gcc/testsuite/gcc.dg/Wcxx-compat-1.c

   1 /* PR c/21759  */
   2 /* { dg-options "-Wc++-compat" } */
   3
   4 int
   5 main(void)
   6 {
   7    void *p = 0;
   8    int *q = p;                  /* { dg-warning "not permitted" } */
   9    double* t = (void *)0;
  10    return p != q;
  11 }