gcc/testsuite/gcc.dg/tree-ssa/pr21582.c

   1 /* { dg-do link }  */
   2 /* { dg-options "-O2 -fdump-tree-vrp1" }  */
   3
   4 static inline void do_thing(char *s, int *p, char *q)
   5 {
   6         /* This should be folded away.  */
   7         if (s == 0 || q == 0)
   8                 link_error ();
   9
  10         /* This should not be folded as 'p' is not marked nonnull.  */
  11         if (p)
  12                 *p = 3;
  13 }
  14
  15 void __attribute__((nonnull (1, 3))) do_other_thing(char *s, int *p, char *q)
  16 {
  17         do_thing(s, p, q);
  18 }
  19
  20 int i;
  21
  22 main()
  23 {
  24   do_other_thing ("xxx", &i, "yyy");
  25 }
  26
  27 /* { dg-final { scan-tree-dump-times "Folding predicate p_.*" 0 "vrp1" } } */
  28 /* { dg-final { cleanup-tree-dump "vrp1" } } */