diff --git a/include/llvm/Pass.h b/include/llvm/Pass.h
index 9663826ccf6..a5c1c61c4bf 100644
--- a/include/llvm/Pass.h
+++ b/include/llvm/Pass.h
@@ -205,6 +205,9 @@ public:
 
 #ifdef USE_OLD_PASSMANAGER
   virtual void addToPassManager(ModulePassManager *PM, AnalysisUsage &AU);
+#else
+  // Force out-of-line virtual method.
+  virtual ~ModulePass();
 #endif
 };
 
@@ -233,6 +236,9 @@ private:
   template<typename Trait> friend class PassManagerT;
   friend class ModulePassManager;
   virtual void addToPassManager(ModulePassManager *PM, AnalysisUsage &AU);
+#else
+  // Force out-of-line virtual method.
+  virtual ~ImmutablePass();
 #endif
 };
 
diff --git a/lib/VMCore/Pass.cpp b/lib/VMCore/Pass.cpp
index 8c5a2f760eb..a3c3d7aa818 100644
--- a/lib/VMCore/Pass.cpp
+++ b/lib/VMCore/Pass.cpp
@@ -171,6 +171,9 @@ void PMDebug::PrintAnalysisSetInfo(unsigned Depth, const char *Msg,
 void ModulePass::addToPassManager(ModulePassManager *PM, AnalysisUsage &AU) {
   PM->addPass(this, AU);
 }
+#else
+// Force out-of-line virtual method.
+ModulePass::~ModulePass() { }
 #endif
 
 bool Pass::mustPreserveAnalysisID(const PassInfo *AnalysisID) const {
@@ -215,6 +218,9 @@ void ImmutablePass::addToPassManager(ModulePassManager *PM,
                                      AnalysisUsage &AU) {
   PM->addPass(this, AU);
 }
+#else
+// Force out-of-line virtual method.
+ImmutablePass::~ImmutablePass() { }
 #endif
 
 //===----------------------------------------------------------------------===//