diff --git a/lib/CodeGen/MachineModuleInfo.cpp b/lib/CodeGen/MachineModuleInfo.cpp
index 8661b9e..b62803f 100644
--- a/lib/CodeGen/MachineModuleInfo.cpp
+++ b/lib/CodeGen/MachineModuleInfo.cpp
@@ -76,6 +76,9 @@
   FilterEnds.clear();
   CallsEHReturn = 0;
   CallsUnwindInit = 0;
+#ifdef ATTACH_DEBUG_INFO_TO_AN_INSN
+  VariableDbgInfo.clear();
+#endif
 }
 
 /// AnalyzeModule - Scan the module for global debug information.