From c58f6401d0c3d02b6d0da81908dc07c7c732f88c Mon Sep 17 00:00:00 2001
From: Phil Turnbull <philipturnbull@github.com>
Date: Wed, 14 Jun 2017 08:49:38 -0400
Subject: [PATCH] Non-terminal entries always have valid state-ids

---
 src/compiler/parse_table.cc | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/compiler/parse_table.cc b/src/compiler/parse_table.cc
index 8ea1f8c4..ffa57760 100644
--- a/src/compiler/parse_table.cc
+++ b/src/compiler/parse_table.cc
@@ -154,8 +154,7 @@ void ParseState::each_referenced_state(function<void(ParseStateId *)> fn) {
       if ((action.type == ParseActionTypeShift && !action.extra) || action.type == ParseActionTypeRecover)
         fn(&action.state_index);
   for (auto &entry : nonterminal_entries)
-    if (entry.second != (ParseStateId)(-1))
-      fn(&entry.second);
+    fn(&entry.second);
 }
 
 bool ParseState::operator==(const ParseState &other) const {