assert/assert-perr.c

   1 /* Copyright (C) 1994, 1995, 1996 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Library General Public License as
   6    published by the Free Software Foundation; either version 2 of the
   7    License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 #include <assert.h>
  20 #include <stdio.h>
  21 #include <string.h>
  22 #include <sysdep.h>
  23
  24
  25 extern const char *__assert_program_name; /* In assert.c.  */
  26
  27 /* This function, when passed an error number, a filename, and a line
  28    number, prints a message on the standard error stream of the form:
  29         a.c:10: foobar: Unexpected error: Computer bought the farm
  30    It then aborts program execution via a call to `abort'.  */
  31
  32 #ifdef FATAL_PREPARE_INCLUDE
  33 #include FATAL_PREPARE_INCLUDE
  34 #endif
  35
  36 void
  37 __assert_perror_fail (int errnum,
  38                       const char *file, unsigned int line,
  39                       const char *function)
  40 {
  41   char errbuf[1024];
  42 #ifdef FATAL_PREPARE
  43   FATAL_PREPARE;
  44 #endif
  45
  46   /* Print the message.  */
  47   (void) fprintf (stderr, _("%s%s%s:%u: %s%sUnexpected error: %s.\n"),
  48                   __assert_program_name ? __assert_program_name : "",
  49                   __assert_program_name ? ": " : "",
  50                   file, line,
  51                   function ? function : "", function ? ": " : "",
  52                   __strerror_r (errnum, errbuf, sizeof errbuf));
  53   (void) fflush (stderr);
  54
  55   abort ();
  56 }