dlfcn/errmsg1.c

   1 /* Copyright (C) 2000 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 Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the 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    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <dlfcn.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23
  24 int
  25 main (void)
  26 {
  27   void *h;
  28   const char *s;
  29
  30   /* Test that dlerror works initially.  */
  31   s = dlerror ();
  32   printf ("dlerror() without prior dl*() call returned: %s\n", s);
  33   if (s != NULL)
  34     return 1;
  35
  36   h = dlopen ("errmsg1mod.so", RTLD_NOW);
  37   if (h != NULL)
  38     {
  39       dlclose (h);
  40       puts ("errmsg1mod.so could be loaded !?");
  41       exit (1);
  42     }
  43
  44   s = dlerror ();
  45   puts (s);
  46
  47   return strstr (s, "errmsg1mod.so") == NULL;
  48 }