gcc/testsuite/gcc.dg/Wstrict-overflow-23.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -Wstrict-overflow" } */
   3
   4 unsigned int
   5 do_scrolling (unsigned int window_size, unsigned int writecost)
   6 {
   7   unsigned int i = window_size;
   8
   9   int terminal_window_p = 0;
  10   unsigned int queue = 0;
  11
  12   for (i = window_size; i; i--)
  13     {
  14       if (writecost < i)
  15     ++queue;
  16       else if (writecost & 1)
  17     terminal_window_p = 1;
  18     }
  19
  20   if (queue > 0)
  21     {
  22       if (!terminal_window_p)
  23     {
  24       terminal_window_p = 1;
  25     }
  26     }
  27
  28   if (terminal_window_p)
  29     return 100;
  30   return 0;
  31 }