller components:
2652 $re = '\N';
2654 /${re}{SPACE}/; # Wrong!
2655 It's not a good idea to split a construct in the middle like this,
2657 and it doesn't work here. Instead use the solution above.
2658 Finally, the message also can happen under the "/x" regex modifier
2660 when the "\N" is separated by spaces from the "{", in which case,
2661 remove the spaces.
2662 /\N {SPACE}/x; # Wrong!
2664 /\N{SPACE}/x; # ok
2665 Negative '/' count in unpack
2667 (F) The length count obtained from a length/code unpack operation
2668 was negative. See "pack" in perlfunc.
2669 Negative length
2671 (F) You tried to do a read/write/send/recv operation with a buffer
2672 length that is less than 0. This is difficult to imagine.
2673 Negative offset to vec in lvalue context
2675 (F) When "vec" is called in an lvalue context, the second argument
2676 must be greater than or equal to zero.
2677 Nested quantifiers in regex; marked by <-- HERE in m/%s/
2679 (F) You can't quantify a quantifier without intervening
2680 parentheses. So things like ** or +* or ?* are illegal. The <--
2681 HERE shows in the regular expression about where the problem was
2682 discovered.
2683 Note that the minimal matching quantifiers, "*?", "+?", and "??"
2685 appear to be nested quantifiers, but aren't. See perlre.
2686 %s never introduced
2688 (S internal) The symbol in question was declared but somehow went
2689 out of scope before it could possibly have been used.
2690 next::method/next::can/maybe::next::method cannot find enclosing method
2692 (F) "next::method" needs to be called within the context of a real
2693 method in a real package, and it could not find such a context.
2694 See mro.
2695 No %s allowed while running setuid
2697 (F) Certain operations are deemed to be too insecure for a setuid
2698 or setgid script to even be allowed to attempt. Generally speaking
2699 there will be another way to do what you want that is, if not
2700 secure, at least securable. See perlsec.
2701 No code specified for -%c
2703 (F) Perl's -e and -E command-line options require an argument. If
2704 you want to run an empty program, pass the empty string as a
2705 separate argument or run a program consisting of a single 0 or 1:
2706 perl -e ""
2708 perl -e0
2709 perl -e1
2710 No comma allowed after %s
2712 (F) A list operator that has a filehandle or "indirect object" is
2713 not allowed to have a comma between that and the following
2714 arguments. Otherwise it'd be just another one of the arguments.
2715 One possible cause for this is that you expected to have imported a
2717 constant to your name space with use or import while no such
2718 importing took place, it may for example be that your operating
2719 system does not support that particular constant. Hopefully you
2720 did use an explicit import list for the constants you expect to
2721 see; please see "use" in perlfunc and "import" in perlfunc. While
2722 an explicit import list would probably have caught this error
2723 earlier it naturally does not remedy the fact that your operating
2724 system still does not support that constant. Maybe you have a typo
2725 in the constants of the symbol import list of use or import or in
2726 the constant name at the line where this error was triggered?
2727 No command into which to pipe on command line
2729 (F) An error peculiar to VMS. Perl handles its own command line
2730 redirection, and found a '|' at the end of the command line, so it
2731 doesn't know where you want to pipe the output from this command.
2732 No DB::DB routine defined
2734 (F) The currently executing code was compiled with the -d switch,
2735 but for some reason the current debugger (e.g. perl5db.pl or a
2736 "Devel::" module) didn't define a routine to be called at the
2737 beginning of each statement.
2738 No dbm on this machine
2740 (P) This is counted as an internal error, because every machine
2741 should supply dbm nowadays, because Perl comes with SDBM. See
2742 SDBM_File.
2743 No DB::sub routine defined
2745 (F) The currently executing code was compiled with the -d switch,
2746 but for some reason the current debugger (e.g. perl5db.pl or a
2747 "Devel::" module) didn't define a "DB::sub" routine to be called at
2748 the beginning of each ordinary subroutine call.
2749 No directory specified for -I
2751 (F) The -I command-line switch requires a directory name as part of
2752 the same argument. Use -Ilib, for instance. -I lib won't work.
2753 No error file after 2> or 2>> on command line
2755 (F) An error peculiar to VMS. Perl handles its own command line
2756 redirection, and found a '2>' or a '2>>' on the command line, but
2757 can't find the name of the file to which to write data destined for
2758 stderr.
2759 No group ending character '%c' found in template
2761 (F) A pack or unpack template has an opening '(' or '[' without its
2762 matching counterpart. See "pack" in perlfunc.
2763 No input file after < on command line
2765 (F) An error peculiar to VMS. Perl handles its own command line
2766 redirection, and found a '<' on the command line, but can't find
2767 the name of the file from which to read data for stdin.
2768 No next::method '%s' found for %s
2770 (F) "next::method" found no further instances of this method name
2771 in the remaining packages of the MRO of this class. If you don't
2772 want it throwing an exception, use "maybe::next::method" or
2773 "next::can". See mro.
2774 "no" not allowed in expression
2776 (F) The "no" keyword is recognized and executed at compile time,
2777 and returns no useful value. See perlmod.
2778 No output file after > on command line
2780 (F) An error peculiar to VMS. Perl handles its own command line
2781 redirection, and found a lone '>' at the end of the command line,
2782 so it doesn't know where you wanted to redirect stdout.
2783 No output file after > or >> on command line
2785 (F) An error peculiar to VMS. Perl handles its own command line
2786 redirection, and found a '>' or a '>>' on the command line, but
2787 can't find the name of the file to which to write data destined for
2788 stdout.
2789 No package name allowed for variable %s in "our"
2791 (F) Fully qualified variable names are not allowed in "our"
2792 declarations, because that doesn't make much sense under existing
2793 semantics. Such syntax is reserved for future extensions.
2794 No Perl script found in input
2796 (F) You called "perl -x", but no line was found in the file
2797 beginning with #! and containing the word "perl".
2798 No setregid available
2800 (F) Configure didn't find anything resembling the setregid() call
2801 for your system.
2802 No setreuid available
2804 (F) Configure didn't find anything resembling the setreuid() call
2805 for your system.
2806 No such class field "%s" in variable %s of type %s
2808 (F) You tried to access a key from a hash through the indicated
2809 typed variable but that key is not allowed by the package of the
2810 same type. The indicated package has restricted the set of allowed
2811 keys using the fields pragma.
2812 No such class %s
2814 (F) You provided a class qualifier in a "my", "our" or "state"
2815 declaration, but this class doesn't exist at this point in your
2816 program.
2817 No such hook: %s
2819 (F) You specified a signal hook that was not recognized by Perl.
2820 Currently, Perl accepts "__DIE__" and "__WARN__" as valid signal
2821 hooks.
2822 No such pipe open
2824 (P) An error peculiar to VMS. The internal routine my_pclose()
2825 tried to close a pipe which hadn't been opened. This should have
2826 been caught earlier as an attempt to close an unopened filehandle.
2827 No such signal: SIG%s
2829 (W signal) You specified a signal name as a subscript to %SIG that
2830 was not recognized. Say "kill -l" in your shell to see the valid
2831 signal names on your system.
2832 Not a CODE reference
2834 (F) Perl was trying to evaluate a reference to a code value (that
2835 is, a subroutine), but found a reference to something else instead.
2836 You can use the ref() function to find out what kind of ref it
2837 really was. See also perlref.
2838 Not a format reference
2840 (F) I'm not sure how you managed to generate a reference to an
2841 anonymous format, but this indicates you did, and that it didn't
2842 exist.
2843 Not a GLOB reference
2845 (F) Perl was trying to evaluate a reference to a "typeglob" (that
2846 is, a symbol table entry that looks like *foo), but found a
2847 reference to something else instead. You can use the ref()
2848 function to find out what kind of ref it really was. See perlref.
2849 Not a HASH reference
2851 (F) Perl was trying to evaluate a reference to a hash value, but
2852 found a reference to something else instead. You can use the ref()
2853 function to find out what kind of ref it really was. See perlref.
2854 Not an ARRAY reference
2856 (F) Perl was trying to evaluate a reference to an array value, but
2857 found a reference to something else instead. You can use the ref()
2858 function to find out what kind of ref it really was. See perlref.
2859 Not an unblessed ARRAY reference
2861 (F) You passed a reference to a blessed array to "push", "shift" or
2862 another array function. These only accept unblessed array
2863 references or arrays beginning explicitly with "@".
2864 Not a SCALAR reference
2866 (F) Perl was trying to evaluate a reference to a scalar value, but
2867 found a reference to something else instead. You can use the ref()
2868 function to find out what kind of ref it really was. See perlref.
2869 Not a subroutine reference
2871 (F) Perl was trying to evaluate a reference to a code value (that
2872 is, a subroutine), but found a reference to something else instead.
2873 You can use the ref() function to find out what kind of ref it
2874 really was. See also perlref.
2875 Not a subroutine reference in overload table
2877 (F) An attempt was made to specify an entry in an overloading table
2878 that doesn't somehow point to a valid subroutine. See overload.
2879 Not enough arguments for %s
2881 (F) The function requires more arguments than you specified.
2882 Not enough format arguments
2884 (W syntax) A format specified more picture fields than the next
2885 line supplied. See perlform.
2886 %s: not found
2888 (A) You've accidentally run your script through the Bourne shell
2889 instead of Perl. Check the #! line, or manually feed your script
2890 into Perl yourself.
2891 no UTC offset information; assuming local time is UTC
2893 (S) A warning peculiar to VMS. Perl was unable to find the local
2894 timezone offset, so it's assuming that local system time is
2895 equivalent to UTC. If it's not, define the logical name
2896 SYS$TIMEZONE_DIFFERENTIAL to translate to the number of seconds
2897 which need to be added to UTC to get local time.
2898 Non-octal character '%c'. Resolved as "%s"
2900 (W digit) In parsing an octal numeric constant, a character was
2901 unexpectedly encountered that isn't octal. The resulting value is
2902 as indicated.
2903 Non-string passed as bitmask
2905 (W misc) A number has been passed as a bitmask argument to
2906 select(). Use the vec() function to construct the file descriptor
2907 bitmasks for select. See "select" in perlfunc.
2908 Null filename used
2910 (F) You can't require the null filename, especially because on many
2911 machines that means the current directory! See "require" in
2912 perlfunc.
2913 NULL OP IN RUN
2915 (S debugging) Some internal routine called run() with a null opcode
2916 pointer.
2917 Null picture in formline
2919 (F) The first argument to formline must be a valid format picture
2920 specification. It was found to be empty, which probably means you
2921 supplied it an uninitialized value. See perlform.
2922 Null realloc
2924 (P) An attempt was made to realloc NULL.
2925 NULL regexp argument
2927 (P) The internal pattern matching routines blew it big time.
2928 NULL regexp parameter
2930 (P) The internal pattern matching routines are out of their gourd.
2931 Number too long
2933 (F) Perl limits the representation of decimal numbers in programs
2934 to about 250 characters. You've exceeded that length. Future
2935 versions of Perl are likely to eliminate this arbitrary limitation.
2936 In the meantime, try using scientific notation (e.g. "1e6" instead
2937 of "1_000_000").
2938 Number with no digits
2940 (F) Perl was looking for a number but found nothing that looked
2941 like a number. This happens, for example with "\o{}", with no
2942 number between the braces.
2943 Octal number > 037777777777 non-portable
2945 (W portable) The octal number you specified is larger than 2**32-1
2946 (4294967295) and therefore non-portable between systems. See
2947 perlport for more on portability concerns.
2948 Odd number of arguments for overload::constant
2950 (W overload) The call to overload::constant contained an odd number
2951 of arguments. The arguments should come in pairs.
2952 Odd number of elements in anonymous hash
2954 (W misc) You specified an odd number of elements to initialize a
2955 hash, which is odd, because hashes come in key/value pairs.
2956 Odd number of elements in hash assignment
2958 (W misc) You specified an odd number of elements to initialize a
2959 hash, which is odd, because hashes come in key/value pairs.
2960 Offset outside string
2962 (F)(W layer) You tried to do a read/write/send/recv/seek operation
2963 with an offset pointing outside the buffer. This is difficult to
2964 imagine. The sole exceptions to this are that zero padding will
2965 take place when going past the end of the string when either
2966 "sysread()"ing a file, or when seeking past the end of a scalar
2967 opened for I/O (in anticipation of future reads and to imitate the
2968 behaviour with real files).
2969 %s() on unopened %s
2971 (W unopened) An I/O operation was attempted on a filehandle that
2972 was never initialized. You need to do an open(), a sysopen(), or a
2973 socket() call, or call a constructor from the FileHandle package.
