blob: 2c9061a7a50f875636c7eae495b33ff12001baef [file] [log] [blame]
//@ dont-require-annotations: NOTE
//@ normalize-stderr: "(the raw bytes of the constant) \(size: [0-9]*, align: [0-9]*\)" -> "$1 (size: $$SIZE, align: $$ALIGN)"
//@ normalize-stderr: "([[:xdigit:]]{2}\s){4}(__\s){4}\s+│\s+([?|\.]){4}\W{4}" -> "HEX_DUMP"
type Field1 = i32;
type Field2 = f32;
type Field3 = i64;
#[repr(C)]
union DummyUnion {
field1: Field1,
field2: Field2,
field3: Field3,
}
const FLOAT1_AS_I32: i32 = 1065353216;
const UNION: DummyUnion = DummyUnion { field1: FLOAT1_AS_I32 };
const fn read_field1() -> Field1 {
const FIELD1: Field1 = unsafe { UNION.field1 };
FIELD1
}
const fn read_field2() -> Field2 {
const FIELD2: Field2 = unsafe { UNION.field2 };
FIELD2
}
const fn read_field3() -> Field3 {
const FIELD3: Field3 = unsafe { UNION.field3 };
//~^ ERROR uninitialized
FIELD3
}
fn main() {
assert_eq!(read_field1(), FLOAT1_AS_I32);
assert_eq!(read_field2(), 1.0);
assert_eq!(read_field3(), unsafe { UNION.field3 });
}