1 files changed, 10 insertions, 1 deletions
diff --git a/compiler/rustc_mir_build/src/thir/cx/mod.rs b/compiler/rustc_mir_build/src/thir/cx/mod.rs
index 1d95d6b53..b5c4b7b13 100644
--- a/compiler/rustc_mir_build/src/thir/cx/mod.rs
+++ b/compiler/rustc_mir_build/src/thir/cx/mod.rs
@@ -80,6 +80,9 @@ struct Cx<'tcx> {
     /// for the receiver.
     adjustment_span: Option<(HirId, Span)>,
 
+    /// False to indicate that adjustments should not be applied. Only used for `custom_mir`
+    apply_adjustments: bool,
+
     /// The `DefId` of the owner of this body.
     body_owner: DefId,
 }
@@ -87,6 +90,8 @@ struct Cx<'tcx> {
 impl<'tcx> Cx<'tcx> {
     fn new(tcx: TyCtxt<'tcx>, def: ty::WithOptConstParam<LocalDefId>) -> Cx<'tcx> {
         let typeck_results = tcx.typeck_opt_const_arg(def);
+        let did = def.did;
+        let hir = tcx.hir();
         Cx {
             tcx,
             thir: Thir::new(),
@@ -94,8 +99,12 @@ impl<'tcx> Cx<'tcx> {
             region_scope_tree: tcx.region_scope_tree(def.did),
             typeck_results,
             rvalue_scopes: &typeck_results.rvalue_scopes,
-            body_owner: def.did.to_def_id(),
+            body_owner: did.to_def_id(),
             adjustment_span: None,
+            apply_adjustments: hir
+                .attrs(hir.local_def_id_to_hir_id(did))
+                .iter()
+                .all(|attr| attr.name_or_empty() != rustc_span::sym::custom_mir),
         }
     }