diff --git a/lib/CodeGen/CGCall.cpp b/lib/CodeGen/CGCall.cpp
index fbc421c..f90d31c 100644
--- a/lib/CodeGen/CGCall.cpp
+++ b/lib/CodeGen/CGCall.cpp
@@ -1266,6 +1266,13 @@
     }
 
     case ABIArgInfo::Ignore:
+      // Initialize the local variable appropriately.
+      if (hasAggregateLLVMType(Ty)) { 
+        EmitParmDecl(*Arg, CreateTempAlloca(ConvertType(Ty)));
+      } else {
+        EmitParmDecl(*Arg, llvm::UndefValue::get(ConvertType(Arg->getType())));
+      }
+      
       // Skip increment, no matching LLVM parameter.
       continue;