gdb/testsuite/gdb.base/fork-no-detach-follow-child-dlopen.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2022 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 <assert.h>
  19 #include <dlfcn.h>
  20 #include <unistd.h>
  21 #include <sys/wait.h>
  22
  23 int
  24 main (void)
  25 {
  26   pid_t pid = fork ();
  27   if (pid == 0)
  28     {
  29       void *shlib = dlopen (SHLIB_PATH, RTLD_NOW);
  30       int (*add) (int, int) = dlsym (shlib, "add");
  31
  32       return add (-2, 2);
  33     }
  34
  35   int wstatus;
  36   if (waitpid (pid, &wstatus, 0) == -1)
  37     assert (WIFEXITED (wstatus) && WEXITSTATUS (wstatus) == 0);
  38
  39   return 0;
  40 }