gdb/testsuite/gdb.btrace/dlopen.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2015-2016 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #include <dlfcn.h>
  19 #include <assert.h>
  20 #include <stdlib.h>
  21
  22 static int
  23 test (void)
  24 {
  25   void *dso;
  26   int (*fun) (void);
  27   int answer;
  28
  29   dso = dlopen (DSO_NAME, RTLD_NOW | RTLD_GLOBAL);
  30   assert (dso != NULL);
  31
  32   fun = (int (*) (void)) dlsym (dso, "answer");
  33   assert (fun != NULL);
  34
  35   answer = fun ();
  36
  37   dlclose (dso);
  38
  39   return answer;
  40 }
  41
  42 int
  43 main (void)
  44 {
  45   int answer;
  46
  47   answer = test ();
  48
  49   return answer;
  50 }