gcc/testsuite/gcc.dg/noncompile/incomplete-3.c

   1 /* Both occurrences of "c" should get diagnostics.  PR 12391.  */
   2 typedef struct { int a; } b_t;
   3
   4 int foo (void)
   5 {
   6   b_t d;
   7   struct b_t *c = &d;   /* { dg-error "incompatible pointer type" } */
   8   c->a;                 /* { dg-error "invalid use of undefined type" } */
   9 }