about summary refs log tree commit diff
path: root/compiler/rustc_const_eval/src/const_eval
diff options
context:
space:
mode:
Diffstat (limited to 'compiler/rustc_const_eval/src/const_eval')
-rw-r--r--compiler/rustc_const_eval/src/const_eval/fn_queries.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_const_eval/src/const_eval/fn_queries.rs b/compiler/rustc_const_eval/src/const_eval/fn_queries.rs
index cc39387c41f..4ee4ebbb9e4 100644
--- a/compiler/rustc_const_eval/src/const_eval/fn_queries.rs
+++ b/compiler/rustc_const_eval/src/const_eval/fn_queries.rs
@@ -40,7 +40,7 @@ fn constness(tcx: TyCtxt<'_>, def_id: LocalDefId) -> hir::Constness {
         | hir::Node::AnonConst(_)
         | hir::Node::ConstBlock(_)
         | hir::Node::ImplItem(hir::ImplItem { kind: hir::ImplItemKind::Const(..), .. }) => hir::Constness::Const,
-        hir::Node::Item(hir::Item { kind: hir::ItemKind::Impl(impl_), .. }) => impl_.constness,
+        hir::Node::Item(hir::Item { kind: hir::ItemKind::Impl(_), .. }) => tcx.generics_of(def_id).host_effect_index.map_or(hir::Constness::NotConst, |_| hir::Constness::Const),
         hir::Node::ForeignItem(hir::ForeignItem { kind: hir::ForeignItemKind::Fn(..), .. }) => {
             // Intrinsics use `rustc_const_{un,}stable` attributes to indicate constness. All other
             // foreign items cannot be evaluated at compile-time.