gcc/testsuite/gcc.dg/Wstrict-overflow-15.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-fstrict-overflow -O2 -Wstrict-overflow=4" } */
   3
   4 /* Source: Ian Lance Taylor.  */
   5
   6 int
   7 foo (int j)
   8 {
   9   int i;
  10   int sum = 0;
  11
  12   for (i = 1; i < j; i += i)
  13     sum += __builtin_abs (i); /* { dg-warning "assuming signed overflow does not occur" "" { xfail *-*-* } } */
  14   return sum;
  15 }