dlerror(3)

1dlerror(3)                 Library Functions Manual                 dlerror(3)
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NAME

6       dlerror - obtain error diagnostic for functions in the dlopen API
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LIBRARY

9       Dynamic linking library (libdl, -ldl)
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SYNOPSIS

12       #include <dlfcn.h>
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14       char *dlerror(void);
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DESCRIPTION

17       The dlerror() function returns a human-readable, null-terminated string
18       describing the most recent error that occurred from a call  to  one  of
19       the  functions in the dlopen API since the last call to dlerror().  The
20       returned string does not include a trailing newline.
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22       dlerror() returns NULL if no errors have occurred since  initialization
23       or since it was last called.
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ATTRIBUTES

26       For  an  explanation  of  the  terms  used  in  this  section,  see at‐
27       tributes(7).
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29       ┌────────────────────────────────────────────┬───────────────┬─────────┐
30       │Interface                                   │ Attribute     │ Value   │
31       ├────────────────────────────────────────────┼───────────────┼─────────┤
32       │dlerror()                                   │ Thread safety │ MT-Safe │
33       └────────────────────────────────────────────┴───────────────┴─────────┘
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STANDARDS

36       POSIX.1-2008.
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HISTORY

39       glibc 2.0.  POSIX.1-2001.
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41       SunOS.
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NOTES

44       The message returned by dlerror() may reside in a statically  allocated
45       buffer that is overwritten by subsequent dlerror() calls.
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EXAMPLES

48       See dlopen(3).
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