From fa094044a98dade4ac2dffe1f1e4383b34bb03ff Mon Sep 17 00:00:00 2001
From: bishtpawan <pawan.bisht@knoldus.com>
Date: Tue, 20 Oct 2020 23:13:21 +0530
Subject: [PATCH] Fix build failure of rustfmt

---
 compiler/rustc_mir_build/src/lints.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/compiler/rustc_mir_build/src/lints.rs b/compiler/rustc_mir_build/src/lints.rs
index bdef02a011b..b588bc1ad83 100644
--- a/compiler/rustc_mir_build/src/lints.rs
+++ b/compiler/rustc_mir_build/src/lints.rs
@@ -71,11 +71,12 @@ fn is_recursive_call(&self, func: &Operand<'tcx>) -> bool {
 
         let func_ty = func.ty(body, tcx);
         if let ty::FnDef(callee, substs) = *func_ty.kind() {
+            let normalized_substs = tcx.normalize_erasing_regions(param_env, substs);
             let (callee, call_substs) =
-                if let Ok(Some(instance)) = Instance::resolve(tcx, param_env, callee, substs) {
+                if let Ok(Some(instance)) = Instance::resolve(tcx, param_env, callee, normalized_substs) {
                     (instance.def_id(), instance.substs)
                 } else {
-                    (callee, substs)
+                    (callee, normalized_substs)
                 };
 
             // FIXME(#57965): Make this work across function boundaries