tests/test-raise.c

   1 /* Test raising a signal.
   2    Copyright (C) 2011-2020 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program 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
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #include <config.h>
  18
  19 #include <signal.h>
  20
  21 #include "signature.h"
  22 SIGNATURE_CHECK (raise, int, (int));
  23
  24 #include <stdlib.h>
  25
  26 #include "macros.h"
  27
  28 /* It is safe to use _Noreturn here: exit() never returns, and GCC knows that
  29    exit() is a non-returning function, even on platforms where its declaration
  30    in <stdlib.h> does not have the 'noreturn' attribute.  */
  31 static _Noreturn void
  32 handler (int sig)
  33 {
  34   exit (0);
  35 }
  36
  37 int
  38 main (void)
  39 {
  40   /* Test behaviour for invalid argument.  */
  41   ASSERT (raise (-1) != 0);
  42
  43   /* Test behaviour for SIGINT.  */
  44   ASSERT (signal (SIGINT, handler) != SIG_ERR);
  45
  46   raise (SIGINT);
  47
  48   /* We should not get here, because the handler takes away the control.  */
  49   exit (1);
  50 }