gcc/testsuite/gcc.dg/pr18501.c

   1 /* Expected uninitialized variable warning.  */
   2
   3 /* { dg-do compile } */
   4 /* { dg-options "-O -Wuninitialized" } */
   5
   6 unsigned bmp_iter_set ();
   7 int something (void);
   8
   9 void
  10 bitmap_print_value_set (void)
  11 {
  12   unsigned first;       /* { dg-warning "may be used" "conditional in loop" } */
  13
  14   for (; bmp_iter_set (); )
  15     {
  16       if (!first)
  17         something ();
  18       first = 0;
  19     }
  20 }