1 files changed, 4 insertions, 0 deletions
diff --git a/src/processor/postfix_evaluator_unittest.cc b/src/processor/postfix_evaluator_unittest.cc
index 516be518..f1189828 100644
--- a/src/processor/postfix_evaluator_unittest.cc
+++ b/src/processor/postfix_evaluator_unittest.cc
@@ -31,6 +31,7 @@
 //
 // Author: Mark Mentovai
 
+#include <assert.h>
 #include <stdio.h>
 
 #include <map>
@@ -75,6 +76,9 @@ class FakeMemoryRegion : public MemoryRegion {
     *value = address + 1;
     return true;
   }
+  virtual void Print() const {
+    assert(false);
+  }
 };