clang/test/Sema/struct-compat.c

   1 /* RUN: %clang_cc1 %s -fsyntax-only -pedantic -verify
   2  */
   3
   4 extern struct {int a;} x; // expected-note {{previous declaration is here}}
   5 extern struct {int a;} x; // expected-error {{redeclaration of 'x'}}
   6
   7 struct x;
   8 int a(struct x* b) {
   9 // Per C99 6.7.2.3, since the outer and inner "struct x"es have different
  10 // scopes, they don't refer to the same type, and are therefore incompatible
  11 struct x {int a;} *c = b; // expected-warning {{incompatible pointer types}}
  12 }
  13
  14 struct x {int a;} r;
  15 int b(void) {
  16 struct x {char x;} s = r; // expected-error {{initializing 'struct x' with an expression of incompatible type 'struct x'}}
  17 }