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-rw-r--r--compiler/rustc_middle/src/mir/mod.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_middle/src/mir/mod.rs b/compiler/rustc_middle/src/mir/mod.rs
index 63b8dd055bd..bc3c38fdb1c 100644
--- a/compiler/rustc_middle/src/mir/mod.rs
+++ b/compiler/rustc_middle/src/mir/mod.rs
@@ -2506,7 +2506,7 @@ impl<'tcx> ConstantKind<'tcx> {
 
         let hir_id = tcx.hir().local_def_id_to_hir_id(def.did);
         let parent_substs = if let Some(parent_hir_id) = tcx.hir().opt_parent_id(hir_id) {
-            if let Some(parent_did) = tcx.hir().opt_local_def_id(parent_hir_id) {
+            if let Some(parent_did) = parent_hir_id.as_owner() {
                 InternalSubsts::identity_for_item(tcx, parent_did.to_def_id())
             } else {
                 tcx.mk_substs(Vec::<GenericArg<'tcx>>::new().into_iter())