From 07d2f56717ba90a3d52d9f0de560435b495d99b6 Mon Sep 17 00:00:00 2001
From: Richard Smith <richard-llvm@metafoo.co.uk>
Date: Tue, 17 Apr 2012 01:04:22 +0000
Subject: [PATCH] Link to a tiny patch to libstdc++-4.7 to work around the
 <chrono> issues from the C++ status page.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154890 91177308-0d34-0410-b5e6-96231b3b80d8
---
 www/cxx_status.html            |  5 +++--
 www/libstdc++4.7-clang11.patch | 13 +++++++++++++
 2 files changed, 16 insertions(+), 2 deletions(-)
 create mode 100644 www/libstdc++4.7-clang11.patch

diff --git a/www/cxx_status.html b/www/cxx_status.html
index 7c319ee42c46..a2ef96770634 100644
--- a/www/cxx_status.html
+++ b/www/cxx_status.html
@@ -40,8 +40,9 @@ <h2 id="cxx11">C++11 implementation status</h2>
 
 <p>You can use Clang in C++11 mode either
 with <a href="http://libcxx.llvm.org/">libc++</a> or with gcc's libstdc++.
-libstdc++-4.4 requires <a href="libstdc++4.4-clang0x.patch">a patch</a> to work
-with clang; other versions have not been tested.</p>
+Patches are needed to make <a href="libstdc++4.4-clang0x.patch">libstdc++-4.4</a>
+and <a href="libstdc++4.7-clang11.patch">libstdc++-4.7</a> work with Clang in
+C++11 mode.</p>
 
 <table width="689" border="1" cellspacing="0">
  <tr>
diff --git a/www/libstdc++4.7-clang11.patch b/www/libstdc++4.7-clang11.patch
new file mode 100644
index 000000000000..3f0300725df3
--- /dev/null
+++ b/www/libstdc++4.7-clang11.patch
@@ -0,0 +1,13 @@
+Index: include/std/type_traits
+===================================================================
+--- include/std/type_traits	(revision 185724)
++++ include/std/type_traits	(working copy)
+@@ -1746,7 +1746,7 @@
+ 
+   template<typename _Tp, typename _Up>
+     struct common_type<_Tp, _Up>
+-    { typedef decltype(true ? declval<_Tp>() : declval<_Up>()) type; };
++    { typedef typename decay<decltype(true ? declval<_Tp>() : declval<_Up>())>::type type; };
+ 
+   template<typename _Tp, typename _Up, typename... _Vp>
+     struct common_type<_Tp, _Up, _Vp...>