From 6a3dfa4dba2d341b9d93481c3ccf8338248b5d20 Mon Sep 17 00:00:00 2001
From: Vadim Petrochenkov <vadim.petrochenkov@gmail.com>
Date: Fri, 3 Aug 2018 00:43:49 +0300
Subject: [PATCH] privacy: Fix an ICE in `path_is_private_type`

Fixes https://github.com/rust-lang/rust/issues/52879

(Untested.)
---
 src/librustc_privacy/lib.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/librustc_privacy/lib.rs b/src/librustc_privacy/lib.rs
index f32f6eda8ff..e07a0579f41 100644
--- a/src/librustc_privacy/lib.rs
+++ b/src/librustc_privacy/lib.rs
@@ -1005,7 +1005,7 @@ struct ObsoleteCheckTypeForPrivatenessVisitor<'a, 'b: 'a, 'tcx: 'b> {
 impl<'a, 'tcx> ObsoleteVisiblePrivateTypesVisitor<'a, 'tcx> {
     fn path_is_private_type(&self, path: &hir::Path) -> bool {
         let did = match path.def {
-            Def::PrimTy(..) | Def::SelfTy(..) => return false,
+            Def::PrimTy(..) | Def::SelfTy(..) | Def::Err => return false,
             def => def.def_id(),
         };