1 files changed, 1 insertions, 0 deletions
diff --git a/staptree.h b/staptree.h
index d357fc7d..dd53c42e 100644
--- a/staptree.h
+++ b/staptree.h
@@ -14,6 +14,7 @@
 #include <iostream>
 #include <stdexcept>
 
+extern bool verbose;
 
 struct token; // parse.h
 struct semantic_error: public std::runtime_error