From a0031bde3b462b18b6b6d02dda20200743d978d5 Mon Sep 17 00:00:00 2001
From: Fariborz Jahanian <fjahanian@apple.com>
Date: Wed, 1 Oct 2014 18:03:51 +0000
Subject: [PATCH] c++ error recovery. Build a valid AST when trying to recover
 from parse error parsing the default argument. Patch prevents crash after
 spewing 100s of errors caused by someone who forgot to compile in c++11 mode.
 So no test. rdar://18508589

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@218780 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Sema/SemaDeclCXX.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/Sema/SemaDeclCXX.cpp b/lib/Sema/SemaDeclCXX.cpp
index b35bca2c84..ed15012a16 100644
--- a/lib/Sema/SemaDeclCXX.cpp
+++ b/lib/Sema/SemaDeclCXX.cpp
@@ -353,7 +353,9 @@ void Sema::ActOnParamDefaultArgumentError(Decl *param,
   Param->setInvalidDecl();
   UnparsedDefaultArgLocs.erase(Param);
   Param->setDefaultArg(new(Context)
-                       OpaqueValueExpr(EqualLoc, Param->getType(), VK_RValue));
+                       OpaqueValueExpr(EqualLoc,
+                                       Param->getType().getNonReferenceType(),
+                                       VK_RValue));
 }
 
 /// CheckExtraCXXDefaultArguments - Check for any extra default
-- 
2.40.0