2974 -%s on unopened filehandle %s
2976 (W unopened) You tried to invoke a file test operator on a
2977 filehandle that isn't open. Check your control flow. See also
2978 "-X" in perlfunc.
2979 oops: oopsAV
2981 (S internal) An internal warning that the grammar is screwed up.
2982 oops: oopsHV
2984 (S internal) An internal warning that the grammar is screwed up.
2985 Opening dirhandle %s also as a file
2987 (W io, deprecated) You used open() to associate a filehandle to a
2988 symbol (glob or scalar) that already holds a dirhandle. Although
2989 legal, this idiom might render your code confusing and is
2990 deprecated.
2991 Opening filehandle %s also as a directory
2993 (W io, deprecated) You used opendir() to associate a dirhandle to a
2994 symbol (glob or scalar) that already holds a filehandle. Although
2995 legal, this idiom might render your code confusing and is
2996 deprecated.
2997 Operation "%s": no method found, %s
2999 (F) An attempt was made to perform an overloaded operation for
3000 which no handler was defined. While some handlers can be
3001 autogenerated in terms of other handlers, there is no default
3002 handler for any operation, unless the "fallback" overloading key is
3003 specified to be true. See overload.
3004 Operation "%s" returns its argument for non-Unicode code point 0x%X
3006 (W utf8, non_unicode) You performed an operation requiring Unicode
3007 semantics on a code point that is not in Unicode, so what it should
3008 do is not defined. Perl has chosen to have it do nothing, and warn
3009 you.
3010 If the operation shown is "ToFold", it means that case-insensitive
3012 matching in a regular expression was done on the code point.
3013 If you know what you are doing you can turn off this warning by "no
3015 warnings 'non_unicode';".
3016 Operation "%s" returns its argument for UTF-16 surrogate U+%X
3018 (W utf8, surrogate) You performed an operation requiring Unicode
3019 semantics on a Unicode surrogate. Unicode frowns upon the use of
3020 surrogates for anything but storing strings in UTF-16, but
3021 semantics are (reluctantly) defined for the surrogates, and they
3022 are to do nothing for this operation. Because the use of
3023 surrogates can be dangerous, Perl warns.
3024 If the operation shown is "ToFold", it means that case-insensitive
3026 matching in a regular expression was done on the code point.
3027 If you know what you are doing you can turn off this warning by "no
3029 warnings 'surrogate';".
3030 Operator or semicolon missing before %s
3032 (S ambiguous) You used a variable or subroutine call where the
3033 parser was expecting an operator. The parser has assumed you
3034 really meant to use an operator, but this is highly likely to be
3035 incorrect. For example, if you say "*foo *foo" it will be
3036 interpreted as if you said "*foo * 'foo'".
3037 "our" variable %s redeclared
3039 (W misc) You seem to have already declared the same global once
3040 before in the current lexical scope.
3041 Out of memory!
3043 (X) The malloc() function returned 0, indicating there was
3044 insufficient remaining memory (or virtual memory) to satisfy the
3045 request. Perl has no option but to exit immediately.
3046 At least in Unix you may be able to get past this by increasing
3048 your process datasize limits: in csh/tcsh use "limit" and "limit
3049 datasize n" (where "n" is the number of kilobytes) to check the
3050 current limits and change them, and in ksh/bash/zsh use "ulimit -a"
3051 and "ulimit -d n", respectively.
3052 Out of memory during %s extend
3054 (X) An attempt was made to extend an array, a list, or a string
3055 beyond the largest possible memory allocation.
3056 Out of memory during "large" request for %s
3058 (F) The malloc() function returned 0, indicating there was
3059 insufficient remaining memory (or virtual memory) to satisfy the
3060 request. However, the request was judged large enough (compile-
3061 time default is 64K), so a possibility to shut down by trapping
3062 this error is granted.
3063 Out of memory during request for %s
3065 (X)(F) The malloc() function returned 0, indicating there was
3066 insufficient remaining memory (or virtual memory) to satisfy the
3067 request.
3068 The request was judged to be small, so the possibility to trap it
3070 depends on the way perl was compiled. By default it is not
3071 trappable. However, if compiled for this, Perl may use the
3072 contents of $^M as an emergency pool after die()ing with this
3073 message. In this case the error is trappable once, and the error
3074 message will include the line and file where the failed request
3075 happened.
3076 Out of memory during ridiculously large request
3078 (F) You can't allocate more than 2^31+"small amount" bytes. This
3079 error is most likely to be caused by a typo in the Perl program.
3080 e.g., $arr[time] instead of $arr[$time].
3081 Out of memory for yacc stack
3083 (F) The yacc parser wanted to grow its stack so it could continue
3084 parsing, but realloc() wouldn't give it more memory, virtual or
3085 otherwise.
3086 '.' outside of string in pack
3088 (F) The argument to a '.' in your template tried to move the
3089 working position to before the start of the packed string being
3090 built.
3091 '@' outside of string in unpack
3093 (F) You had a template that specified an absolute position outside
3094 the string being unpacked. See "pack" in perlfunc.
3095 '@' outside of string with malformed UTF-8 in unpack
3097 (F) You had a template that specified an absolute position outside
3098 the string being unpacked. The string being unpacked was also
3099 invalid UTF-8. See "pack" in perlfunc.
3100 overload arg '%s' is invalid
3102 (W overload) The overload pragma was passed an argument it did not
3103 recognize. Did you mistype an operator?
3104 Overloaded dereference did not return a reference
3106 (F) An object with an overloaded dereference operator was
3107 dereferenced, but the overloaded operation did not return a
3108 reference. See overload.
3109 Overloaded qr did not return a REGEXP
3111 (F) An object with a "qr" overload was used as part of a match, but
3112 the overloaded operation didn't return a compiled regexp. See
3113 overload.
3114 %s package attribute may clash with future reserved word: %s
3116 (W reserved) A lowercase attribute name was used that had a
3117 package-specific handler. That name might have a meaning to Perl
3118 itself some day, even though it doesn't yet. Perhaps you should
3119 use a mixed-case attribute name, instead. See attributes.
3120 pack/unpack repeat count overflow
3122 (F) You can't specify a repeat count so large that it overflows
3123 your signed integers. See "pack" in perlfunc.
3124 page overflow
3126 (W io) A single call to write() produced more lines than can fit on
3127 a page. See perlform.
3128 panic: %s
3130 (P) An internal error.
3131 panic: attempt to call %s in %s
3133 (P) One of the file test operators entered a code branch that calls
3134 an ACL related-function, but that function is not available on this
3135 platform. Earlier checks mean that it should not be possible to
3136 enter this branch on this platform.
3137 panic: ck_grep, type=%u
3139 (P) Failed an internal consistency check trying to compile a grep.
3140 panic: ck_split, type=%u
3142 (P) Failed an internal consistency check trying to compile a split.
3143 panic: corrupt saved stack index %ld
3145 (P) The savestack was requested to restore more localized values
3146 than there are in the savestack.
3147 panic: del_backref
3149 (P) Failed an internal consistency check while trying to reset a
3150 weak reference.
3151 panic: die %s
3153 (P) We popped the context stack to an eval context, and then
3154 discovered it wasn't an eval context.
3155 panic: do_subst
3157 (P) The internal pp_subst() routine was called with invalid
3158 operational data.
3159 panic: do_trans_%s
3161 (P) The internal do_trans routines were called with invalid
3162 operational data.
3163 panic: fold_constants JMPENV_PUSH returned %d
3165 (P) While attempting folding constants an exception other than an
3166 "eval" failure was caught.
3167 panic: frexp
3169 (P) The library function frexp() failed, making printf("%f")
3170 impossible.
3171 panic: goto, type=%u, ix=%ld
3173 (P) We popped the context stack to a context with the specified
3174 label, and then discovered it wasn't a context we know how to do a
3175 goto in.
3176 panic: gp_free failed to free glob pointer
3178 (P) The internal routine used to clear a typeglob's entries tried
3179 repeatedly, but each time something re-created entries in the glob.
3180 Most likely the glob contains an object with a reference back to
3181 the glob and a destructor that adds a new object to the glob.
3182 panic: INTERPCASEMOD, %s
3184 (P) The lexer got into a bad state at a case modifier.
3185 panic: INTERPCONCAT, %s
3187 (P) The lexer got into a bad state parsing a string with brackets.
3188 panic: kid popen errno read
3190 (F) forked child returned an incomprehensible message about its
3191 errno.
3192 panic: last, type=%u
3194 (P) We popped the context stack to a block context, and then
3195 discovered it wasn't a block context.
3196 panic: leave_scope clearsv
3198 (P) A writable lexical variable became read-only somehow within the
3199 scope.
3200 panic: leave_scope inconsistency %u
3202 (P) The savestack probably got out of sync. At least, there was an
3203 invalid enum on the top of it.
3204 panic: magic_killbackrefs
3206 (P) Failed an internal consistency check while trying to reset all
3207 weak references to an object.
3208 panic: malloc, %s
3210 (P) Something requested a negative number of bytes of malloc.
3211 panic: memory wrap
3213 (P) Something tried to allocate more memory than possible.
3214 panic: pad_alloc, %p!=%p
3216 (P) The compiler got confused about which scratch pad it was
3217 allocating and freeing temporaries and lexicals from.
3218 panic: pad_free curpad, %p!=%p
3220 (P) The compiler got confused about which scratch pad it was
3221 allocating and freeing temporaries and lexicals from.
3222 panic: pad_free po
3224 (P) An invalid scratch pad offset was detected internally.
3225 panic: pad_reset curpad, %p!=%p
3227 (P) The compiler got confused about which scratch pad it was
3228 allocating and freeing temporaries and lexicals from.
3229 panic: pad_sv po
3231 (P) An invalid scratch pad offset was detected internally.
3232 panic: pad_swipe curpad, %p!=%p
3234 (P) The compiler got confused about which scratch pad it was
3235 allocating and freeing temporaries and lexicals from.
3236 panic: pad_swipe po
3238 (P) An invalid scratch pad offset was detected internally.
3239 panic: pp_iter, type=%u
3241 (P) The foreach iterator got called in a non-loop context frame.
3242 panic: pp_match%s
3244 (P) The internal pp_match() routine was called with invalid
3245 operational data.
3246 panic: pp_split, pm=%p, s=%p
3248 (P) Something terrible went wrong in setting up for the split.
3249 panic: realloc, %s
3251 (P) Something requested a negative number of bytes of realloc.
3252 panic: reference miscount on nsv in sv_replace() (%d != 1)
3254 (P) The internal sv_replace() function was handed a new SV with a
3255 reference count other than 1.
3256 panic: restartop in %s
3258 (P) Some internal routine requested a goto (or something like it),
3259 and didn't supply the destination.
3260 panic: return, type=%u
3262 (P) We popped the context stack to a subroutine or eval context,
3263 and then discovered it wasn't a subroutine or eval context.
3264 panic: scan_num, %s
3266 (P) scan_num() got called on something that wasn't a number.
3267 panic: sv_chop %s
3269 (P) The sv_chop() routine was passed a position that is not within
3270 the scalar's string buffer.
3271 panic: sv_insert, midend=%p, bigend=%p
3273 (P) The sv_insert() routine was told to remove more string than
3274 there was string.
3275 panic: strxfrm() gets absurd - a => %u, ab => %u
3277 (P) The interpreter's sanity check of the C function strxfrm()
3278 failed. In your current locale the returned transformation of the
3279 string "ab" is shorter than that of the string "a", which makes no
3280 sense.
3281 panic: top_env
3283 (P) The compiler attempted to do a goto, or something weird like
3284 that.
3285 panic: unimplemented op %s (#%d) called
3287 (P) The compiler is screwed up and attempted to use an op that
3288 isn't permitted at run time.
3289 panic: utf16_to_utf8: odd bytelen
3291 (P) Something tried to call utf16_to_utf8 with an odd (as opposed
3292 to even) byte length.
3293 panic: utf16_to_utf8_reversed: odd bytelen
3295 (P) Something tried to call utf16_to_utf8_reversed with an odd (as
3296 opposed to even) byte length.
3297 panic: yylex, %s
3299 (P) The lexer got into a bad state while processing a case
3300 modifier.
3301 Parsing code internal error (%s)
3303 (F) Parsing code supplied by an extension violated the parser's API
3304 in a detectable way.
3305 Pattern subroutine nesting without pos change exceeded limit in regex;
3307 marked by <-- HERE in m/%s/
3308 (F) You used a pattern that uses too many nested subpattern calls
3309 without consuming any text. Restructure the pattern so text is
3310 consumed before the nesting limit is exceeded.
