1*67e74705SXin Li // RUN: %clang_cc1 -fsyntax-only -verify -pedantic %s 2*67e74705SXin Li 3*67e74705SXin Li union u { int i; unsigned : 3; }; 4*67e74705SXin Li void f(union u); 5*67e74705SXin Li test(int x)6*67e74705SXin Livoid test(int x) { 7*67e74705SXin Li f((union u)x); // expected-warning {{cast to union type is a GNU extension}} 8*67e74705SXin Li f((union u)&x); // expected-error {{cast to union type from type 'int *' not present in union}} 9*67e74705SXin Li f((union u)2U); // expected-error {{cast to union type from type 'unsigned int' not present in union}} 10*67e74705SXin Li } 11*67e74705SXin Li 12*67e74705SXin Li union u w = (union u)2; // expected-warning {{cast to union type is a GNU extension}} 13*67e74705SXin Li union u ww = (union u)1.0; // expected-error{{cast to union type from type 'double' not present in union}} 14*67e74705SXin Li union u x = 7; // expected-error{{initializing 'union u' with an expression of incompatible type 'int'}} 15*67e74705SXin Li int i; 16*67e74705SXin Li union u zz = (union u)i; // expected-error{{initializer element is not a compile-time constant}} expected-warning {{cast to union type is a GNU extension}} 17*67e74705SXin Li 18*67e74705SXin Li struct s {int a, b;}; 19*67e74705SXin Li struct s y = { 1, 5 }; 20*67e74705SXin Li struct s z = (struct s){ 1, 5 }; 21