[llvm] Add upstream patch for c++11

[Orion Poplawski]

commit 173294e6948f76b67d09278f1b7b879e709ed0d3
Author: Orion Poplawski <orion at cora.nwra.com>
Date:   Mon Feb 16 10:20:52 2015 -0700

    Add upstream patch for c++11

 llvm-IntrusiveRefCntPtr.patch |   12 ++++++++++++
 llvm.spec                     |    3 +++
 2 files changed, 15 insertions(+), 0 deletions(-)
---
diff --git a/llvm-IntrusiveRefCntPtr.patch b/llvm-IntrusiveRefCntPtr.patch
new file mode 100644
index 0000000..38b5d45
--- /dev/null
+++ b/llvm-IntrusiveRefCntPtr.patch
@@ -0,0 +1,12 @@
+--- llvm/trunk/include/llvm/ADT/IntrusiveRefCntPtr.h	2014/09/23 05:23:29	218294
++++ llvm/trunk/include/llvm/ADT/IntrusiveRefCntPtr.h	2014/09/23 06:06:43	218295
+@@ -197,6 +197,9 @@
+   private:
+     void retain() { if (Obj) IntrusiveRefCntPtrInfo<T>::retain(Obj); }
+     void release() { if (Obj) IntrusiveRefCntPtrInfo<T>::release(Obj); }
++
++    template <typename X>
++    friend class IntrusiveRefCntPtr;
+   };
+ 
+   template<class T, class U>
diff --git a/llvm.spec b/llvm.spec
index 95e635f..30611b3 100644
--- a/llvm.spec
+++ b/llvm.spec
@@ -55,6 +55,8 @@ Source11:       llvm-Config-llvm-config.h
 # patches
 Patch1:         llvm-3.5.0-build-fix.patch
 Patch2:         0001-data-install-preserve-timestamps.patch
+# Upstream patch for gcc 5/c++11
+Patch3:         llvm-IntrusiveRefCntPtr.patch
 
 # the next two are various attempts to get clang to actually work on arm
 # by forcing a hard-float ABI.  They don't apply anymore as of 3.5.0,
@@ -320,6 +322,7 @@ mv lldb-*/ tools/lldb
 
 %patch1 -p1
 %patch2 -p1
+%patch3 -p2
 %if %{with clang}
 #patch20 -p1
 #patch22 -p1