3311 The <-- HERE shows in the regular expression about where the
3313 problem was discovered.
3314 Parentheses missing around "%s" list
3316 (W parenthesis) You said something like
3317 my $foo, $bar = @_;
3319 when you meant
3321 my ($foo, $bar) = @_;
3323 Remember that "my", "our", "local" and "state" bind tighter than
3325 comma.
3326 "-p" destination: %s
3328 (F) An error occurred during the implicit output invoked by the
3329 "-p" command-line switch. (This output goes to STDOUT unless
3330 you've redirected it with select().)
3331 (perhaps you forgot to load "%s"?)
3333 (F) This is an educated guess made in conjunction with the message
3334 "Can't locate object method \"%s\" via package \"%s\"". It often
3335 means that a method requires a package that has not been loaded.
3336 Perl folding rules are not up-to-date for 0x%x; please use the perlbug
3338 utility to report
3339 (W regex, deprecated) You used a regular expression with case-
3340 insensitive matching, and there is a bug in Perl in which the
3341 built-in regular expression folding rules are not accurate. This
3342 may lead to incorrect results. Please report this as a bug using
3343 the "perlbug" utility. (This message is marked deprecated, so that
3344 it by default will be turned-on.)
3345 Perl_my_%s() not available
3347 (F) Your platform has very uncommon byte-order and integer size, so
3348 it was not possible to set up some or all fixed-width byte-order
3349 conversion functions. This is only a problem when you're using the
3350 '<' or '>' modifiers in (un)pack templates. See "pack" in
3351 perlfunc.
3352 Perl %s required (did you mean %s?)--this is only %s, stopped
3354 (F) The code you are trying to run has asked for a newer version of
3355 Perl than you are running. Perhaps "use 5.10" was written instead
3356 of "use 5.010" or "use v5.10". Without the leading "v", the number
3357 is interpreted as a decimal, with every three digits after the
3358 decimal point representing a part of the version number. So 5.10
3359 is equivalent to v5.100.
3360 Perl %s required--this is only version %s, stopped
3362 (F) The module in question uses features of a version of Perl more
3363 recent than the currently running version. How long has it been
3364 since you upgraded, anyway? See "require" in perlfunc.
3365 PERL_SH_DIR too long
3367 (F) An error peculiar to OS/2. PERL_SH_DIR is the directory to
3368 find the "sh"-shell in. See "PERL_SH_DIR" in perlos2.
3369 PERL_SIGNALS illegal: "%s"
3371 See "PERL_SIGNALS" in perlrun for legal values.
3372 Perls since %s too modern--this is %s, stopped
3374 (F) The code you are trying to run claims it will not run on the
3375 version of Perl you are using because it is too new. Maybe the
3376 code needs to be updated, or maybe it is simply wrong and the
3377 version check should just be removed.
3378 perl: warning: Setting locale failed.
3380 (S) The whole warning message will look something like:
3381 perl: warning: Setting locale failed.
3383 perl: warning: Please check that your locale settings:
3384 LC_ALL = "En_US",
3385 LANG = (unset)
3386 are supported and installed on your system.
3387 perl: warning: Falling back to the standard locale ("C").
3388 Exactly what were the failed locale settings varies. In the above
3390 the settings were that the LC_ALL was "En_US" and the LANG had no
3391 value. This error means that Perl detected that you and/or your
3392 operating system supplier and/or system administrator have set up
3393 the so-called locale system but Perl could not use those settings.
3394 This was not dead serious, fortunately: there is a "default locale"
3395 called "C" that Perl can and will use, and the script will be run.
3396 Before you really fix the problem, however, you will get the same
3397 error message each time you run Perl. How to really fix the
3398 problem can be found in perllocale section LOCALE PROBLEMS.
3399 pid %x not a child
3401 (W exec) A warning peculiar to VMS. Waitpid() was asked to wait
3402 for a process which isn't a subprocess of the current process.
3403 While this is fine from VMS' perspective, it's probably not what
3404 you intended.
3405 'P' must have an explicit size in unpack
3407 (F) The unpack format P must have an explicit size, not "*".
3408 POSIX class [:%s:] unknown in regex; marked by <-- HERE in m/%s/
3410 (F) The class in the character class [: :] syntax is unknown. The
3411 <-- HERE shows in the regular expression about where the problem
3412 was discovered. Note that the POSIX character classes do not have
3413 the "is" prefix the corresponding C interfaces have: in other
3414 words, it's "[[:print:]]", not "isprint". See perlre.
3415 POSIX getpgrp can't take an argument
3417 (F) Your system has POSIX getpgrp(), which takes no argument,
3418 unlike the BSD version, which takes a pid.
3419 POSIX syntax [%s] belongs inside character classes in regex; marked by
3421 <-- HERE in m/%s/
3422 (W regexp) The character class constructs [: :], [= =], and [. .]
3423 go inside character classes, the [] are part of the construct, for
3424 example: /[012[:alpha:]345]/. Note that [= =] and [. .] are not
3425 currently implemented; they are simply placeholders for future
3426 extensions and will cause fatal errors. The <-- HERE shows in the
3427 regular expression about where the problem was discovered. See
3428 perlre.
3429 POSIX syntax [. .] is reserved for future extensions in regex; marked
3431 by <-- HERE in m/%s/
3432 (F regexp) Within regular expression character classes ([]) the
3433 syntax beginning with "[." and ending with ".]" is reserved for
3434 future extensions. If you need to represent those character
3435 sequences inside a regular expression character class, just quote
3436 the square brackets with the backslash: "\[." and ".\]". The <--
3437 HERE shows in the regular expression about where the problem was
3438 discovered. See perlre.
3439 POSIX syntax [= =] is reserved for future extensions in regex; marked
3441 by <-- HERE in m/%s/
3442 (F) Within regular expression character classes ([]) the syntax
3443 beginning with "[=" and ending with "=]" is reserved for future
3444 extensions. If you need to represent those character sequences
3445 inside a regular expression character class, just quote the square
3446 brackets with the backslash: "\[=" and "=\]". The <-- HERE shows
3447 in the regular expression about where the problem was discovered.
3448 See perlre.
3449 Possible attempt to put comments in qw() list
3451 (W qw) qw() lists contain items separated by whitespace; as with
3452 literal strings, comment characters are not ignored, but are
3453 instead treated as literal data. (You may have used different
3454 delimiters than the parentheses shown here; braces are also
3455 frequently used.)
3456 You probably wrote something like this:
3458 @list = qw(
3460 a # a comment
3461 b # another comment
3462 );
3463 when you should have written this:
3465 @list = qw(
3467 a
3468 b
3469 );
3470 If you really want comments, build your list the old-fashioned way,
3472 with quotes and commas:
3473 @list = (
3475 'a', # a comment
3476 'b', # another comment
3477 );
3478 Possible attempt to separate words with commas
3480 (W qw) qw() lists contain items separated by whitespace; therefore
3481 commas aren't needed to separate the items. (You may have used
3482 different delimiters than the parentheses shown here; braces are
3483 also frequently used.)
3484 You probably wrote something like this:
3486 qw! a, b, c !;
3488 which puts literal commas into some of the list items. Write it
3490 without commas if you don't want them to appear in your data:
3491 qw! a b c !;
3493 Possible memory corruption: %s overflowed 3rd argument
3495 (F) An ioctl() or fcntl() returned more than Perl was bargaining
3496 for. Perl guesses a reasonable buffer size, but puts a sentinel
3497 byte at the end of the buffer just in case. This sentinel byte got
3498 clobbered, and Perl assumes that memory is now corrupted. See
3499 "ioctl" in perlfunc.
3500 Possible precedence problem on bitwise %c operator
3502 (W precedence) Your program uses a bitwise logical operator in
3503 conjunction with a numeric comparison operator, like this :
3504 if ($x & $y == 0) { ... }
3506 This expression is actually equivalent to "$x & ($y == 0)", due to
3508 the higher precedence of "==". This is probably not what you want.
3509 (If you really meant to write this, disable the warning, or,
3510 better, put the parentheses explicitly and write "$x & ($y == 0)").
3511 Possible unintended interpolation of $\ in regex
3513 (W ambiguous) You said something like "m/$\/" in a regex. The
3514 regex "m/foo$\s+bar/m" translates to: match the word 'foo', the
3515 output record separator (see "$\" in perlvar) and the letter 's'
3516 (one time or more) followed by the word 'bar'.
3517 If this is what you intended then you can silence the warning by
3519 using "m/${\}/" (for example: "m/foo${\}s+bar/").
3520 If instead you intended to match the word 'foo' at the end of the
3522 line followed by whitespace and the word 'bar' on the next line
3523 then you can use "m/$(?)\/" (for example: "m/foo$(?)\s+bar/").
3524 Possible unintended interpolation of %s in string
3526 (W ambiguous) You said something like '@foo' in a double-quoted
3527 string but there was no array @foo in scope at the time. If you
3528 wanted a literal @foo, then write it as \@foo; otherwise find out
3529 what happened to the array you apparently lost track of.
3530 Precedence problem: open %s should be open(%s)
3532 (S precedence) The old irregular construct
3533 open FOO || die;
3535 is now misinterpreted as
3537 open(FOO || die);
3539 because of the strict regularization of Perl 5's grammar into unary
3541 and list operators. (The old open was a little of both.) You must
3542 put parentheses around the filehandle, or use the new "or" operator
3543 instead of "||".
3544 Premature end of script headers
3546 See Server error.
3547 printf() on closed filehandle %s
3549 (W closed) The filehandle you're writing to got itself closed
3550 sometime before now. Check your control flow.
3551 print() on closed filehandle %s
3553 (W closed) The filehandle you're printing on got itself closed
3554 sometime before now. Check your control flow.
3555 Process terminated by SIG%s
3557 (W) This is a standard message issued by OS/2 applications, while
3558 *nix applications die in silence. It is considered a feature of
3559 the OS/2 port. One can easily disable this by appropriate
3560 sighandlers, see "Signals" in perlipc. See also "Process
3561 terminated by SIGTERM/SIGINT" in perlos2.
3562 Prototype after '%c' for %s : %s
3564 (W illegalproto) A character follows % or @ in a prototype. This
3565 is useless, since % and @ gobble the rest of the subroutine
3566 arguments.
3567 Prototype mismatch: %s vs %s
3569 (S prototype) The subroutine being declared or defined had
3570 previously been declared or defined with a different function
3571 prototype.
3572 Prototype not terminated
3574 (F) You've omitted the closing parenthesis in a function prototype
3575 definition.
3576 \p{} uses Unicode rules, not locale rules
3578 (W) You compiled a regular expression that contained a Unicode
3579 property match ("\p" or "\P"), but the regular expression is also
3580 being told to use the run-time locale, not Unicode. Instead, use a
3581 POSIX character class, which should know about the locale's rules.
3582 (See "POSIX Character Classes" in perlrecharclass.)
3583 Even if the run-time locale is ISO 8859-1 (Latin1), which is a
3585 subset of Unicode, some properties will give results that are not
3586 valid for that subset.
3587 Here are a couple of examples to help you see what's going on. If
3589 the locale is ISO 8859-7, the character at code point 0xD7 is the
3590 "GREEK CAPITAL LETTER CHI". But in Unicode that code point means
3591 the "MULTIPLICATION SIGN" instead, and "\p" always uses the Unicode
3592 meaning. That means that "\p{Alpha}" won't match, but
3593 "[[:alpha:]]" should. Only in the Latin1 locale are all the
3594 characters in the same positions as they are in Unicode. But, even
3595 here, some properties give incorrect results. An example is
3596 "\p{Changes_When_Uppercased}" which is true for "LATIN SMALL LETTER
3597 Y WITH DIAERESIS", but since the upper case of that character is
3598 not in Latin1, in that locale it doesn't change when upper cased.
3599 Quantifier follows nothing in regex; marked by <-- HERE in m/%s/
3601 (F) You started a regular expression with a quantifier. Backslash
3602 it if you meant it literally. The <-- HERE shows in the regular
3603 expression about where the problem was discovered. See perlre.
3604 Quantifier in {,} bigger than %d in regex; marked by <-- HERE in m/%s/
3606 (F) There is currently a limit to the size of the min and max
3607 values of the {min,max} construct. The <-- HERE shows in the
3608 regular expression about where the problem was discovered. See
3609 perlre.
