bjoernager/rust
bjoernager/rust
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This commit is contained in:
lcnr 2024-10-02 14:39:43 +02:00
parent a7b114420c
commit 1a04a317c4
5 changed files with 31 additions and 23 deletions
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17
compiler/rustc_middle/src/ty/fold.rs
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@ -210,16 +210,17 @@ where
debug_assert!(!ty.has_vars_bound_above(ty::INNERMOST));
ty::fold::shift_vars(self.tcx, ty, self.current_index.as_u32())
}
_ if t.has_vars_bound_at_or_above(self.current_index) => {
if let Some(&ty) = self.cache.get(&(self.current_index, t)) {
return ty;
_ => {
if !t.has_vars_bound_at_or_above(self.current_index) {
t
} else if let Some(&t) = self.cache.get(&(self.current_index, t)) {
t
} else {
let res = t.super_fold_with(self);
assert!(self.cache.insert((self.current_index, t), res));
res
}
let res = t.super_fold_with(self);
assert!(self.cache.insert((self.current_index, t), res));
res
}
_ => t,
}
}