dlerror(3) Library Functions Manual dlerror(3)
NAME
dlerror - obtain error diagnostic for functions in the dlopen API
LIBRARY
Dynamic linking library (libdl, -ldl)
SYNOPSIS
#include <dlfcn.h>
char *dlerror(void);
DESCRIPTION
The dlerror() function returns a human-readable, null-terminated string
describing the most recent error that occurred from a call to one of
the functions in the dlopen API since the last call to dlerror(). The
returned string does not include a trailing newline.
dlerror() returns NULL if no errors have occurred since initialization
or since it was last called.
VERSIONS
dlerror() is present in glibc 2.0 and later.
ATTRIBUTES
For an explanation of the terms used in this section, see at-
tributes(7).
┌────────────────────────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├────────────────────────────────────────────┼───────────────┼─────────┤
│dlerror() │ Thread safety │ MT-Safe │
└────────────────────────────────────────────┴───────────────┴─────────┘
STANDARDS
POSIX.1-2001.
NOTES
The message returned by dlerror() may reside in a statically allocated
buffer that is overwritten by subsequent dlerror() calls.
History
This function is part of the dlopen API, derived from SunOS.
EXAMPLES
See dlopen(3).
SEE ALSO
dladdr(3), dlinfo(3), dlopen(3), dlsym(3)
Linux man-pages 6.03 2022-12-15 dlerror(3)
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