/* RUN: %clang_cc1 %s -fsyntax-only -pedantic -verify */ extern struct {int a;} x; // expected-note {{previous definition is here}} extern struct {int a;} x; // expected-error {{redefinition of 'x'}} struct x; int a(struct x* b) { // Per C99 6.7.2.3, since the outer and inner "struct x"es have different // scopes, they don't refer to the same type, and are therefore incompatible struct x {int a;} *c = b; // expected-warning {{incompatible pointer types}} } struct x {int a;} r; int b() { struct x {char x;} s = r; // expected-error {{initializing 'struct x' with an expression of incompatible type 'struct x'}} }