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