From a056d5869e808b7f26cb536eca1aadda26a8188f Mon Sep 17 00:00:00 2001
From: Guillaume Gomez <guillaume1.gomez@gmail.com>
Date: Wed, 9 Sep 2015 12:08:21 +0200
Subject: [PATCH] Add error code for tuple struct constructor error

---
 src/librustc_privacy/diagnostics.rs | 24 ++++++++++++++++++++++++
 src/librustc_privacy/lib.rs         |  6 +++---
 2 files changed, 27 insertions(+), 3 deletions(-)

diff --git a/src/librustc_privacy/diagnostics.rs b/src/librustc_privacy/diagnostics.rs
index 78f5cc4bbf2..ac83ee2b029 100644
--- a/src/librustc_privacy/diagnostics.rs
+++ b/src/librustc_privacy/diagnostics.rs
@@ -125,4 +125,28 @@ To fix this error, please remove the visibility qualifier when it is not
 required.
 "##,
 
+E0450: r##"
+A tuple constructor was invoked while some of its fields are private. Erroneous
+code example:
+
+```
+mod Bar {
+    pub struct Foo(isize);
+}
+
+let f = Bar::Foo(0); // error: cannot invoke tuple struct constructor with
+                     //        private fields
+```
+
+To solve this issue, please ensure that all tuple's fields are public. Example:
+
+```
+mod Bar {
+    pub struct Foo(pub isize); // we set its field to public
+}
+
+let f = Bar::Foo(0); // ok!
+```
+"##,
+
 }
\ No newline at end of file
diff --git a/src/librustc_privacy/lib.rs b/src/librustc_privacy/lib.rs
index 2dbab840ba2..9f5387dd9d6 100644
--- a/src/librustc_privacy/lib.rs
+++ b/src/librustc_privacy/lib.rs
@@ -931,9 +931,9 @@ impl<'a, 'tcx, 'v> Visitor<'v> for PrivacyVisitor<'a, 'tcx> {
                         });
 
                     if any_priv {
-                        self.tcx.sess.span_err(expr.span,
-                                               "cannot invoke tuple struct constructor \
-                                                with private fields");
+                        span_err!(self.tcx.sess, expr.span, E0450,
+                                  "cannot invoke tuple struct constructor with private \
+                                   fields");
                     }
                 }
             }