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
  11 __attribute__((noinline)) int
  12 mulv(int a, int b)
  13 {
  14   return a * b;
  15 }
  16
  17 int
  18 main()
  19 {
  20   mulv( 0,  0);
  21   mulv( 0, -1);
  22   mulv(-1,  0);
  23   mulv(-1, -1);
  24   return 0;
  25 }