2 files changed, 8 insertions, 1 deletions
diff --git a/lib/AST/Decl.cpp b/lib/AST/Decl.cpp
index 8521b9b44e..f29417ed13 100644
--- a/lib/AST/Decl.cpp
+++ b/lib/AST/Decl.cpp
@@ -164,6 +164,13 @@ FileScopeAsmDecl *FileScopeAsmDecl::Create(ASTContext &C,
 // ScopedDecl Implementation
 //===----------------------------------------------------------------------===//
 
+void ScopedDecl::setDeclContext(DeclContext *DC) {
+  if (isOutOfSemaDC())
+    delete getMultipleDC();
+  
+  DeclCtx = reinterpret_cast<uintptr_t>(DC);
+}
+
 void ScopedDecl::setLexicalDeclContext(DeclContext *DC) {
   if (DC == getLexicalDeclContext())
     return;
diff --git a/lib/AST/DeclBase.cpp b/lib/AST/DeclBase.cpp
index f1ce3f3d0d..d9765ac4b4 100644
--- a/lib/AST/DeclBase.cpp
+++ b/lib/AST/DeclBase.cpp
@@ -514,6 +514,7 @@ DeclContext *DeclContext::getNextContext() {
 }
 
 void DeclContext::addDecl(ASTContext &Context, ScopedDecl *D, bool AllowLookup) {
+  assert(D->getLexicalDeclContext() == this && "Decl inserted into wrong lexical context");
   Decls.push_back(D);
   if (AllowLookup)
     D->getDeclContext()->insert(Context, D);
@@ -599,7 +600,6 @@ void DeclContext::insert(ASTContext &Context, ScopedDecl *D) {
   if (LookupPtr.getPointer())
     insertImpl(D);
 
-
   // If we are a transparent context, insert into our parent context,
   // too. This operation is recursive.
   if (isTransparentContext())