osf1 man page for dlerror

dlerror(3)						     Library Functions Manual							dlerror(3)

NAME
       dlerror - Get diagnostic information

SYNOPSIS
       #include <dlfcn.h>

       char *dlerror(void)

DESCRIPTION
       The dlerror function returns a null-terminated character string (with no trailing newline) that describes the last error that occurred from
       dynamic linking processing for a call to dlopen(), dlclose(), or dlsym().  If no dynamic linking errors have occurred since the last  invo-
       cation  of dlerror(), dlerror() returns NULL. Thus, invoking dlerror() a second time, immediately following a prior invocation, will result
       in NULL being returned.

RETURN VALUE
       If successful, dlerror() returns a null-terminated character string. Otherwise, NULL is returned.

ERRORS
       No errors are defined.

APPLICATION USAGE
       The messages returned by dlerror() may reside in a static buffer that is overwritten on each call to dlerror(). Application code should not
       write  to this buffer. Programs wishing to preserve an error message should make their own copies of that message.  Depending on the appli-
       cation environment with respect to asynchronous execution events, such as signals or other asynchronous	computation  sharing  the  address
       space, portable applications should use a critical section to retrieve the error pointer and buffer.

RELATED INFORMATION
       dlclose(3), dlopen(3), dlsym(3).  delim off

																	dlerror(3)