gcc/testsuite/gcc.c-torture/execute/loop-12.c

   1 /* Checks that pure functions are not treated as const.  */
   2
   3 char *p;
   4
   5 static int __attribute__ ((pure))
   6 is_end_of_statement (void)
   7 {
   8   return *p == '\n' || *p == ';' || *p == '!';
   9 }
  10
  11 void foo (void)
  12 {
  13   /* The is_end_of_statement call was moved out of the loop at one stage,
  14      resulting in an endless loop.  */
  15   while (!is_end_of_statement ())
  16     p++;
  17 }
  18
  19 int
  20 main (void)
  21 {
  22   p = "abc\n";
  23   foo ();
  24   return 0;
  25 }