diff --git a/Analysis/DeadStores.cpp b/Analysis/DeadStores.cpp
index 62ab157..564478d 100644
--- a/Analysis/DeadStores.cpp
+++ b/Analysis/DeadStores.cpp
@@ -17,12 +17,13 @@
 #include "clang/Analysis/Visitors/CFGRecStmtVisitor.h"
 #include "clang/Basic/Diagnostic.h"
 #include "clang/AST/ASTContext.h"
+#include "llvm/Support/Compiler.h"
 
 using namespace clang;
 
 namespace {
   
-class DeadStoreObs : public LiveVariables::ObserverTy {
+class VISIBILITY_HIDDEN DeadStoreObs : public LiveVariables::ObserverTy {
   ASTContext &Ctx;
   Diagnostic &Diags;
 public:
diff --git a/Analysis/LiveVariables.cpp b/Analysis/LiveVariables.cpp
index a11ca76..9218653 100644
--- a/Analysis/LiveVariables.cpp
+++ b/Analysis/LiveVariables.cpp
@@ -19,6 +19,7 @@
 #include "clang/Analysis/Visitors/CFGRecStmtDeclVisitor.h"
 #include "clang/Analysis/FlowSensitive/DataflowSolver.h"
 #include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/Support/Compiler.h"
 
 #include <string.h>
 #include <stdio.h>
@@ -30,7 +31,9 @@
 //===----------------------------------------------------------------------===//      
 
 namespace {
-class RegisterDecls : public CFGRecStmtDeclVisitor<RegisterDecls> {  
+class VISIBILITY_HIDDEN RegisterDecls 
+  : public CFGRecStmtDeclVisitor<RegisterDecls> {
+    
   LiveVariables::AnalysisDataTy& AD;
 public:
   RegisterDecls(LiveVariables::AnalysisDataTy& ad) : AD(ad) {}  
@@ -53,7 +56,7 @@
 static const bool Alive = true;
 static const bool Dead = false;  
 
-class TransferFuncs : public CFGRecStmtVisitor<TransferFuncs> {
+class VISIBILITY_HIDDEN TransferFuncs : public CFGRecStmtVisitor<TransferFuncs>{
   LiveVariables::AnalysisDataTy& AD;
   LiveVariables::ValTy LiveState;
 public:
diff --git a/Analysis/UninitializedValues.cpp b/Analysis/UninitializedValues.cpp
index 7f2dffc..25bcb86 100644
--- a/Analysis/UninitializedValues.cpp
+++ b/Analysis/UninitializedValues.cpp
@@ -17,6 +17,7 @@
 #include "clang/Basic/Diagnostic.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/Analysis/FlowSensitive/DataflowSolver.h"
+#include "llvm/Support/Compiler.h"
 
 #include "llvm/ADT/SmallPtrSet.h"
 
@@ -28,7 +29,9 @@
 
 namespace {
 
-class RegisterDecls : public CFGRecStmtDeclVisitor<RegisterDecls> {  
+class VISIBILITY_HIDDEN RegisterDecls
+  : public CFGRecStmtDeclVisitor<RegisterDecls> {  
+
   UninitializedValues::AnalysisDataTy& AD;
 public:
   RegisterDecls(UninitializedValues::AnalysisDataTy& ad) :  AD(ad) {}
@@ -49,8 +52,9 @@
 //===----------------------------------------------------------------------===//      
 
 namespace {
-
-class TransferFuncs : public CFGStmtVisitor<TransferFuncs,bool> {
+class VISIBILITY_HIDDEN TransferFuncs
+  : public CFGStmtVisitor<TransferFuncs,bool> {
+    
   UninitializedValues::ValTy V;
   UninitializedValues::AnalysisDataTy& AD;
 public:
@@ -230,7 +234,9 @@
 UninitializedValues_ValueTypes::ObserverTy::~ObserverTy() {}
 
 namespace {
-class UninitializedValuesChecker : public UninitializedValues::ObserverTy {
+class VISIBILITY_HIDDEN UninitializedValuesChecker
+  : public UninitializedValues::ObserverTy {
+    
   ASTContext &Ctx;
   Diagnostic &Diags;
   llvm::SmallPtrSet<BlockVarDecl*,10> AlreadyWarned;