gcc/testsuite/gcc.dg/c99-const-expr-10.c

   1 /* Test for constant expressions: invalid null pointer constants in
   2    various contexts (make sure NOPs are not inappropriately
   3    stripped).  */
   4 /* Origin: Joseph Myers <joseph@codesourcery.com> */
   5 /* { dg-do compile } */
   6 /* { dg-options "-std=iso9899:1999 -pedantic-errors" } */
   7
   8 void *p = (__SIZE_TYPE__)(void *)0; /* { dg-error "without a cast" } */
   9 struct s { void *a; } q = { (__SIZE_TYPE__)(void *)0 }; /* { dg-error "without a cast|near initialization" } */
  10 void *
  11 f (void)
  12 {
  13   void *r;
  14   r = (__SIZE_TYPE__)(void *)0; /* { dg-error "without a cast" } */
  15   return (__SIZE_TYPE__)(void *)0; /* { dg-error "without a cast" } */
  16 }
  17 void g (void *); /* { dg-message "but argument is of type" } */
  18 void
  19 h (void)
  20 {
  21   g ((__SIZE_TYPE__)(void *)0); /* { dg-error "without a cast" } */
  22 }
  23 void g2 (int, void *); /* { dg-message "but argument is of type" } */
  24 void
  25 h2 (void)
  26 {
  27   g2 (0, (__SIZE_TYPE__)(void *)0); /* { dg-error "without a cast" } */
  28 }