diff --git a/lib/CodeGen/CodeGenModule.h b/lib/CodeGen/CodeGenModule.h
index 71cfb64..a1e2efc 100644
--- a/lib/CodeGen/CodeGenModule.h
+++ b/lib/CodeGen/CodeGenModule.h
@@ -259,6 +259,11 @@
   llvm::Constant *EmitConstantExpr(const Expr *E, QualType DestType,
                                    CodeGenFunction *CGF = 0);
 
+  /// EmitNullConstant - Return the result of value-initializing the given
+  /// type, i.e. a null expression of the given type.  This is usually,
+  /// but not always, an LLVM null constant.
+  llvm::Constant *EmitNullConstant(QualType T);
+
   llvm::Constant *EmitAnnotateAttr(llvm::GlobalValue *GV,
                                    const AnnotateAttr *AA, unsigned LineNo);