gcc/testsuite/gcc.dg/compare6.c

   1 /* PR c/2098 */
   2 /* Test for a warning on comparison on out-of-range data.  */
   3 /* { dg-do compile } */
   4 /* { dg-options "-Wtype-limits" } */
   5
   6 signed char sc;
   7 unsigned char uc;
   8
   9 void foo()
  10 {
  11   if (sc == 10000) return; /* { dg-warning "always false" "signed" } */
  12   if (uc == 10000) return; /* { dg-warning "always false" "unsigned" } */
  13 }