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glibc  2.9
errmsg1.c
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00001 /* Copyright (C) 2000 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #include <dlfcn.h>
00020 #include <stdio.h>
00021 #include <stdlib.h>
00022 #include <string.h>
00023 
00024 int
00025 main (void)
00026 {
00027   void *h;
00028   const char *s;
00029 
00030   /* Test that dlerror works initially.  */
00031   s = dlerror ();
00032   printf ("dlerror() without prior dl*() call returned: %s\n", s);
00033   if (s != NULL)
00034     return 1;
00035 
00036   h = dlopen ("errmsg1mod.so", RTLD_NOW);
00037   if (h != NULL)
00038     {
00039       dlclose (h);
00040       puts ("errmsg1mod.so could be loaded !?");
00041       exit (1);
00042     }
00043 
00044   s = dlerror ();
00045   puts (s);
00046 
00047   return strstr (s, "errmsg1mod.so") == NULL;
00048 }