Regexp logging and stl

src/jsregexp.h

Index: src/jsregexp.h
diff --git a/src/jsregexp.h b/src/jsregexp.h
index 38357d670ce86ce3aee98c27ec81f5db3046af46..3ab6651632f537b93210610649c2687a3b54379c 100644
--- a/src/jsregexp.h
+++ b/src/jsregexp.h
@@ -467,7 +467,8 @@ struct NodeInfo {
         at_end(false),
         follows_word(UNKNOWN),
         follows_newline(UNKNOWN),
-        follows_start(UNKNOWN) { }
+        follows_start(UNKNOWN),
+        visited(false) { }
 
   // Returns true if the interests and assumptions of this node
   // matches the given one.
@@ -566,6 +567,8 @@ struct NodeInfo {
   TriBool follows_word: 2;
   TriBool follows_newline: 2;
   TriBool follows_start: 2;
+
+  bool visited: 1;
 };