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Fix legacy symbol mangling of closures

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This commit is contained in:
Michael Goulet 2025-01-14 16:32:17 +00:00
parent 2ae9916816
commit faafa5c310
2 changed files with 10 additions and 4 deletions
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8
compiler/rustc_symbol_mangling/src/legacy.rs
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@ -19,15 +19,15 @@ pub(super) fn mangle<'tcx>(
let def_id = instance.def_id();
// We want to compute the "type" of this item. Unfortunately, some
// kinds of items (e.g., closures) don't have an entry in the
// item-type array. So walk back up the find the closest parent
// that DOES have an entry.
// kinds of items (e.g., synthetic static allocations from const eval)
// don't have a proper implementation for the `type_of` query. So walk
// back up the find the closest parent that DOES have a type.
let mut ty_def_id = def_id;
let instance_ty;
loop {
let key = tcx.def_key(ty_def_id);
match key.disambiguated_data.data {
DefPathData::TypeNs(_) | DefPathData::ValueNs(_) => {
DefPathData::TypeNs(_) | DefPathData::ValueNs(_) | DefPathData::Closure => {
instance_ty = tcx.type_of(ty_def_id).instantiate_identity();
debug!(?instance_ty);
break;

6
tests/codegen-units/item-collection/closures.rs
View file

@ -10,3 +10,9 @@ pub async fn async_fn() {}
pub fn closure() {
let _ = || {};
}
//~ MONO_ITEM fn A::{constant#0}::{closure#0} @@
trait A where
[(); (|| {}, 1).1]: Sized,
{
}