source: trunk/src/gcc/libiberty/xstrerror.c@ 1642

/* xstrerror.c -- jacket routine for more robust strerror() usage.
   Fri Jun 16 18:30:00 1995  Pat Rankin  <[email protected]>
   This code is in the public domain.  */

/*

@deftypefn Replacement char* xstrerror (int @var{errnum})

Behaves exactly like the standard @code{strerror} function, but
will never return a @code{NULL} pointer.

@end deftypefn

*/

#include <stdio.h>

#include "libiberty.h"
#include "config.h"

#ifdef VMS
#include <errno.h>
#if !defined (__STRICT_ANSI__) && !defined (__HIDE_FORBIDDEN_NAMES)
extern char *strerror PARAMS ((int,...));
#define DONT_DECLARE_STRERROR
#endif
#endif  /* VMS */

#ifndef DONT_DECLARE_STRERROR
extern char *strerror PARAMS ((int));
#endif

/* If strerror returns NULL, we'll format the number into a static buffer.  */

#define ERRSTR_FMT "undocumented error #%d"
static char xstrerror_buf[sizeof ERRSTR_FMT + 20];

/* Like strerror, but result is never a null pointer.  */

char *
xstrerror (errnum)
     int errnum;
{
  char *errstr;