3610 Quantifier unexpected on zero-length expression; marked by <-- HERE in
3612 m/%s/
3613 (W regexp) You applied a regular expression quantifier in a place
3614 where it makes no sense, such as on a zero-width assertion. Try
3615 putting the quantifier inside the assertion instead. For example,
3616 the way to match "abc" provided that it is followed by three
3617 repetitions of "xyz" is "/abc(?=(?:xyz){3})/", not
3618 "/abc(?=xyz){3}/".
3619 The <-- HERE shows in the regular expression about where the
3621 problem was discovered.
3622 Range iterator outside integer range
3624 (F) One (or both) of the numeric arguments to the range operator
3625 ".." are outside the range which can be represented by integers
3626 internally. One possible workaround is to force Perl to use
3627 magical string increment by prepending "0" to your numbers.
3628 readdir() attempted on invalid dirhandle %s
3630 (W io) The dirhandle you're reading from is either closed or not
3631 really a dirhandle. Check your control flow.
3632 readline() on closed filehandle %s
3634 (W closed) The filehandle you're reading from got itself closed
3635 sometime before now. Check your control flow.
3636 read() on closed filehandle %s
3638 (W closed) You tried to read from a closed filehandle.
3639 read() on unopened filehandle %s
3641 (W unopened) You tried to read from a filehandle that was never
3642 opened.
3643 Reallocation too large: %x
3645 (F) You can't allocate more than 64K on an MS-DOS machine.
3646 realloc() of freed memory ignored
3648 (S malloc) An internal routine called realloc() on something that
3649 had already been freed.
3650 Recompile perl with -DDEBUGGING to use -D switch
3652 (F debugging) You can't use the -D option unless the code to
3653 produce the desired output is compiled into Perl, which entails
3654 some overhead, which is why it's currently left out of your copy.
3655 Recursive call to Perl_load_module in PerlIO_find_layer
3657 (P) It is currently not permitted to load modules when creating a
3658 filehandle inside an %INC hook. This can happen with "open my $fh,
3659 '<', \$scalar", which implicitly loads PerlIO::scalar. Try loading
3660 PerlIO::scalar explicitly first.
3661 Recursive inheritance detected in package '%s'
3663 (F) While calculating the method resolution order (MRO) of a
3664 package, Perl believes it found an infinite loop in the @ISA
3665 hierarchy. This is a crude check that bails out after 100 levels
3666 of @ISA depth.
3667 refcnt_dec: fd %d%s
3669 refcnt: fd %d%s
3670 refcnt_inc: fd %d%s
3671 (P) Perl's I/O implementation failed an internal consistency check.
3672 If you see this message, something is very wrong.
3673 Reference found where even-sized list expected
3675 (W misc) You gave a single reference where Perl was expecting a
3676 list with an even number of elements (for assignment to a hash).
3677 This usually means that you used the anon hash constructor when you
3678 meant to use parens. In any case, a hash requires key/value pairs.
3679 %hash = { one => 1, two => 2, }; # WRONG
3681 %hash = [ qw/ an anon array / ]; # WRONG
3682 %hash = ( one => 1, two => 2, ); # right
3683 %hash = qw( one 1 two 2 ); # also fine
3684 Reference is already weak
3686 (W misc) You have attempted to weaken a reference that is already
3687 weak. Doing so has no effect.
3688 Reference to invalid group 0
3690 (F) You used "\g0" or similar in a regular expression. You may
3691 refer to capturing parentheses only with strictly positive integers
3692 (normal backreferences) or with strictly negative integers
3693 (relative backreferences). Using 0 does not make sense.
3694 Reference to nonexistent group in regex; marked by <-- HERE in m/%s/
3696 (F) You used something like "\7" in your regular expression, but
3697 there are not at least seven sets of capturing parentheses in the
3698 expression. If you wanted to have the character with ordinal 7
3699 inserted into the regular expression, prepend zeroes to make it
3700 three digits long: "\007"
3701 The <-- HERE shows in the regular expression about where the
3703 problem was discovered.
3704 Reference to nonexistent named group in regex; marked by <-- HERE in
3706 m/%s/
3707 (F) You used something like "\k'NAME'" or "\k<NAME>" in your
3708 regular expression, but there is no corresponding named capturing
3709 parentheses such as "(?'NAME'...)" or "(?<NAME>...)". Check if the
3710 name has been spelled correctly both in the backreference and the
3711 declaration.
3712 The <-- HERE shows in the regular expression about where the
3714 problem was discovered.
3715 Reference to nonexistent or unclosed group in regex; marked by <-- HERE
3717 in m/%s/
3718 (F) You used something like "\g{-7}" in your regular expression,
3719 but there are not at least seven sets of closed capturing
3720 parentheses in the expression before where the "\g{-7}" was
3721 located.
3722 The <-- HERE shows in the regular expression about where the
3724 problem was discovered.
3725 regexp memory corruption
3727 (P) The regular expression engine got confused by what the regular
3728 expression compiler gave it.
3729 Regexp modifier "/%c" may appear a maximum of twice
3731 Regexp modifier "/%c" may not appear twice
3732 (F syntax, regexp) The regular expression pattern had too many
3733 occurrences of the specified modifier. Remove the extraneous ones.
3734 Regexp modifier "%c" may not appear after the "-"
3736 (F regexp) Turning off the given modifier has the side effect of
3737 turning on another one. Perl currently doesn't allow this. Reword
3738 the regular expression to use the modifier you want to turn on (and
3739 place it before the minus), instead of the one you want to turn
3740 off.
3741 Regexp modifiers "/%c" and "/%c" are mutually exclusive
3743 (F syntax, regexp) The regular expression pattern had more than one
3744 of these mutually exclusive modifiers. Retain only the modifier
3745 that is supposed to be there.
3746 Regexp out of space
3748 (P) A "can't happen" error, because safemalloc() should have caught
3749 it earlier.
3750 Repeated format line will never terminate (~~ and @# incompatible)
3752 (F) Your format contains the ~~ repeat-until-blank sequence and a
3753 numeric field that will never go blank so that the repetition never
3754 terminates. You might use ^# instead. See perlform.
3755 Replacement list is longer than search list
3757 (W misc) You have used a replacement list that is longer than the
3758 search list. So the additional elements in the replacement list
3759 are meaningless.
3760 Reversed %s= operator
3762 (W syntax) You wrote your assignment operator backwards. The =
3763 must always come last, to avoid ambiguity with subsequent unary
3764 operators.
3765 rewinddir() attempted on invalid dirhandle %s
3767 (W io) The dirhandle you tried to do a rewinddir() on is either
3768 closed or not really a dirhandle. Check your control flow.
3769 Scalars leaked: %d
3771 (P) Something went wrong in Perl's internal bookkeeping of scalars:
3772 not all scalar variables were deallocated by the time Perl exited.
3773 What this usually indicates is a memory leak, which is of course
3774 bad, especially if the Perl program is intended to be long-running.
3775 Scalar value @%s[%s] better written as $%s[%s]
3777 (W syntax) You've used an array slice (indicated by @) to select a
3778 single element of an array. Generally it's better to ask for a
3779 scalar value (indicated by $). The difference is that $foo[&bar]
3780 always behaves like a scalar, both when assigning to it and when
3781 evaluating its argument, while @foo[&bar] behaves like a list when
3782 you assign to it, and provides a list context to its subscript,
3783 which can do weird things if you're expecting only one subscript.
3784 On the other hand, if you were actually hoping to treat the array
3786 element as a list, you need to look into how references work,
3787 because Perl will not magically convert between scalars and lists
3788 for you. See perlref.
3789 Scalar value @%s{%s} better written as $%s{%s}
3791 (W syntax) You've used a hash slice (indicated by @) to select a
3792 single element of a hash. Generally it's better to ask for a
3793 scalar value (indicated by $). The difference is that $foo{&bar}
3794 always behaves like a scalar, both when assigning to it and when
3795 evaluating its argument, while @foo{&bar} behaves like a list when
3796 you assign to it, and provides a list context to its subscript,
3797 which can do weird things if you're expecting only one subscript.
3798 On the other hand, if you were actually hoping to treat the hash
3800 element as a list, you need to look into how references work,
3801 because Perl will not magically convert between scalars and lists
3802 for you. See perlref.
3803 Search pattern not terminated
3805 (F) The lexer couldn't find the final delimiter of a // or m{}
3806 construct. Remember that bracketing delimiters count nesting
3807 level. Missing the leading "$" from a variable $m may cause this
3808 error.
3809 Note that since Perl 5.9.0 a // can also be the defined-or
3811 construct, not just the empty search pattern. Therefore code
3812 written in Perl 5.9.0 or later that uses the // as the defined-or
3813 can be misparsed by pre-5.9.0 Perls as a non-terminated search
3814 pattern.
3815 Search pattern not terminated or ternary operator parsed as search
3817 pattern
3818 (F) The lexer couldn't find the final delimiter of a "?PATTERN?"
3819 construct.
3820 The question mark is also used as part of the ternary operator (as
3822 in "foo ? 0 : 1") leading to some ambiguous constructions being
3823 wrongly parsed. One way to disambiguate the parsing is to put
3824 parentheses around the conditional expression, i.e. "(foo) ? 0 :
3825 1".
3826 seekdir() attempted on invalid dirhandle %s
3828 (W io) The dirhandle you are doing a seekdir() on is either closed
3829 or not really a dirhandle. Check your control flow.
3830 %sseek() on unopened filehandle
3832 (W unopened) You tried to use the seek() or sysseek() function on a
3833 filehandle that was either never opened or has since been closed.
3834 select not implemented
3836 (F) This machine doesn't implement the select() system call.
3837 Self-ties of arrays and hashes are not supported
3839 (F) Self-ties are of arrays and hashes are not supported in the
3840 current implementation.
3841 Semicolon seems to be missing
3843 (W semicolon) A nearby syntax error was probably caused by a
3844 missing semicolon, or possibly some other missing operator, such as
3845 a comma.
3846 semi-panic: attempt to dup freed string
3848 (S internal) The internal newSVsv() routine was called to duplicate
3849 a scalar that had previously been marked as free.
3850 sem%s not implemented
3852 (F) You don't have System V semaphore IPC on your system.
3853 send() on closed socket %s
3855 (W closed) The socket you're sending to got itself closed sometime
3856 before now. Check your control flow.
3857 Sequence (? incomplete in regex; marked by <-- HERE in m/%s/
3859 (F) A regular expression ended with an incomplete extension (?.
3860 The <-- HERE shows in the regular expression about where the
3861 problem was discovered. See perlre.
3862 Sequence (?%s...) not implemented in regex; marked by <-- HERE in m/%s/
3864 (F) A proposed regular expression extension has the character
3865 reserved but has not yet been written. The <-- HERE shows in the
3866 regular expression about where the problem was discovered. See
3867 perlre.
3868 Sequence (?%s...) not recognized in regex; marked by <-- HERE in m/%s/
3870 (F) You used a regular expression extension that doesn't make
3871 sense. The <-- HERE shows in the regular expression about where
3872 the problem was discovered. This happens when using the "(?^...)"
3873 construct to tell Perl to use the default regular expression
3874 modifiers, and you redundantly specify a default modifier. For
3875 other causes, see perlre.
3876 Sequence \%s... not terminated in regex; marked by <-- HERE in m/%s/
3878 (F) The regular expression expects a mandatory argument following
3879 the escape sequence and this has been omitted or incorrectly
3880 written.
3881 Sequence (?#... not terminated in regex; marked by <-- HERE in m/%s/
3883 (F) A regular expression comment must be terminated by a closing
3884 parenthesis. Embedded parentheses aren't allowed. The <-- HERE
3885 shows in the regular expression about where the problem was
3886 discovered. See perlre.
3887 Sequence (?{...}) not terminated or not {}-balanced in regex; marked by
3889 <-- HERE in m/%s/
3890 (F) If the contents of a (?{...}) clause contain braces, they must
3891 balance for Perl to detect the end of the clause properly. The <--
3892 HERE shows in the regular expression about where the problem was
3893 discovered. See perlre.
3894 500 Server error
3896 See Server error.
3897 Server error
3899 (A) This is the error message generally seen in a browser window
3900 when trying to run a CGI program (including SSI) over the web. The
3901 actual error text varies widely from server to server. The most
3902 frequently-seen variants are "500 Server error", "Method
3903 (something) not permitted", "Document contains no data", "Premature
3904 end of script headers", and "Did not produce a valid header".
