1*67e74705SXin Li /* RUN: %clang_cc1 %s -fsyntax-only -pedantic -verify 2*67e74705SXin Li */ 3*67e74705SXin Li 4*67e74705SXin Li extern struct {int a;} x; // expected-note {{previous declaration is here}} 5*67e74705SXin Li extern struct {int a;} x; // expected-error {{redeclaration of 'x'}} 6*67e74705SXin Li 7*67e74705SXin Li struct x; a(struct x * b)8*67e74705SXin Liint a(struct x* b) { 9*67e74705SXin Li // Per C99 6.7.2.3, since the outer and inner "struct x"es have different 10*67e74705SXin Li // scopes, they don't refer to the same type, and are therefore incompatible 11*67e74705SXin Li struct x {int a;} *c = b; // expected-warning {{incompatible pointer types}} 12*67e74705SXin Li } 13*67e74705SXin Li 14*67e74705SXin Li struct x {int a;} r; b()15*67e74705SXin Liint b() { 16*67e74705SXin Li struct x {char x;} s = r; // expected-error {{initializing 'struct x' with an expression of incompatible type 'struct x'}} 17*67e74705SXin Li } 18