cast-to-union.c revision 6ed2ef8281e44fdd8f002d1cbe11668068d3e530 
1// RUN: clang -fsyntax-only -verify -pedantic %s
2
3union u { int i; };
4void f(union u);
5
6void test(int x) {
7  f((union u)x); // expected-warning {{C99 forbids casts to union type}}
8  f((union u)&x); // expected-error {{cast to union type from type 'int *' not present in union}}
9}
10
11union u w = (union u)2; // expected-warning {{C99 forbids casts to union type}}
12union u ww = (union u)1.0; // expected-error{{cast to union type from type 'double' not present in union}}
13union u x = 7; // expected-error{{incompatible type initializing 'int', expected 'union u'}}
14int i;
15union u zz = (union u)i; // expected-error{{initializer element is not a compile-time constant}}  expected-warning {{C99 forbids casts to union type}}
16
17struct s {int a, b;};
18struct s y = { 1, 5 };
19struct s z = (struct s){ 1, 5 };
20