3905 This is a CGI error, not a Perl error.
3907 You need to make sure your script is executable, is accessible by
3909 the user CGI is running the script under (which is probably not the
3910 user account you tested it under), does not rely on any environment
3911 variables (like PATH) from the user it isn't running under, and
3912 isn't in a location where the CGI server can't find it, basically,
3913 more or less. Please see the following for more information:
3914 http://www.perl.org/CGI_MetaFAQ.html
3916 http://www.htmlhelp.org/faq/cgifaq.html
3917 http://www.w3.org/Security/Faq/
3918 You should also look at perlfaq9.
3920 setegid() not implemented
3922 (F) You tried to assign to $), and your operating system doesn't
3923 support the setegid() system call (or equivalent), or at least
3924 Configure didn't think so.
3925 seteuid() not implemented
3927 (F) You tried to assign to $>, and your operating system doesn't
3928 support the seteuid() system call (or equivalent), or at least
3929 Configure didn't think so.
3930 setpgrp can't take arguments
3932 (F) Your system has the setpgrp() from BSD 4.2, which takes no
3933 arguments, unlike POSIX setpgid(), which takes a process ID and
3934 process group ID.
3935 setrgid() not implemented
3937 (F) You tried to assign to $(, and your operating system doesn't
3938 support the setrgid() system call (or equivalent), or at least
3939 Configure didn't think so.
3940 setruid() not implemented
3942 (F) You tried to assign to $<, and your operating system doesn't
3943 support the setruid() system call (or equivalent), or at least
3944 Configure didn't think so.
3945 setsockopt() on closed socket %s
3947 (W closed) You tried to set a socket option on a closed socket.
3948 Did you forget to check the return value of your socket() call?
3949 See "setsockopt" in perlfunc.
3950 shm%s not implemented
3952 (F) You don't have System V shared memory IPC on your system.
3953 !=~ should be !~
3955 (W syntax) The non-matching operator is !~, not !=~. !=~ will be
3956 interpreted as the != (numeric not equal) and ~ (1's complement)
3957 operators: probably not what you intended.
3958 <> should be quotes
3960 (F) You wrote "require <file>" when you should have written
3961 "require 'file'".
3962 /%s/ should probably be written as "%s"
3964 (W syntax) You have used a pattern where Perl expected to find a
3965 string, as in the first argument to "join". Perl will treat the
3966 true or false result of matching the pattern against $_ as the
3967 string, which is probably not what you had in mind.
3968 shutdown() on closed socket %s
3970 (W closed) You tried to do a shutdown on a closed socket. Seems a
3971 bit superfluous.
3972 SIG%s handler "%s" not defined
3974 (W signal) The signal handler named in %SIG doesn't, in fact,
3975 exist. Perhaps you put it into the wrong package?
3976 Smart matching a non-overloaded object breaks encapsulation
3978 (F) You should not use the "~~" operator on an object that does not
3979 overload it: Perl refuses to use the object's underlying structure
3980 for the smart match.
3981 sort is now a reserved word
3983 (F) An ancient error message that almost nobody ever runs into
3984 anymore. But before sort was a keyword, people sometimes used it
3985 as a filehandle.
3986 Sort subroutine didn't return single value
3988 (F) A sort comparison subroutine may not return a list value with
3989 more or less than one element. See "sort" in perlfunc.
3990 Source filters apply only to byte streams
3992 (F) You tried to activate a source filter (usually by loading a
3993 source filter module) within a string passed to "eval". This is
3994 not permitted under the "unicode_eval" feature. Consider using
3995 "evalbytes" instead. See feature.
3996 splice() offset past end of array
3998 (W misc) You attempted to specify an offset that was past the end
3999 of the array passed to splice(). Splicing will instead commence at
4000 the end of the array, rather than past it. If this isn't what you
4001 want, try explicitly pre-extending the array by assigning $#array =
4002 $offset. See "splice" in perlfunc.
4003 Split loop
4005 (P) The split was looping infinitely. (Obviously, a split
4006 shouldn't iterate more times than there are characters of input,
4007 which is what happened.) See "split" in perlfunc.
4008 Statement unlikely to be reached
4010 (W exec) You did an exec() with some statement after it other than
4011 a die(). This is almost always an error, because exec() never
4012 returns unless there was a failure. You probably wanted to use
4013 system() instead, which does return. To suppress this warning, put
4014 the exec() in a block by itself.
4015 "state" variable %s can't be in a package
4017 (F) Lexically scoped variables aren't in a package, so it doesn't
4018 make sense to try to declare one with a package qualifier on the
4019 front. Use local() if you want to localize a package variable.
4020 stat() on unopened filehandle %s
4022 (W unopened) You tried to use the stat() function on a filehandle
4023 that was either never opened or has since been closed.
4024 Stub found while resolving method "%s" overloading "%s" in package "%s"
4026 (P) Overloading resolution over @ISA tree may be broken by
4027 importation stubs. Stubs should never be implicitly created, but
4028 explicit calls to "can" may break this.
4029 Subroutine %s redefined
4031 (W redefine) You redefined a subroutine. To suppress this warning,
4032 say
4033 {
4035 no warnings 'redefine';
4036 eval "sub name { ... }";
4037 }
4038 Substitution loop
4040 (P) The substitution was looping infinitely. (Obviously, a
4041 substitution shouldn't iterate more times than there are characters
4042 of input, which is what happened.) See the discussion of
4043 substitution in "Regexp Quote-Like Operators" in perlop.
4044 Substitution pattern not terminated
4046 (F) The lexer couldn't find the interior delimiter of an s/// or
4047 s{}{} construct. Remember that bracketing delimiters count nesting
4048 level. Missing the leading "$" from variable $s may cause this
4049 error.
4050 Substitution replacement not terminated
4052 (F) The lexer couldn't find the final delimiter of an s/// or s{}{}
4053 construct. Remember that bracketing delimiters count nesting
4054 level. Missing the leading "$" from variable $s may cause this
4055 error.
4056 substr outside of string
4058 (W substr)(F) You tried to reference a substr() that pointed
4059 outside of a string. That is, the absolute value of the offset was
4060 larger than the length of the string. See "substr" in perlfunc.
4061 This warning is fatal if substr is used in an lvalue context (as
4062 the left hand side of an assignment or as a subroutine argument for
4063 example).
4064 sv_upgrade from type %d down to type %d
4066 (P) Perl tried to force the upgrade of an SV to a type which was
4067 actually inferior to its current type.
4068 Switch (?(condition)... contains too many branches in regex; marked by
4070 <-- HERE in m/%s/
4071 (F) A (?(condition)if-clause|else-clause) construct can have at
4072 most two branches (the if-clause and the else-clause). If you want
4073 one or both to contain alternation, such as using
4074 "this|that|other", enclose it in clustering parentheses:
4075 (?(condition)(?:this|that|other)|else-clause)
4077 The <-- HERE shows in the regular expression about where the
4079 problem was discovered. See perlre.
4080 Switch condition not recognized in regex; marked by <-- HERE in m/%s/
4082 (F) If the argument to the (?(...)if-clause|else-clause) construct
4083 is a number, it can be only a number. The <-- HERE shows in the
4084 regular expression about where the problem was discovered. See
4085 perlre.
4086 switching effective %s is not implemented
4088 (F) While under the "use filetest" pragma, we cannot switch the
4089 real and effective uids or gids.
4090 %s syntax OK
4092 (F) The final summary message when a "perl -c" succeeds.
4093 syntax error
4095 (F) Probably means you had a syntax error. Common reasons include:
4096 A keyword is misspelled.
4098 A semicolon is missing.
4099 A comma is missing.
4100 An opening or closing parenthesis is missing.
4101 An opening or closing brace is missing.
4102 A closing quote is missing.
4103 Often there will be another error message associated with the
4105 syntax error giving more information. (Sometimes it helps to turn
4106 on -w.) The error message itself often tells you where it was in
4107 the line when it decided to give up. Sometimes the actual error is
4108 several tokens before this, because Perl is good at understanding
4109 random input. Occasionally the line number may be misleading, and
4110 once in a blue moon the only way to figure out what's triggering
4111 the error is to call "perl -c" repeatedly, chopping away half the
4112 program each time to see if the error went away. Sort of the
4113 cybernetic version of 20 questions.
4114 syntax error at line %d: '%s' unexpected
4116 (A) You've accidentally run your script through the Bourne shell
4117 instead of Perl. Check the #! line, or manually feed your script
4118 into Perl yourself.
4119 syntax error in file %s at line %d, next 2 tokens "%s"
4121 (F) This error is likely to occur if you run a perl5 script through
4122 a perl4 interpreter, especially if the next 2 tokens are "use
4123 strict" or "my $var" or "our $var".
4124 sysread() on closed filehandle %s
4126 (W closed) You tried to read from a closed filehandle.
4127 sysread() on unopened filehandle %s
4129 (W unopened) You tried to read from a filehandle that was never
4130 opened.
4131 System V %s is not implemented on this machine
4133 (F) You tried to do something with a function beginning with "sem",
4134 "shm", or "msg" but that System V IPC is not implemented in your
4135 machine. In some machines the functionality can exist but be
4136 unconfigured. Consult your system support.
4137 syswrite() on closed filehandle %s
4139 (W closed) The filehandle you're writing to got itself closed
4140 sometime before now. Check your control flow.
4141 "-T" and "-B" not implemented on filehandles
4143 (F) Perl can't peek at the stdio buffer of filehandles when it
4144 doesn't know about your kind of stdio. You'll have to use a
4145 filename instead.
4146 Target of goto is too deeply nested
4148 (F) You tried to use "goto" to reach a label that was too deeply
4149 nested for Perl to reach. Perl is doing you a favor by refusing.
4150 telldir() attempted on invalid dirhandle %s
4152 (W io) The dirhandle you tried to telldir() is either closed or not
4153 really a dirhandle. Check your control flow.
4154 tell() on unopened filehandle
4156 (W unopened) You tried to use the tell() function on a filehandle
4157 that was either never opened or has since been closed.
4158 That use of $[ is unsupported
4160 (F) Assignment to $[ is now strictly circumscribed, and interpreted
4161 as a compiler directive. You may say only one of
4162 $[ = 0;
4164 $[ = 1;
4165 ...
4166 local $[ = 0;
4167 local $[ = 1;
4168 ...
4169 This is to prevent the problem of one module changing the array
4171 base out from under another module inadvertently. See "$[" in
4172 perlvar and arybase.
4173 The crypt() function is unimplemented due to excessive paranoia
4175 (F) Configure couldn't find the crypt() function on your machine,
4176 probably because your vendor didn't supply it, probably because
4177 they think the U.S. Government thinks it's a secret, or at least
4178 that they will continue to pretend that it is. And if you quote me
4179 on that, I will deny it.
4180 The %s function is unimplemented
4182 (F) The function indicated isn't implemented on this architecture,
4183 according to the probings of Configure.
4184 The stat preceding %s wasn't an lstat
4186 (F) It makes no sense to test the current stat buffer for symbolic
4187 linkhood if the last stat that wrote to the stat buffer already
4188 went past the symlink to get to the real file. Use an actual
4189 filename instead.
4190 The 'unique' attribute may only be applied to 'our' variables
4192 (F) This attribute was never supported on "my" or "sub"
4193 declarations.
4194 This Perl can't reset CRTL environ elements (%s)
4196 This Perl can't set CRTL environ elements (%s=%s)
4197 (W internal) Warnings peculiar to VMS. You tried to change or
4198 delete an element of the CRTL's internal environ array, but your
4199 copy of Perl wasn't built with a CRTL that contained the setenv()
4200 function. You'll need to rebuild Perl with a CRTL that does, or
4201 redefine PERL_ENV_TABLES (see perlvms) so that the environ array
4202 isn't the target of the change to %ENV which produced the warning.
4203 thread failed to start: %s
4205 (W threads)(S) The entry point function of threads->create() failed
4206 for some reason.
4207 times not implemented
4209 (F) Your version of the C library apparently doesn't do times(). I
4210 suspect you're not running on Unix.
4211 "-T" is on the #! line, it must also be used on the command line
4213 (X) The #! line (or local equivalent) in a Perl script contains the
4214 -T option (or the -t option), but Perl was not invoked with -T in
4215 its command line. This is an error because, by the time Perl
4216 discovers a -T in a script, it's too late to properly taint
4217 everything from the environment. So Perl gives up.
4218 If the Perl script is being executed as a command using the #!
4220 mechanism (or its local equivalent), this error can usually be
4221 fixed by editing the #! line so that the -%c option is a part of
4222 Perl's first argument: e.g. change "perl -n -%c" to "perl -%c -n".
4223 If the Perl script is being executed as "perl scriptname", then the
4225 -%c option must appear on the command line: "perl -%c scriptname".
