diff --git a/include/llvm/Analysis/DIBuilder.h b/include/llvm/Analysis/DIBuilder.h
index 3785fa8..5190f0a 100644
--- a/include/llvm/Analysis/DIBuilder.h
+++ b/include/llvm/Analysis/DIBuilder.h
@@ -343,7 +343,7 @@
 
     /// createForwardDecl - Create a temporary forward-declared type.
     DIType createForwardDecl(unsigned Tag, StringRef Name, DIFile F,
-                             unsigned Line);
+                             unsigned Line, unsigned RuntimeLang = 0);
 
     /// retainType - Retain DIType in a module even if it is not referenced 
     /// through debug info anchors.
diff --git a/lib/Analysis/DIBuilder.cpp b/lib/Analysis/DIBuilder.cpp
index 9dd99b6..f0bdc48 100644
--- a/lib/Analysis/DIBuilder.cpp
+++ b/lib/Analysis/DIBuilder.cpp
@@ -672,7 +672,7 @@
 /// createForwardDecl - Create a temporary forward-declared type that
 /// can be RAUW'd if the full type is seen.
 DIType DIBuilder::createForwardDecl(unsigned Tag, StringRef Name, DIFile F,
-                                    unsigned Line) {
+                                    unsigned Line, unsigned RuntimeLang) {
   // Create a temporary MDNode.
   Value *Elts[] = {
     GetTagConstant(VMContext, Tag),
@@ -685,7 +685,10 @@
     ConstantInt::get(Type::getInt32Ty(VMContext), 0),
     ConstantInt::get(Type::getInt32Ty(VMContext), 0),
     ConstantInt::get(Type::getInt32Ty(VMContext),
-                     DIDescriptor::FlagFwdDecl)
+                     DIDescriptor::FlagFwdDecl),
+    NULL,
+    DIArray(),
+    ConstantInt::get(Type::getInt32Ty(VMContext), RuntimeLang)
   };
   MDNode *Node = MDNode::getTemporary(VMContext, Elts);
   return DIType(Node);