diff --git a/include/llvm/CodeGen/TargetLoweringObjectFileImpl.h b/include/llvm/CodeGen/TargetLoweringObjectFileImpl.h
index 54e5751bd9d..711280e98c9 100644
--- a/include/llvm/CodeGen/TargetLoweringObjectFileImpl.h
+++ b/include/llvm/CodeGen/TargetLoweringObjectFileImpl.h
@@ -52,7 +52,7 @@ protected:
   const MCSection *MergeableConst8Section;
   const MCSection *MergeableConst16Section;
 public:
-  TargetLoweringObjectFileELF() {}
+  TargetLoweringObjectFileELF();
   ~TargetLoweringObjectFileELF() {}
 
   virtual void Initialize(MCContext &Ctx, const TargetMachine &TM);
@@ -131,7 +131,7 @@ class TargetLoweringObjectFileMachO : public TargetLoweringObjectFile {
   const MCSection *LazySymbolPointerSection;
   const MCSection *NonLazySymbolPointerSection;
 public:
-  TargetLoweringObjectFileMachO() {}
+  TargetLoweringObjectFileMachO();
   ~TargetLoweringObjectFileMachO() {}
 
   virtual void Initialize(MCContext &Ctx, const TargetMachine &TM);
@@ -207,7 +207,7 @@ class TargetLoweringObjectFileCOFF : public TargetLoweringObjectFile {
   const MCSection *PDataSection;
   const MCSection *XDataSection;
 public:
-  TargetLoweringObjectFileCOFF() {}
+  TargetLoweringObjectFileCOFF();
   ~TargetLoweringObjectFileCOFF() {}
 
   virtual void Initialize(MCContext &Ctx, const TargetMachine &TM);
diff --git a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index f2eb5cf0f57..a3c562013b5 100644
--- a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -43,6 +43,19 @@ using namespace dwarf;
 //                                  ELF
 //===----------------------------------------------------------------------===//
 
+TargetLoweringObjectFileELF::TargetLoweringObjectFileELF()
+  : TargetLoweringObjectFile(),
+    TLSDataSection(0),
+    TLSBSSSection(0),
+    DataRelSection(0),
+    DataRelLocalSection(0),
+    DataRelROSection(0),
+    DataRelROLocalSection(0),
+    MergeableConst4Section(0),
+    MergeableConst8Section(0),
+    MergeableConst16Section(0) {
+}
+
 void TargetLoweringObjectFileELF::Initialize(MCContext &Ctx,
                                              const TargetMachine &TM) {
   TargetLoweringObjectFile::Initialize(Ctx, TM);
@@ -480,6 +493,27 @@ getExprForDwarfGlobalReference(const GlobalValue *GV, Mangler *Mang,
 //                                 MachO
 //===----------------------------------------------------------------------===//
 
+TargetLoweringObjectFileMachO::TargetLoweringObjectFileMachO()
+  : TargetLoweringObjectFile(),
+    TLSDataSection(0),
+    TLSBSSSection(0),
+    TLSTLVSection(0),
+    TLSThreadInitSection(0),
+    CStringSection(0),
+    UStringSection(0),
+    TextCoalSection(0),
+    ConstTextCoalSection(0),
+    ConstDataSection(0),
+    DataCoalSection(0),
+    DataCommonSection(0),
+    DataBSSSection(0),
+    FourByteConstantSection(0),
+    EightByteConstantSection(0),
+    SixteenByteConstantSection(0),
+    LazySymbolPointerSection(0),
+    NonLazySymbolPointerSection(0) {
+}
+
 void TargetLoweringObjectFileMachO::Initialize(MCContext &Ctx,
                                                const TargetMachine &TM) {
   IsFunctionEHFrameSymbolPrivate = false;
@@ -891,6 +925,13 @@ unsigned TargetLoweringObjectFileMachO::getTTypeEncoding() const {
 //                                  COFF
 //===----------------------------------------------------------------------===//
 
+TargetLoweringObjectFileCOFF::TargetLoweringObjectFileCOFF()
+  : TargetLoweringObjectFile(),
+    DrectveSection(0),
+    PDataSection(0),
+    XDataSection(0) {
+}
+
 void TargetLoweringObjectFileCOFF::Initialize(MCContext &Ctx,
                                               const TargetMachine &TM) {
   TargetLoweringObjectFile::Initialize(Ctx, TM);
diff --git a/lib/Target/TargetLoweringObjectFile.cpp b/lib/Target/TargetLoweringObjectFile.cpp
index 9f87c071643..703431b3806 100644
--- a/lib/Target/TargetLoweringObjectFile.cpp
+++ b/lib/Target/TargetLoweringObjectFile.cpp
@@ -35,32 +35,32 @@ using namespace llvm;
 //                              Generic Code
 //===----------------------------------------------------------------------===//
 
-TargetLoweringObjectFile::TargetLoweringObjectFile() : Ctx(0) {
-  TextSection = 0;
-  DataSection = 0;
-  BSSSection = 0;
-  ReadOnlySection = 0;
-  StaticCtorSection = 0;
-  StaticDtorSection = 0;
-  LSDASection = 0;
-  CompactUnwindSection = 0;
-
-  CommDirectiveSupportsAlignment = true;
-  DwarfAbbrevSection = 0;
-  DwarfInfoSection = 0;
-  DwarfLineSection = 0;
-  DwarfFrameSection = 0;
-  DwarfPubNamesSection = 0;
-  DwarfPubTypesSection = 0;
-  DwarfDebugInlineSection = 0;
-  DwarfStrSection = 0;
-  DwarfLocSection = 0;
-  DwarfARangesSection = 0;
-  DwarfRangesSection = 0;
-  DwarfMacroInfoSection = 0;
-  
-  IsFunctionEHFrameSymbolPrivate = true;
-  SupportsWeakOmittedEHFrame = true;
+TargetLoweringObjectFile::TargetLoweringObjectFile() :
+  Ctx(0),
+  TextSection(0),
+  DataSection(0),
+  BSSSection(0),
+  ReadOnlySection(0),
+  StaticCtorSection(0),
+  StaticDtorSection(0),
+  LSDASection(0),
+  CompactUnwindSection(0),
+  DwarfAbbrevSection(0),
+  DwarfInfoSection(0),
+  DwarfLineSection(0),
+  DwarfFrameSection(0),
+  DwarfPubNamesSection(0),
+  DwarfPubTypesSection(0),
+  DwarfDebugInlineSection(0),
+  DwarfStrSection(0),
+  DwarfLocSection(0),
+  DwarfARangesSection(0),
+  DwarfRangesSection(0),
+  DwarfMacroInfoSection(0),
+  TLSExtraDataSection(0),
+  CommDirectiveSupportsAlignment(true),
+  SupportsWeakOmittedEHFrame(true), 
+  IsFunctionEHFrameSymbolPrivate(true) {
 }
 
 TargetLoweringObjectFile::~TargetLoweringObjectFile() {