From b3cdee01e9393922188b2c0ff50b6e0fdc74c723 Mon Sep 17 00:00:00 2001
From: Pekka Jaaskelainen <pekka.jaaskelainen@tut.fi>
Date: Thu, 23 Jan 2014 16:21:02 +0000
Subject: [PATCH] Allow clang to compile the "extern" storage class in OpenCL
 1.2.

Patch from Fraser Cormack!

llvm-svn: 199906
---
 clang/lib/Sema/SemaDecl.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index 949526b3edfd..4b82dd35aa17 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -8541,7 +8541,7 @@ void Sema::ActOnUninitializedDecl(Decl *RealDecl,
     // be initialized.
     if (!Var->isInvalidDecl() &&
         Var->getType().getAddressSpace() == LangAS::opencl_constant &&
-        !Var->getInit()) {
+        Var->getStorageClass() != SC_Extern && !Var->getInit()) {
       Diag(Var->getLocation(), diag::err_opencl_constant_no_init);
       Var->setInvalidDecl();
       return;