diff --git a/include/llvm/CodeGen/AsmPrinter.h b/include/llvm/CodeGen/AsmPrinter.h
index 105d773..f3ca306 100644
--- a/include/llvm/CodeGen/AsmPrinter.h
+++ b/include/llvm/CodeGen/AsmPrinter.h
@@ -114,6 +114,9 @@
     mutable const MachineInstr *LastMI;
     mutable const Function *LastFn;
     mutable unsigned Counter;
+    
+    // Private state for processDebugLock()
+    mutable DebugLocTuple PrevDLT;
 
   protected:
     explicit AsmPrinter(raw_ostream &o, TargetMachine &TM,
diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index e1c48cd..bc3af9a 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -45,7 +45,8 @@
                        const TargetAsmInfo *T, CodeGenOpt::Level OL, bool VDef)
   : MachineFunctionPass(&ID), FunctionNumber(0), OptLevel(OL), O(o),
     TM(tm), TAI(T), TRI(tm.getRegisterInfo()),
-    IsInTextSection(false), LastMI(0), LastFn(0), Counter(~0U) {
+    IsInTextSection(false), LastMI(0), LastFn(0), Counter(~0U),
+    PrevDLT(0, ~0U, ~0U) {
   DW = 0; MMI = 0;
   switch (AsmVerbose) {
   case cl::BOU_UNSET: VerboseAsm = VDef;  break;
@@ -1338,7 +1339,6 @@
 void AsmPrinter::processDebugLoc(DebugLoc DL) {
   if (TAI->doesSupportDebugInformation() && DW->ShouldEmitDwarfDebug()) {
     if (!DL.isUnknown()) {
-      static DebugLocTuple PrevDLT(0, ~0U, ~0U);
       DebugLocTuple CurDLT = MF->getDebugLocTuple(DL);
 
       if (CurDLT.CompileUnit != 0 && PrevDLT != CurDLT)