From 68f5b34b2c516f66df3a709c33c8bd8a449a95b2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Esteban=20K=C3=BCber?= <esteban@kuber.com.ar>
Date: Wed, 23 May 2018 19:24:57 -0700
Subject: [PATCH] Use crate name for reexported `extern crate` paths

---
 src/librustc/ty/item_path.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/librustc/ty/item_path.rs b/src/librustc/ty/item_path.rs
index 93d78210b1ad..87ace45a905d 100644
--- a/src/librustc/ty/item_path.rs
+++ b/src/librustc/ty/item_path.rs
@@ -169,7 +169,11 @@ impl<'a, 'gcx, 'tcx> TyCtxt<'a, 'gcx, 'tcx> {
 
             let data = cur_def_key.disambiguated_data.data;
             let symbol = data.get_opt_name().map(|n| n.as_str()).unwrap_or_else(|| {
-                Symbol::intern("<unnamed>").as_str()
+                if let DefPathData::CrateRoot = data {  // reexported `extern crate` (#43189)
+                    self.original_crate_name(cur_def.krate).as_str()
+                } else {
+                    Symbol::intern("<unnamed>").as_str()
+                }
             });
             cur_path.push(symbol);