4226 To%s: illegal mapping '%s'
4228 (F) You tried to define a customized To-mapping for lc(), lcfirst,
4229 uc(), or ucfirst() (or their string-inlined versions), but you
4230 specified an illegal mapping. See "User-Defined Character
4231 Properties" in perlunicode.
4232 Too deeply nested ()-groups
4234 (F) Your template contains ()-groups with a ridiculously deep
4235 nesting level.
4236 Too few args to syscall
4238 (F) There has to be at least one argument to syscall() to specify
4239 the system call to call, silly dilly.
4240 Too late for "-%s" option
4242 (X) The #! line (or local equivalent) in a Perl script contains the
4243 -M, -m or -C option.
4244 In the case of -M and -m, this is an error because those options
4246 are not intended for use inside scripts. Use the "use" pragma
4247 instead.
4248 The -C option only works if it is specified on the command line as
4250 well (with the same sequence of letters or numbers following).
4251 Either specify this option on the command line, or, if your system
4252 supports it, make your script executable and run it directly
4253 instead of passing it to perl.
4254 Too late to run %s block
4256 (W void) A CHECK or INIT block is being defined during run time
4257 proper, when the opportunity to run them has already passed.
4258 Perhaps you are loading a file with "require" or "do" when you
4259 should be using "use" instead. Or perhaps you should put the
4260 "require" or "do" inside a BEGIN block.
4261 Too many args to syscall
4263 (F) Perl supports a maximum of only 14 args to syscall().
4264 Too many arguments for %s
4266 (F) The function requires fewer arguments than you specified.
4267 Too many )'s
4269 (A) You've accidentally run your script through csh instead of
4270 Perl. Check the #! line, or manually feed your script into Perl
4271 yourself.
4272 Too many ('s
4274 (A) You've accidentally run your script through csh instead of
4275 Perl. Check the #! line, or manually feed your script into Perl
4276 yourself.
4277 Trailing \ in regex m/%s/
4279 (F) The regular expression ends with an unbackslashed backslash.
4280 Backslash it. See perlre.
4281 Transliteration pattern not terminated
4283 (F) The lexer couldn't find the interior delimiter of a tr/// or
4284 tr[][] or y/// or y[][] construct. Missing the leading "$" from
4285 variables $tr or $y may cause this error.
4286 Transliteration replacement not terminated
4288 (F) The lexer couldn't find the final delimiter of a tr///, tr[][],
4289 y/// or y[][] construct.
4290 '%s' trapped by operation mask
4292 (F) You tried to use an operator from a Safe compartment in which
4293 it's disallowed. See Safe.
4294 truncate not implemented
4296 (F) Your machine doesn't implement a file truncation mechanism that
4297 Configure knows about.
4298 Type of arg %d to &CORE::%s must be %s
4300 (F) The subroutine in question in the CORE package requires its
4301 argument to be a hard reference to data of the specified type.
4302 Overloading is ignored, so a reference to an object that is not the
4303 specified type, but nonetheless has overloading to handle it, will
4304 still not be accepted.
4305 Type of arg %d to %s must be %s (not %s)
4307 (F) This function requires the argument in that position to be of a
4308 certain type. Arrays must be @NAME or "@{EXPR}". Hashes must be
4309 %NAME or "%{EXPR}". No implicit dereferencing is allowed--use the
4310 {EXPR} forms as an explicit dereference. See perlref.
4311 Type of argument to %s must be unblessed hashref or arrayref
4313 (F) You called "keys", "values" or "each" with a scalar argument
4314 that was not a reference to an unblessed hash or array.
4315 umask not implemented
4317 (F) Your machine doesn't implement the umask function and you tried
4318 to use it to restrict permissions for yourself (EXPR & 0700).
4319 Unable to create sub named "%s"
4321 (F) You attempted to create or access a subroutine with an illegal
4322 name.
4323 Unbalanced context: %d more PUSHes than POPs
4325 (W internal) The exit code detected an internal inconsistency in
4326 how many execution contexts were entered and left.
4327 Unbalanced saves: %d more saves than restores
4329 (W internal) The exit code detected an internal inconsistency in
4330 how many values were temporarily localized.
4331 Unbalanced scopes: %d more ENTERs than LEAVEs
4333 (W internal) The exit code detected an internal inconsistency in
4334 how many blocks were entered and left.
4335 Unbalanced string table refcount: (%d) for "%s"
4337 (W internal) On exit, Perl found some strings remaining in the
4338 shared string table used for copy on write and for hash keys. The
4339 entries should have been freed, so this indicates a bug somewhere.
4340 Unbalanced tmps: %d more allocs than frees
4342 (W internal) The exit code detected an internal inconsistency in
4343 how many mortal scalars were allocated and freed.
4344 Undefined format "%s" called
4346 (F) The format indicated doesn't seem to exist. Perhaps it's
4347 really in another package? See perlform.
4348 Undefined sort subroutine "%s" called
4350 (F) The sort comparison routine specified doesn't seem to exist.
4351 Perhaps it's in a different package? See "sort" in perlfunc.
4352 Undefined subroutine &%s called
4354 (F) The subroutine indicated hasn't been defined, or if it was, it
4355 has since been undefined.
4356 Undefined subroutine called
4358 (F) The anonymous subroutine you're trying to call hasn't been
4359 defined, or if it was, it has since been undefined.
4360 Undefined subroutine in sort
4362 (F) The sort comparison routine specified is declared but doesn't
4363 seem to have been defined yet. See "sort" in perlfunc.
4364 Undefined top format "%s" called
4366 (F) The format indicated doesn't seem to exist. Perhaps it's
4367 really in another package? See perlform.
4368 Undefined value assigned to typeglob
4370 (W misc) An undefined value was assigned to a typeglob, a la "*foo
4371 = undef". This does nothing. It's possible that you really mean
4372 "undef *foo".
4373 %s: Undefined variable
4375 (A) You've accidentally run your script through csh instead of
4376 Perl. Check the #! line, or manually feed your script into Perl
4377 yourself.
4378 unexec of %s into %s failed!
4380 (F) The unexec() routine failed for some reason. See your local
4381 FSF representative, who probably put it there in the first place.
4382 Unexpected constant lvalue entersub entry via type/targ %d:%d
4384 (P) When compiling a subroutine call in lvalue context, Perl failed
4385 an internal consistency check. It encountered a malformed op tree.
4386 Unicode non-character U+%X is illegal for open interchange
4388 (W utf8, nonchar) Certain codepoints, such as U+FFFE and U+FFFF,
4389 are defined by the Unicode standard to be non-characters. Those
4390 are legal codepoints, but are reserved for internal use; so,
4391 applications shouldn't attempt to exchange them. If you know what
4392 you are doing you can turn off this warning by "no warnings
4393 'nonchar';".
4394 Unicode surrogate U+%X is illegal in UTF-8
4396 (W utf8, surrogate) You had a UTF-16 surrogate in a context where
4397 they are not considered acceptable. These code points, between
4398 U+D800 and U+DFFF (inclusive), are used by Unicode only for UTF-16.
4399 However, Perl internally allows all unsigned integer code points
4400 (up to the size limit available on your platform), including
4401 surrogates. But these can cause problems when being input or
4402 output, which is likely where this message came from. If you
4403 really really know what you are doing you can turn off this warning
4404 by "no warnings 'surrogate';".
4405 Unknown BYTEORDER
4407 (F) There are no byte-swapping functions for a machine with this
4408 byte order.
4409 Unknown error
4411 (P) Perl was about to print an error message in $@, but the $@
4412 variable did not exist, even after an attempt to create it.
4413 Unknown open() mode '%s'
4415 (F) The second argument of 3-argument open() is not among the list
4416 of valid modes: "<", ">", ">>", "+<", "+>", "+>>", "-|", "|-",
4417 "<&", ">&".
4418 Unknown PerlIO layer "%s"
4420 (W layer) An attempt was made to push an unknown layer onto the
4421 Perl I/O system. (Layers take care of transforming data between
4422 external and internal representations.) Note that some layers,
4423 such as "mmap", are not supported in all environments. If your
4424 program didn't explicitly request the failing operation, it may be
4425 the result of the value of the environment variable PERLIO.
4426 Unknown process %x sent message to prime_env_iter: %s
4428 (P) An error peculiar to VMS. Perl was reading values for %ENV
4429 before iterating over it, and someone else stuck a message in the
4430 stream of data Perl expected. Someone's very confused, or perhaps
4431 trying to subvert Perl's population of %ENV for nefarious purposes.
4432 Unknown "re" subpragma '%s' (known ones are: %s)
4434 (W) You tried to use an unknown subpragma of the "re" pragma.
4435 Unknown switch condition (?(%s in regex; marked by <-- HERE in m/%s/
4437 (F) The condition part of a (?(condition)if-clause|else-clause)
4438 construct is not known. The condition must be one of the
4439 following:
4440 (1) (2) ... true if 1st, 2nd, etc., capture matched
4442 (<NAME>) ('NAME') true if named capture matched
4443 (?=...) (?<=...) true if subpattern matches
4444 (?!...) (?<!...) true if subpattern fails to match
4445 (?{ CODE }) true if code returns a true value
4446 (R) true if evaluating inside recursion
4447 (R1) (R2) ... true if directly inside capture group 1, 2, etc.
4448 (R&NAME) true if directly inside named capture
4449 (DEFINE) always false; for defining named subpatterns
4450 The <-- HERE shows in the regular expression about where the
4452 problem was discovered. See perlre.
4453 Unknown Unicode option letter '%c'
4455 (F) You specified an unknown Unicode option. See perlrun
4456 documentation of the "-C" switch for the list of known options.
4457 Unknown Unicode option value %x
4459 (F) You specified an unknown Unicode option. See perlrun
4460 documentation of the "-C" switch for the list of known options.
4461 Unknown verb pattern '%s' in regex; marked by <-- HERE in m/%s/
4463 (F) You either made a typo or have incorrectly put a "*" quantifier
4464 after an open brace in your pattern. Check the pattern and review
4465 perlre for details on legal verb patterns.
4466 Unknown warnings category '%s'
4468 (F) An error issued by the "warnings" pragma. You specified a
4469 warnings category that is unknown to perl at this point.
4470 Note that if you want to enable a warnings category registered by a
4472 module (e.g. "use warnings 'File::Find'"), you must have loaded
4473 this module first.
4474 unmatched [ in regex; marked by <-- HERE in m/%s/
4476 (F) The brackets around a character class must match. If you wish
4477 to include a closing bracket in a character class, backslash it or
4478 put it first. The <-- HERE shows in the regular expression about
4479 where the problem was discovered. See perlre.
4480 unmatched ( in regex; marked by <-- HERE in m/%s/
4482 (F) Unbackslashed parentheses must always be balanced in regular
4483 expressions. If you're a vi user, the % key is valuable for
4484 finding the matching parenthesis. The <-- HERE shows in the
4485 regular expression about where the problem was discovered. See
4486 perlre.
4487 Unmatched right %s bracket
4489 (F) The lexer counted more closing curly or square brackets than
4490 opening ones, so you're probably missing a matching opening
4491 bracket. As a general rule, you'll find the missing one (so to
4492 speak) near the place you were last editing.
4493 Unquoted string "%s" may clash with future reserved word
4495 (W reserved) You used a bareword that might someday be claimed as a
4496 reserved word. It's best to put such a word in quotes, or
4497 capitalize it somehow, or insert an underbar into it. You might
4498 also declare it as a subroutine.
4499 Unrecognized character %s; marked by <-- HERE after %s near column %d
4501 (F) The Perl parser has no idea what to do with the specified
4502 character in your Perl script (or eval) near the specified column.
4503 Perhaps you tried to run a compressed script, a binary program, or
4504 a directory as a Perl program.
4505 Unrecognized escape \%c in character class passed through in regex;
4507 marked by <-- HERE in m/%s/
4508 (W regexp) You used a backslash-character combination which is not
4509 recognized by Perl inside character classes. The character was
4510 understood literally, but this may change in a future version of
4511 Perl. The <-- HERE shows in the regular expression about where the
4512 escape was discovered.
4513 Unrecognized escape \%c passed through
4515 (W misc) You used a backslash-character combination which is not
4516 recognized by Perl. The character was understood literally, but
4517 this may change in a future version of Perl.
4518 Unrecognized escape \%s passed through in regex; marked by <-- HERE in
4520 m/%s/
4521 (W regexp) You used a backslash-character combination which is not
4522 recognized by Perl. The character(s) were understood literally,
4523 but this may change in a future version of Perl. The <-- HERE
4524 shows in the regular expression about where the escape was
4525 discovered.
