# 
# patch "file_io.cc"
#  from [11a614b3266a45b699b2fcd8bd8a544df7216fdf]
#    to [43cc14528462a56e9f30200e24b6c2679945b434]
# 
# patch "file_io.hh"
#  from [6d4b568f339a9c8fbb429a9f75322e795fedd8c0]
#    to [8a8dcea0d9950cfcad01cb28c34690d09ee53d83]
# 
========================================================================
--- file_io.cc	11a614b3266a45b699b2fcd8bd8a544df7216fdf
+++ file_io.cc	43cc14528462a56e9f30200e24b6c2679945b434
@@ -456,6 +456,9 @@
 
 }
 
+void
+tree_walker::visit_dir(file_path const & path) {}
+
 tree_walker::~tree_walker() {}
 
 static void 
========================================================================
--- file_io.hh	6d4b568f339a9c8fbb429a9f75322e795fedd8c0
+++ file_io.hh	8a8dcea0d9950cfcad01cb28c34690d09ee53d83
@@ -98,7 +98,7 @@
 class tree_walker
 {
 public:
-  virtual void visit_dir(file_path const & path) {};
+  virtual void visit_dir(file_path const & path);
   virtual void visit_file(file_path const & path) = 0;
   virtual ~tree_walker();
 };