bjoernager/rust
bjoernager/rust
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This commit is contained in:
John Kåre Alsaker 2023-03-26 12:24:44 +02:00
parent 453e919c37
commit 6d99dd9189
6 changed files with 19 additions and 25 deletions
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4
compiler/rustc_middle/src/query/erase.rs
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@ -3,6 +3,8 @@ use std::mem::{size_of, transmute_copy, MaybeUninit};
#[derive(Copy, Clone)]
pub struct Erased<T: Copy> {
// We use `MaybeUninit` here so we can store any value
// in `data` since we aren't actually storing a `T`.
data: MaybeUninit<T>,
}
@ -12,7 +14,7 @@ pub trait EraseType: Copy {
// Allow `type_alias_bounds` since compilation will fail without `EraseType`.
#[allow(type_alias_bounds)]
pub type Erase<T: Copy + EraseType> = Erased<impl Copy>;
pub type Erase<T: EraseType> = Erased<impl Copy>;
#[inline(always)]
pub fn erase<T: EraseType>(src: T) -> Erase<T> {