dlerror(3) — Linux manual page

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.

ATTRIBUTES

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

STANDARDS

       POSIX.1-2008.

HISTORY

       glibc 2.0.  POSIX.1-2001.

       SunOS.

NOTES

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

EXAMPLES

       See dlopen(3).

SEE ALSO

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

COLOPHON

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Linux man-pages 6.9.1          2024-05-02                     dlerror(3)

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

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