From fdd8b967c180192fb74bf17f07e2fda040bb9865 Mon Sep 17 00:00:00 2001
From: Sam Radhakrishan <sk09idm@gmail.com>
Date: Thu, 29 Aug 2019 02:43:09 +0530
Subject: [PATCH] Fixes #63976. Incorrect error message.

Fix incorrect error message when accessing
private field of union
---
 src/librustc_typeck/check/expr.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/librustc_typeck/check/expr.rs b/src/librustc_typeck/check/expr.rs
index d139cd4264c8..4943270e193e 100644
--- a/src/librustc_typeck/check/expr.rs
+++ b/src/librustc_typeck/check/expr.rs
@@ -1396,8 +1396,10 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
             self.tcx().sess,
             expr.span,
             E0616,
-            "field `{}` of struct `{}` is private",
+            "field `{}` of `{}` `{}` is private",
             field,
+            if let Some(def_kind) = self.tcx().def_kind(base_did){ def_kind.descr(base_did) }
+            else { " " },
             struct_path
         );
         // Also check if an accessible method exists, which is often what is meant.