diff --git a/llvm/tools/llvm-diff/DiffConsumer.cpp b/llvm/tools/llvm-diff/DiffConsumer.cpp
index d9e1814..0528039 100644
--- a/llvm/tools/llvm-diff/DiffConsumer.cpp
+++ b/llvm/tools/llvm-diff/DiffConsumer.cpp
@@ -44,6 +44,8 @@
 }
 
 
+void Consumer::anchor() { }
+
 void DiffConsumer::printValue(Value *V, bool isL) {
   if (V->hasName()) {
     out << (isa<GlobalValue>(V) ? '@' : '%') << V->getName();