gcc/testsuite/gcc.dg/pr52904.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-Wstrict-overflow -O2" } */
   3 extern int foo (int);
   4
   5 int
   6 wait_reading_process_output (void)
   7 {
   8   int nfds = 0;
   9   int channel;
  10
  11   for (channel = 0; channel < 1024; ++channel)
  12     {
  13       if (foo (channel))
  14         nfds++;
  15     }
  16
  17   if (nfds < 0) /* { dg-bogus "assuming signed overflow does not occur" "" } */
  18     return 1;
  19   return 0;
  20 }