3 files changed, 8 insertions, 0 deletions
diff --git a/include/llvm/InstrTypes.h b/include/llvm/InstrTypes.h
index a1492f3..2529f24 100644
--- a/include/llvm/InstrTypes.h
+++ b/include/llvm/InstrTypes.h
@@ -388,6 +388,7 @@ DEFINE_TRANSPARENT_OPERAND_ACCESSORS(BinaryOperator, Value)
 /// if (isa<CastInst>(Instr)) { ... }
 /// @brief Base class of casting instructions.
 class CastInst : public UnaryInstruction {
+  virtual void anchor();
 protected:
   /// @brief Constructor with insert-before-instruction semantics for subclasses
   CastInst(Type *Ty, unsigned iType, Value *S,
diff --git a/include/llvm/Support/CommandLine.h b/include/llvm/Support/CommandLine.h
index c6b62a8..a2990e4 100644
--- a/include/llvm/Support/CommandLine.h
+++ b/include/llvm/Support/CommandLine.h
@@ -326,6 +326,8 @@ LocationClass<Ty> location(Ty &L) { return LocationClass<Ty>(L); }
 struct GenericOptionValue {
   virtual ~GenericOptionValue() {}
   virtual bool compare(const GenericOptionValue &V) const = 0;
+private:
+  virtual void anchor();
 };
 
 template<class DataType> struct OptionValue;
@@ -416,6 +418,8 @@ struct OptionValue<cl::boolOrDefault> : OptionValueCopy<cl::boolOrDefault> {
     setValue(V);
     return *this;
   }
+private:
+  virtual void anchor();
 };
 
 template<>
@@ -431,6 +435,8 @@ struct OptionValue<std::string> : OptionValueCopy<std::string> {
     setValue(V);
     return *this;
   }
+private:
+  virtual void anchor();
 };
 
 //===----------------------------------------------------------------------===//
diff --git a/include/llvm/User.h b/include/llvm/User.h
index 62bc9f0..d3f4f21 100644
--- a/include/llvm/User.h
+++ b/include/llvm/User.h
@@ -34,6 +34,7 @@ class User : public Value {
   void *operator new(size_t);     // Do not implement
   template <unsigned>
   friend struct HungoffOperandTraits;
+  virtual void anchor();
 protected:
   /// OperandList - This is a pointer to the array of Uses for this User.
   /// For nodes of fixed arity (e.g. a binary operator) this array will live