gcc/testsuite/gcc.dg/Wstrict-overflow-9.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-fstrict-overflow -O2 -Wstrict-overflow=2" } */
   3
   4 /* Source: Ian Lance Taylor.  */
   5
   6 int
   7 foo (int i)
   8 {
   9   return __builtin_abs (i) >= 0; /* { dg-warning "assuming signed overflow does not occur" "correct warning" } */
  10 }