gcc/testsuite/gcc.dg/Wstrict-overflow-25.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-fstrict-overflow -O2 -Wstrict-overflow=3" } */
   3
   4 /* We can only simplify the conditional when using strict overflow
   5    semantics.  */
   6
   7 int
   8 foo (int x, int y)
   9 {
  10   return x - y < 0; /* { dg-warning "assuming signed overflow does not occur" "correct warning" { xfail *-*-* } } */
  11 }