1 files changed, 6 insertions, 0 deletions
diff --git a/lib/VMCore/PassManager.cpp b/lib/VMCore/PassManager.cpp
index 1aaf765ca4..88c4186e36 100644
--- a/lib/VMCore/PassManager.cpp
+++ b/lib/VMCore/PassManager.cpp
@@ -223,6 +223,7 @@ namespace llvm {
 class FunctionPassManagerImpl : public Pass,
                                 public PMDataManager,
                                 public PMTopLevelManager {
+  virtual void anchor();
 private:
   bool wasRun;
 public:
@@ -291,6 +292,8 @@ public:
   }
 };
 
+void FunctionPassManagerImpl::anchor() {}
+
 char FunctionPassManagerImpl::ID = 0;
 
 //===----------------------------------------------------------------------===//
@@ -384,6 +387,7 @@ char MPPassManager::ID = 0;
 class PassManagerImpl : public Pass,
                         public PMDataManager,
                         public PMTopLevelManager {
+  virtual void anchor();
 
 public:
   static char ID;
@@ -437,6 +441,8 @@ public:
   }
 };
 
+void PassManagerImpl::anchor() {}
+
 char PassManagerImpl::ID = 0;
 } // End of llvm namespace