| //@ compile-flags: --target=x86_64-unknown-linux-gnu --crate-type=lib |
| //@ needs-llvm-components: x86 |
| //@ check-pass |
| #![feature(no_core, lang_items)] |
| #![no_core] |
| #![allow(unexpected_cfgs)] |
| |
| #[lang = "pointee_sized"] |
| pub trait PointeeSized {} |
| |
| #[lang = "meta_sized"] |
| pub trait MetaSized: PointeeSized {} |
| |
| #[lang = "sized"] |
| pub trait Sized: MetaSized {} |
| |
| // The compile_error macro does not exist, so if the `cfg` evaluates to `true` this |
| // complains about the missing macro rather than showing the error... but that's good enough. |
| #[cfg(not(target_feature = "x87"))] |
| compile_error!("the x87 feature *should* be exposed in `cfg`"); |
