view gcc/testsuite/gcc.dg/fwrapv-1.c @ 131:84e7813d76e9

gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents 04ced10e8804
children
line wrap: on
line source

/* Copyright (C) 2003 Free Software Foundation.

   Test that the -fwrapv command line option is accepted and disables
   "unsafe" optimizations that rely on undefined arithmetic overflow.

   Written by Roger Sayle, 24th March 2003.  */

/* { dg-do run } */
/* { dg-options "-O2 -fwrapv" } */

#include <limits.h>

extern void abort ();

int test(int x)
{
  return (2*x)/2;
}

int
main()
{
  int x = INT_MAX;

  if (test(x) == x)
    abort ();
  return 0;
}