1RE_COMP(3)                 Linux Programmer's Manual                RE_COMP(3)
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NAME

6       re_comp, re_exec - BSD regex functions
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SYNOPSIS

9       #define _REGEX_RE_COMP
10       #include <sys/types.h>
11       #include <regex.h>
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13       char *re_comp(const char *regex);
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15       int re_exec(const char *string);
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DESCRIPTION

18       re_comp()  is  used  to  compile the null-terminated regular expression
19       pointed to by regex.  The compiled pattern occupies a static area,  the
20       pattern  buffer,  which  is overwritten by subsequent use of re_comp().
21       If regex is NULL, no operation is performed and  the  pattern  buffer's
22       contents are not altered.
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24       re_exec()  is used to assess whether the null-terminated string pointed
25       to by string matches the previously compiled regex.
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RETURN VALUE

28       re_comp() returns NULL on successful compilation of regex otherwise  it
29       returns a pointer to an appropriate error message.
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31       re_exec() returns 1 for a successful match, zero for failure.
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ATTRIBUTES

34       For  an  explanation  of  the  terms  used  in  this  section,  see at‐
35       tributes(7).
36
37       ┌─────────────────────┬───────────────┬───────────┐
38       │Interface            │ Attribute     │ Value     │
39       ├─────────────────────┼───────────────┼───────────┤
40       │re_comp(), re_exec() │ Thread safety │ MT-Unsafe │
41       └─────────────────────┴───────────────┴───────────┘

CONFORMING TO

43       4.3BSD.
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NOTES

46       These functions are obsolete; the functions  documented  in  regcomp(3)
47       should be used instead.
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SEE ALSO

50       regcomp(3), regex(7), GNU regex manual
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COLOPHON

53       This  page  is  part of release 5.10 of the Linux man-pages project.  A
54       description of the project, information about reporting bugs,  and  the
55       latest     version     of     this    page,    can    be    found    at
56       https://www.kernel.org/doc/man-pages/.
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60GNU                               2017-09-15                        RE_COMP(3)
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