diff options
Diffstat (limited to 'test/Sema/cast-to-union.c')
-rw-r--r-- | test/Sema/cast-to-union.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/test/Sema/cast-to-union.c b/test/Sema/cast-to-union.c new file mode 100644 index 0000000..24f913b --- /dev/null +++ b/test/Sema/cast-to-union.c @@ -0,0 +1,19 @@ +// RUN: clang-cc -fsyntax-only -verify -pedantic %s + +union u { int i; }; +void f(union u); + +void test(int x) { + f((union u)x); // expected-warning {{C99 forbids casts to union type}} + f((union u)&x); // expected-error {{cast to union type from type 'int *' not present in union}} +} + +union u w = (union u)2; // expected-warning {{C99 forbids casts to union type}} +union u ww = (union u)1.0; // expected-error{{cast to union type from type 'double' not present in union}} +union u x = 7; // expected-error{{incompatible type initializing 'int', expected 'union u'}} +int i; +union u zz = (union u)i; // expected-error{{initializer element is not a compile-time constant}} expected-warning {{C99 forbids casts to union type}} + +struct s {int a, b;}; +struct s y = { 1, 5 }; +struct s z = (struct s){ 1, 5 }; |