rust/tests/ui/mir/mir_const_prop_tuple_field_...

28 lines
627 B
Rust

//@ compile-flags: -Z mir-opt-level=3
//@ build-pass
#![crate_type="lib"]
// This used to ICE: const-prop did not account for field reordering of scalar pairs,
// and would generate a tuple like `(0x1337, VariantBar): (FooEnum, isize)`,
// causing assertion failures in codegen when trying to read 0x1337 at the wrong type.
pub enum FooEnum {
VariantBar,
VariantBaz,
VariantBuz,
}
pub fn wrong_index() -> isize {
let (_, b) = id((FooEnum::VariantBar, 0x1337));
b
}
pub fn wrong_index_two() -> isize {
let (_, (_, b)) = id(((), (FooEnum::VariantBar, 0x1338)));
b
}
fn id<T>(x: T) -> T {
x
}