gcc/testsuite/gcc.dg/torture/ftrapv-2.c

   1 /* { dg-do run } */
   2 /* With -flto this degenerates to constant folding which doesn't work.  */
   3 /* { dg-skip-if "" { *-*-* } { "-flto" } { "" } } */
   4 /* { dg-additional-options "-ftrapv" } */
   5 /* { dg-require-effective-target trapping } */
   6 /* { dg-require-fork "" } */
   7
   8 #include <stdlib.h>
   9 #include <unistd.h>
  10 #include <sys/types.h>
  11 #include <sys/wait.h>
  12
  13 /* Verify SImode operations properly trap.  PR middle-end/68046 */
  14
  15 volatile int i = 0x7fffffff;
  16
  17 int main(void)
  18 {
  19   pid_t child = fork ();
  20   int status = 0;
  21   if (child == 0)
  22     {
  23       i = i + 1;
  24       exit (0);
  25     }
  26   else if (child == -1)
  27     return 0;
  28   if (wait (&status) == child
  29       && status == 0)
  30     abort ();
  31   return 0;
  32 }