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 

llvm-svn: 218780

1 files changed, 3 insertions, 1 deletions

diff --git a/clang/lib/Sema/SemaDeclCXX.cpp b/clang/lib/Sema/SemaDeclCXX.cpp
index b35bca2c84e..ed15012a160 100644
--- a/clang/lib/Sema/SemaDeclCXX.cpp
+++ b/clang/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