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🚨 fix unsoundness in bootstrap cache code

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This commit is contained in:
Michael Goulet 2022-12-12 18:29:33 +00:00
parent d137783642
commit 675fa0b3dd
1 changed files with 4 additions and 4 deletions
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8
src/bootstrap/cache.rs
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@ -89,16 +89,16 @@ fn hash<H: Hasher>(&self, state: &mut H) {
impl<T: Internable + Deref> Deref for Interned<T> {
type Target = T::Target;
fn deref(&self) -> &'static Self::Target {
fn deref(&self) -> &Self::Target {
let l = T::intern_cache().lock().unwrap();
unsafe { mem::transmute::<&Self::Target, &'static Self::Target>(l.get(*self)) }
unsafe { mem::transmute::<&Self::Target, &Self::Target>(l.get(*self)) }
}
}
impl<T: Internable + AsRef<U>, U: ?Sized> AsRef<U> for Interned<T> {
fn as_ref(&self) -> &'static U {
fn as_ref(&self) -> &U {
let l = T::intern_cache().lock().unwrap();
unsafe { mem::transmute::<&U, &'static U>(l.get(*self).as_ref()) }
unsafe { mem::transmute::<&U, &U>(l.get(*self).as_ref()) }
}
}