4526 Unrecognized signal name "%s"
4528 (F) You specified a signal name to the kill() function that was not
4529 recognized. Say "kill -l" in your shell to see the valid signal
4530 names on your system.
4531 Unrecognized switch: -%s (-h will show valid options)
4533 (F) You specified an illegal option to Perl. Don't do that. (If
4534 you think you didn't do that, check the #! line to see if it's
4535 supplying the bad switch on your behalf.)
4536 Unsuccessful %s on filename containing newline
4538 (W newline) A file operation was attempted on a filename, and that
4539 operation failed, PROBABLY because the filename contained a
4540 newline, PROBABLY because you forgot to chomp() it off. See
4541 "chomp" in perlfunc.
4542 Unsupported directory function "%s" called
4544 (F) Your machine doesn't support opendir() and readdir().
4545 Unsupported function %s
4547 (F) This machine doesn't implement the indicated function,
4548 apparently. At least, Configure doesn't think so.
4549 Unsupported function fork
4551 (F) Your version of executable does not support forking.
4552 Note that under some systems, like OS/2, there may be different
4554 flavors of Perl executables, some of which may support fork, some
4555 not. Try changing the name you call Perl by to "perl_", "perl__",
4556 and so on.
4557 Unsupported script encoding %s
4559 (F) Your program file begins with a Unicode Byte Order Mark (BOM)
4560 which declares it to be in a Unicode encoding that Perl cannot
4561 read.
4562 Unsupported socket function "%s" called
4564 (F) Your machine doesn't support the Berkeley socket mechanism, or
4565 at least that's what Configure thought.
4566 Unterminated attribute list
4568 (F) The lexer found something other than a simple identifier at the
4569 start of an attribute, and it wasn't a semicolon or the start of a
4570 block. Perhaps you terminated the parameter list of the previous
4571 attribute too soon. See attributes.
4572 Unterminated attribute parameter in attribute list
4574 (F) The lexer saw an opening (left) parenthesis character while
4575 parsing an attribute list, but the matching closing (right)
4576 parenthesis character was not found. You may need to add (or
4577 remove) a backslash character to get your parentheses to balance.
4578 See attributes.
4579 Unterminated compressed integer
4581 (F) An argument to unpack("w",...) was incompatible with the BER
4582 compressed integer format and could not be converted to an integer.
4583 See "pack" in perlfunc.
4584 Unterminated \g{...} pattern in regex; marked by <-- HERE in m/%s/
4586 (F) You missed a close brace on a \g{..} pattern (group reference)
4587 in a regular expression. Fix the pattern and retry.
4588 Unterminated <> operator
4590 (F) The lexer saw a left angle bracket in a place where it was
4591 expecting a term, so it's looking for the corresponding right angle
4592 bracket, and not finding it. Chances are you left some needed
4593 parentheses out earlier in the line, and you really meant a "less
4594 than".
4595 Unterminated verb pattern argument in regex; marked by <-- HERE in
4597 m/%s/
4598 (F) You used a pattern of the form "(*VERB:ARG)" but did not
4599 terminate the pattern with a ")". Fix the pattern and retry.
4600 Unterminated verb pattern in regex; marked by <-- HERE in m/%s/
4602 (F) You used a pattern of the form "(*VERB)" but did not terminate
4603 the pattern with a ")". Fix the pattern and retry.
4604 untie attempted while %d inner references still exist
4606 (W untie) A copy of the object returned from "tie" (or "tied") was
4607 still valid when "untie" was called.
4608 Usage: POSIX::%s(%s)
4610 (F) You called a POSIX function with incorrect arguments. See
4611 "FUNCTIONS" in POSIX for more information.
4612 Usage: Win32::%s(%s)
4614 (F) You called a Win32 function with incorrect arguments. See
4615 Win32 for more information.
4616 $[ used in %s (did you mean $] ?)
4618 (W syntax) You used $[ in a comparison, such as:
4619 if ($[ > 5.006) {
4621 ...
4622 }
4623 You probably meant to use $] instead. $[ is the base for indexing
4625 arrays. $] is the Perl version number in decimal.
4626 Useless assignment to a temporary
4628 (W misc) You assigned to an lvalue subroutine, but what the
4629 subroutine returned was a temporary scalar about to be discarded,
4630 so the assignment had no effect.
4631 Useless (?-%s) - don't use /%s modifier in regex; marked by <-- HERE in
4633 m/%s/
4634 (W regexp) You have used an internal modifier such as (?-o) that
4635 has no meaning unless removed from the entire regexp:
4636 if ($string =~ /(?-o)$pattern/o) { ... }
4638 must be written as
4640 if ($string =~ /$pattern/) { ... }
4642 The <-- HERE shows in the regular expression about where the
4644 problem was discovered. See perlre.
4645 Useless localization of %s
4647 (W syntax) The localization of lvalues such as "local($x=10)" is
4648 legal, but in fact the local() currently has no effect. This may
4649 change at some point in the future, but in the meantime such code
4650 is discouraged.
4651 Useless (?%s) - use /%s modifier in regex; marked by <-- HERE in m/%s/
4653 (W regexp) You have used an internal modifier such as (?o) that has
4654 no meaning unless applied to the entire regexp:
4655 if ($string =~ /(?o)$pattern/) { ... }
4657 must be written as
4659 if ($string =~ /$pattern/o) { ... }
4661 The <-- HERE shows in the regular expression about where the
4663 problem was discovered. See perlre.
4664 Useless use of /d modifier in transliteration operator
4666 (W misc) You have used the /d modifier where the searchlist has the
4667 same length as the replacelist. See perlop for more information
4668 about the /d modifier.
4669 Useless use of \E
4671 (W misc) You have a \E in a double-quotish string without a "\U",
4672 "\L" or "\Q" preceding it.
4673 Useless use of %s in void context
4675 (W void) You did something without a side effect in a context that
4676 does nothing with the return value, such as a statement that
4677 doesn't return a value from a block, or the left side of a scalar
4678 comma operator. Very often this points not to stupidity on your
4679 part, but a failure of Perl to parse your program the way you
4680 thought it would. For example, you'd get this if you mixed up your
4681 C precedence with Python precedence and said
4682 $one, $two = 1, 2;
4684 when you meant to say
4686 ($one, $two) = (1, 2);
4688 Another common error is to use ordinary parentheses to construct a
4690 list reference when you should be using square or curly brackets,
4691 for example, if you say
4692 $array = (1,2);
4694 when you should have said
4696 $array = [1,2];
4698 The square brackets explicitly turn a list value into a scalar
4700 value, while parentheses do not. So when a parenthesized list is
4701 evaluated in a scalar context, the comma is treated like C's comma
4702 operator, which throws away the left argument, which is not what
4703 you want. See perlref for more on this.
4704 This warning will not be issued for numerical constants equal to 0
4706 or 1 since they are often used in statements like
4707 1 while sub_with_side_effects();
4709 String constants that would normally evaluate to 0 or 1 are warned
4711 about.
4712 Useless use of "re" pragma
4714 (W) You did "use re;" without any arguments. That isn't very
4715 useful.
4716 Useless use of sort in scalar context
4718 (W void) You used sort in scalar context, as in :
4719 my $x = sort @y;
4721 This is not very useful, and perl currently optimizes this away.
4723 Useless use of %s with no values
4725 (W syntax) You used the push() or unshift() function with no
4726 arguments apart from the array, like "push(@x)" or "unshift(@foo)".
4727 That won't usually have any effect on the array, so is completely
4728 useless. It's possible in principle that push(@tied_array) could
4729 have some effect if the array is tied to a class which implements a
4730 PUSH method. If so, you can write it as "push(@tied_array,())" to
4731 avoid this warning.
4732 "use" not allowed in expression
4734 (F) The "use" keyword is recognized and executed at compile time,
4735 and returns no useful value. See perlmod.
4736 Use of assignment to $[ is deprecated
4738 (D deprecated) The $[ variable (index of the first element in an
4739 array) is deprecated. See "$[" in perlvar.
4740 Use of bare << to mean <<"" is deprecated
4742 (D deprecated) You are now encouraged to use the explicitly quoted
4743 form if you wish to use an empty line as the terminator of the
4744 here-document.
4745 Use of comma-less variable list is deprecated
4747 (D deprecated) The values you give to a format should be separated
4748 by commas, not just aligned on a line.
4749 Use of chdir('') or chdir(undef) as chdir() deprecated
4751 (D deprecated) chdir() with no arguments is documented to change to
4752 $ENV{HOME} or $ENV{LOGDIR}. chdir(undef) and chdir('') share this
4753 behavior, but that has been deprecated. In future versions they
4754 will simply fail.
4755 Be careful to check that what you pass to chdir() is defined and
4757 not blank, else you might find yourself in your home directory.
4758 Use of /c modifier is meaningless in s///
4760 (W regexp) You used the /c modifier in a substitution. The /c
4761 modifier is not presently meaningful in substitutions.
4762 Use of /c modifier is meaningless without /g
4764 (W regexp) You used the /c modifier with a regex operand, but
4765 didn't use the /g modifier. Currently, /c is meaningful only when
4766 /g is used. (This may change in the future.)
4767 Use of := for an empty attribute list is not allowed
4769 (F) The construction "my $x := 42" used to parse as equivalent to
4770 "my $x : = 42" (applying an empty attribute list to $x). This
4771 construct was deprecated in 5.12.0, and has now been made a syntax
4772 error, so ":=" can be reclaimed as a new operator in the future.
4773 If you need an empty attribute list, for example in a code
4775 generator, add a space before the "=".
4776 Use of freed value in iteration
4778 (F) Perhaps you modified the iterated array within the loop? This
4779 error is typically caused by code like the following:
4780 @a = (3,4);
4782 @a = () for (1,2,@a);
4783 You are not supposed to modify arrays while they are being iterated
4785 over. For speed and efficiency reasons, Perl internally does not
4786 do full reference-counting of iterated items, hence deleting such
4787 an item in the middle of an iteration causes Perl to see a freed
4788 value.
4789 Use of *glob{FILEHANDLE} is deprecated
4791 (D deprecated) You are now encouraged to use the shorter *glob{IO}
4792 form to access the filehandle slot within a typeglob.
4793 Use of /g modifier is meaningless in split
4795 (W regexp) You used the /g modifier on the pattern for a "split"
4796 operator. Since "split" always tries to match the pattern
4797 repeatedly, the "/g" has no effect.
4798 Use of "goto" to jump into a construct is deprecated
4800 (D deprecated) Using "goto" to jump from an outer scope into an
4801 inner scope is deprecated and should be avoided.
4802 Use of inherited AUTOLOAD for non-method %s() is deprecated
4804 (D deprecated) As an (ahem) accidental feature, "AUTOLOAD"
4805 subroutines are looked up as methods (using the @ISA hierarchy)
4806 even when the subroutines to be autoloaded were called as plain
4807 functions (e.g. "Foo::bar()"), not as methods (e.g. "Foo->bar()" or
4808 "$obj->bar()").
4809 This bug will be rectified in future by using method lookup only
4811 for methods' "AUTOLOAD"s. However, there is a significant base of
4812 existing code that may be using the old behavior. So, as an
4813 interim step, Perl currently issues an optional warning when non-
4814 methods use inherited "AUTOLOAD"s.
4815 The simple rule is: Inheritance will not work when autoloading
4817 non-methods. The simple fix for old code is: In any module that
4818 used to depend on inheriting "AUTOLOAD" for non-methods from a base
4819 class named "BaseClass", execute "*AUTOLOAD =
4820 \&BaseClass::AUTOLOAD" during startup.
4821 In code that currently says "use AutoLoader; @ISA =
4823 qw(AutoLoader);" you should remove AutoLoader from @ISA and change
4824 "use AutoLoader;" to "use AutoLoader 'AUTOLOAD';".
4825 Use of %s in printf format not supported
4827 (F) You attempted to use a feature of printf that is accessible
4828 from only C. This usually means there's a better way to do it in
4829 Perl.
4830 Use of %s is deprecated
4832 (D deprecated) The construct indicated is no longer recommended for
4833 use, generally because there's a better way to do it, and also
4834 because the old way has bad side effects.
4835 Use of -l on filehandle %s
4837 (W io) A filehandle represents an opened file, and when you opened
4838 the file it already went past any symlink you are presumably trying
4839 to look for. The operation returned "undef". Use a filename
4840 instead.
4841 Use of %s on a handle without * is deprecated
4843 (D deprecated) You used "tie", "tied" or "untie" on a scalar but
4844 that scalar happens to hold a typeglob, which means its filehandle
4845 will be tied. If you mean to tie a handle, use an explicit * as in
4846 "tie *$handle".
