dlerror(3) — Linux manual page

dlerror(3)               Library Functions Manual              dlerror(3)

NAME         top

       dlerror - obtain error diagnostic for functions in the dlopen API

LIBRARY         top

       Dynamic linking library (libdl, -ldl)

SYNOPSIS         top

       #include <dlfcn.h>

       char *dlerror(void);

DESCRIPTION         top

       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.

ATTRIBUTES         top

       For an explanation of the terms used in this section, see
       attributes(7).
       ┌──────────────────────────────────────┬───────────────┬─────────┐
       │ Interface                            │ Attribute     │ Value   │
       ├──────────────────────────────────────┼───────────────┼─────────┤
       │ dlerror()                            │ Thread safety │ MT-Safe │
       └──────────────────────────────────────┴───────────────┴─────────┘

STANDARDS         top

       POSIX.1-2008.

HISTORY         top

       glibc 2.0.  POSIX.1-2001.

       SunOS.

NOTES         top

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

EXAMPLES         top

       See dlopen(3).

SEE ALSO         top

       dladdr(3), dlinfo(3), dlopen(3), dlsym(3)

COLOPHON         top

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Linux man-pages 6.15            2025-05-17                     dlerror(3)

Pages that refer to this page: dladdr(3),  dlinfo(3),  dlopen(3),  dlsym(3)

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