gcc/testsuite/gcc.dg/ftrapv-1.c

   1 /* Copyright (C) 2004 Free Software Foundation.
   2
   3    PR other/15526
   4    Verify correct overflow checking with -ftrapv.
   5
   6    Written by Falk Hueffner, 20th May 2004.  */
   7
   8 /* { dg-do run } */
   9 /* { dg-options "-ftrapv" } */
  10 /* { dg-require-effective-target trapping } */
  11
  12 __attribute__((noinline)) int
  13 mulv(int a, int b)
  14 {
  15   return a * b;
  16 }
  17
  18 int
  19 main()
  20 {
  21   mulv( 0,  0);
  22   mulv( 0, -1);
  23   mulv(-1,  0);
  24   mulv(-1, -1);
  25   return 0;
  26 }