rust/tests/ui/layout/thumb-enum.rs

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2021-08-10 13:34:13 -05:00
// compile-flags: --target thumbv8m.main-none-eabihf
// needs-llvm-components: arm
//
// Verify that thumb targets implement the repr(C) for enums correctly.
//
// See #87917
#![feature(never_type, rustc_attrs, no_core, lang_items)]
#![crate_type = "lib"]
#![no_core]
#[lang="sized"]
trait Sized {}
#[rustc_layout(debug)]
#[repr(C)]
enum A { Apple } //~ ERROR: layout_of
#[rustc_layout(debug)]
#[repr(C)]
enum B { Banana = 255, } //~ ERROR: layout_of
#[rustc_layout(debug)]
#[repr(C)]
enum C { Chaenomeles = 256, } //~ ERROR: layout_of
#[rustc_layout(debug)]
#[repr(C)]
enum P { Peach = 0x1000_0000isize, } //~ ERROR: layout_of
const TANGERINE: usize = 0x8100_0000; // hack to get negative numbers without negation operator!
#[rustc_layout(debug)]
#[repr(C)]
enum T { Tangerine = TANGERINE as isize } //~ ERROR: layout_of