gdb/testsuite/gdb.base/sigchld.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2008-2021 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 /* Check that GDB isn't messing the SIGCHLD mask while creating an
  19    inferior.  */
  20
  21 #include <signal.h>
  22 #include <stdlib.h>
  23
  24 int
  25 main ()
  26 {
  27   sigset_t mask;
  28
  29   sigemptyset (&mask);
  30   sigprocmask (SIG_BLOCK, NULL, &mask);
  31
  32   if (!sigismember (&mask, SIGCHLD))
  33     return 0; /* good, not blocked */
  34   else
  35     return 1; /* bad, blocked */
  36 }