4847 This was a long-standing bug that was removed in Perl 5.16, as
4849 there was no way to tie the scalar itself when it held a typeglob,
4850 and no way to untie a scalar that had had a typeglob assigned to
4851 it. If you see this message, you must be using an older version.
4852 Use of ?PATTERN? without explicit operator is deprecated
4854 (D deprecated) You have written something like "?\w?", for a
4855 regular expression that matches only once. Starting this term
4856 directly with the question mark delimiter is now deprecated, so
4857 that the question mark will be available for use in new operators
4858 in the future. Write "m?\w?" instead, explicitly using the "m"
4859 operator: the question mark delimiter still invokes match-once
4860 behaviour.
4861 Use of qw(...) as parentheses is deprecated
4863 (D deprecated) You have something like "foreach $x qw(a b c)
4864 {...}", using a "qw(...)" list literal where a parenthesised
4865 expression is expected. Historically the parser fooled itself into
4866 thinking that "qw(...)" literals were always enclosed in
4867 parentheses, and as a result you could sometimes omit parentheses
4868 around them. (You could never do the "foreach qw(a b c) {...}"
4869 that you might have expected, though.) The parser no longer lies
4870 to itself in this way. Wrap the list literal in parentheses, like
4871 "foreach $x (qw(a b c)) {...}".
4872 Use of reference "%s" as array index
4874 (W misc) You tried to use a reference as an array index; this
4875 probably isn't what you mean, because references in numerical
4876 context tend to be huge numbers, and so usually indicates
4877 programmer error.
4878 If you really do mean it, explicitly numify your reference, like
4880 so: $array[0+$ref]. This warning is not given for overloaded
4881 objects, however, because you can overload the numification and
4882 stringification operators and then you presumably know what you are
4883 doing.
4884 Use of reserved word "%s" is deprecated
4886 (D deprecated) The indicated bareword is a reserved word. Future
4887 versions of perl may use it as a keyword, so you're better off
4888 either explicitly quoting the word in a manner appropriate for its
4889 context of use, or using a different name altogether. The warning
4890 can be suppressed for subroutine names by either adding a "&"
4891 prefix, or using a package qualifier, e.g. "&our()", or
4892 "Foo::our()".
4893 Use of tainted arguments in %s is deprecated
4895 (W taint, deprecated) You have supplied "system()" or "exec()" with
4896 multiple arguments and at least one of them is tainted. This used
4897 to be allowed but will become a fatal error in a future version of
4898 perl. Untaint your arguments. See perlsec.
4899 Use of uninitialized value%s
4901 (W uninitialized) An undefined value was used as if it were already
4902 defined. It was interpreted as a "" or a 0, but maybe it was a
4903 mistake. To suppress this warning assign a defined value to your
4904 variables.
4905 To help you figure out what was undefined, perl will try to tell
4907 you the name of the variable (if any) that was undefined. In some
4908 cases it cannot do this, so it also tells you what operation you
4909 used the undefined value in. Note, however, that perl optimizes
4910 your program anid the operation displayed in the warning may not
4911 necessarily appear literally in your program. For example, "that
4912 $foo" is usually optimized into ""that " . $foo", and the warning
4913 will refer to the "concatenation (.)" operator, even though there
4914 is no "." in your program.
4915 Using a hash as a reference is deprecated
4917 (D deprecated) You tried to use a hash as a reference, as in
4918 "%foo->{"bar"}" or "%$ref->{"hello"}". Versions of perl <= 5.6.1
4919 used to allow this syntax, but shouldn't have. It is now
4920 deprecated, and will be removed in a future version.
4921 Using an array as a reference is deprecated
4923 (D deprecated) You tried to use an array as a reference, as in
4924 "@foo->[23]" or "@$ref->[99]". Versions of perl <= 5.6.1 used to
4925 allow this syntax, but shouldn't have. It is now deprecated, and
4926 will be removed in a future version.
4927 Using just the first character returned by \N{} in character class
4929 (W) A charnames handler may return a sequence of more than one
4930 character. Currently all but the first one are discarded when used
4931 in a regular expression pattern bracketed character class.
4932 Using !~ with %s doesn't make sense
4934 (F) Using the "!~" operator with "s///r", "tr///r" or "y///r" is
4935 currently reserved for future use, as the exact behaviour has not
4936 been decided. (Simply returning the boolean opposite of the
4937 modified string is usually not particularly useful.)
4938 UTF-16 surrogate U+%X
4940 (W utf8, surrogate) You had a UTF-16 surrogate in a context where
4941 they are not considered acceptable. These code points, between
4942 U+D800 and U+DFFF (inclusive), are used by Unicode only for UTF-16.
4943 However, Perl internally allows all unsigned integer code points
4944 (up to the size limit available on your platform), including
4945 surrogates. But these can cause problems when being input or
4946 output, which is likely where this message came from. If you
4947 really really know what you are doing you can turn off this warning
4948 by "no warnings 'surrogate';".
4949 Value of %s can be "0"; test with defined()
4951 (W misc) In a conditional expression, you used <HANDLE>, <*>
4952 (glob), "each()", or "readdir()" as a boolean value. Each of these
4953 constructs can return a value of "0"; that would make the
4954 conditional expression false, which is probably not what you
4955 intended. When using these constructs in conditional expressions,
4956 test their values with the "defined" operator.
4957 Value of CLI symbol "%s" too long
4959 (W misc) A warning peculiar to VMS. Perl tried to read the value
4960 of an %ENV element from a CLI symbol table, and found a resultant
4961 string longer than 1024 characters. The return value has been
4962 truncated to 1024 characters.
4963 Variable "%s" is not available
4965 (W closure) During compilation, an inner named subroutine or eval
4966 is attempting to capture an outer lexical that is not currently
4967 available. This can happen for one of two reasons. First, the
4968 outer lexical may be declared in an outer anonymous subroutine that
4969 has not yet been created. (Remember that named subs are created at
4970 compile time, while anonymous subs are created at run-time.) For
4971 example,
4972 sub { my $a; sub f { $a } }
4974 At the time that f is created, it can't capture the current value
4976 of $a, since the anonymous subroutine hasn't been created yet.
4977 Conversely, the following won't give a warning since the anonymous
4978 subroutine has by now been created and is live:
4979 sub { my $a; eval 'sub f { $a }' }->();
4981 The second situation is caused by an eval accessing a variable that
4983 has gone out of scope, for example,
4984 sub f {
4986 my $a;
4987 sub { eval '$a' }
4988 }
4989 f()->();
4990 Here, when the '$a' in the eval is being compiled, f() is not
4992 currently being executed, so its $a is not available for capture.
4993 Variable "%s" is not imported%s
4995 (W misc) With "use strict" in effect, you referred to a global
4996 variable that you apparently thought was imported from another
4997 module, because something else of the same name (usually a
4998 subroutine) is exported by that module. It usually means you put
4999 the wrong funny character on the front of your variable.
5000 Variable length lookbehind not implemented in m/%s/
5002 (F) Lookbehind is allowed only for subexpressions whose length is
5003 fixed and known at compile time. See perlre.
5004 "%s" variable %s masks earlier declaration in same %s
5006 (W misc) A "my", "our" or "state" variable has been redeclared in
5007 the current scope or statement, effectively eliminating all access
5008 to the previous instance. This is almost always a typographical
5009 error. Note that the earlier variable will still exist until the
5010 end of the scope or until all closure referents to it are
5011 destroyed.
5012 Variable syntax
5014 (A) You've accidentally run your script through csh instead of
5015 Perl. Check the #! line, or manually feed your script into Perl
5016 yourself.
5017 Variable "%s" will not stay shared
5019 (W closure) An inner (nested) named subroutine is referencing a
5020 lexical variable defined in an outer named subroutine.
5021 When the inner subroutine is called, it will see the value of the
5023 outer subroutine's variable as it was before and during the *first*
5024 call to the outer subroutine; in this case, after the first call to
5025 the outer subroutine is complete, the inner and outer subroutines
5026 will no longer share a common value for the variable. In other
5027 words, the variable will no longer be shared.
5028 This problem can usually be solved by making the inner subroutine
5030 anonymous, using the "sub {}" syntax. When inner anonymous subs
5031 that reference variables in outer subroutines are created, they are
5032 automatically rebound to the current values of such variables.
5033 vector argument not supported with alpha versions
5035 (W internal) The %vd (s)printf format does not support version
5036 objects with alpha parts.
5037 Verb pattern '%s' has a mandatory argument in regex; marked by <-- HERE
5039 in m/%s/
5040 (F) You used a verb pattern that requires an argument. Supply an
5041 argument or check that you are using the right verb.
5042 Verb pattern '%s' may not have an argument in regex; marked by <-- HERE
5044 in m/%s/
5045 (F) You used a verb pattern that is not allowed an argument.
5046 Remove the argument or check that you are using the right verb.
5047 Version number must be a constant number
5049 (P) The attempt to translate a "use Module n.n LIST" statement into
5050 its equivalent "BEGIN" block found an internal inconsistency with
5051 the version number.
5052 Version string '%s' contains invalid data; ignoring: '%s'
5054 (W misc) The version string contains invalid characters at the end,
5055 which are being ignored.
5056 Warning: something's wrong
5058 (W) You passed warn() an empty string (the equivalent of "warn """)
5059 or you called it with no args and $@ was empty.
5060 Warning: unable to close filehandle %s properly
5062 (S) The implicit close() done by an open() got an error indication
5063 on the close(). This usually indicates your file system ran out of
5064 disk space.
5065 Warning: Use of "%s" without parentheses is ambiguous
5067 (S ambiguous) You wrote a unary operator followed by something that
5068 looks like a binary operator that could also have been interpreted
5069 as a term or unary operator. For instance, if you know that the
5070 rand function has a default argument of 1.0, and you write
5071 rand + 5;
5073 you may THINK you wrote the same thing as
5075 rand() + 5;
5077 but in actual fact, you got
5079 rand(+5);
5081 So put in parentheses to say what you really mean.
5083 Wide character in %s
5085 (S utf8) Perl met a wide character (>255) when it wasn't expecting
5086 one. This warning is by default on for I/O (like print). The
5087 easiest way to quiet this warning is simply to add the ":utf8"
5088 layer to the output, e.g. "binmode STDOUT, ':utf8'". Another way
5089 to turn off the warning is to add "no warnings 'utf8';" but that is
5090 often closer to cheating. In general, you are supposed to
5091 explicitly mark the filehandle with an encoding, see open and
5092 "binmode" in perlfunc.
5093 Within []-length '%c' not allowed
5095 (F) The count in the (un)pack template may be replaced by
5096 "[TEMPLATE]" only if "TEMPLATE" always matches the same amount of
5097 packed bytes that can be determined from the template alone. This
5098 is not possible if it contains any of the codes @, /, U, u, w or a
5099 *-length. Redesign the template.
5100 write() on closed filehandle %s
5102 (W closed) The filehandle you're writing to got itself closed
5103 sometime before now. Check your control flow.
5104 %s "\x%X" does not map to Unicode
5106 (F) When reading in different encodings Perl tries to map
5107 everything into Unicode characters. The bytes you read in are not
5108 legal in this encoding, for example
5109 utf8 "\xE4" does not map to Unicode
5111 if you try to read in the a-diaereses Latin-1 as UTF-8.
5113 'X' outside of string
5115 (F) You had a (un)pack template that specified a relative position
5116 before the beginning of the string being (un)packed. See "pack" in
5117 perlfunc.
5118 'x' outside of string in unpack
5120 (F) You had a pack template that specified a relative position
5121 after the end of the string being unpacked. See "pack" in
5122 perlfunc.
5123 YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!
5125 (F) And you probably never will, because you probably don't have
5126 the sources to your kernel, and your vendor probably doesn't give a
5127 rip about what you want. Your best bet is to put a setuid C
5128 wrapper around your script.
5129 You need to quote "%s"
5131 (W syntax) You assigned a bareword as a signal handler name.
5132 Unfortunately, you already have a subroutine of that name declared,
5133 which means that Perl 5 will try to call the subroutine when the
5134 assignment is executed, which is probably not what you want. (If
5135 it IS what you want, put an & in front.)
5136 Your random numbers are not that random
5138 (F) When trying to initialise the random seed for hashes, Perl
5139 could not get any randomness out of your system. This usually
5140 indicates Something Very Wrong.
5141
5143 warnings, perllexwarn, diagnostics.
5144perl v5.16.3 2013-03-04 PERLDIAG(1)