From 4ab00e439768937e4079a27957255086b32a6501 Mon Sep 17 00:00:00 2001
From: Clement Miao <clementmiao@gmail.com>
Date: Fri, 12 Aug 2016 10:15:54 -0700
Subject: [PATCH] updated E0070 to new error format

---
 src/librustc_typeck/check/mod.rs     | 9 +++++++--
 src/test/compile-fail/issue-26093.rs | 1 +
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/librustc_typeck/check/mod.rs b/src/librustc_typeck/check/mod.rs
index 36fdba37061..499b1c64879 100644
--- a/src/librustc_typeck/check/mod.rs
+++ b/src/librustc_typeck/check/mod.rs
@@ -3463,8 +3463,13 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
 
             let tcx = self.tcx;
             if !tcx.expr_is_lval(&lhs) {
-                span_err!(tcx.sess, expr.span, E0070,
-                    "invalid left-hand side expression");
+                struct_span_err!(
+                    tcx.sess, expr.span, E0070,
+                    "invalid left-hand side expression")
+                .span_label(
+                    expr.span,
+                    &format!("left-hand of expression not valid"))
+                .emit();
             }
 
             let lhs_ty = self.expr_ty(&lhs);
diff --git a/src/test/compile-fail/issue-26093.rs b/src/test/compile-fail/issue-26093.rs
index 2f43388b7af..39a53648ccf 100644
--- a/src/test/compile-fail/issue-26093.rs
+++ b/src/test/compile-fail/issue-26093.rs
@@ -12,6 +12,7 @@ macro_rules! not_an_lvalue {
     ($thing:expr) => {
         $thing = 42;
         //~^ ERROR invalid left-hand side expression
+        //~^^ NOTE left-hand of expression not valid
     }
 }