From 0b94e9d814ee62447e9347c5413d092ad97976fd Mon Sep 17 00:00:00 2001
From: Max Brunsfeld <maxbrunsfeld@gmail.com>
Date: Thu, 13 Jul 2017 13:42:28 -0700
Subject: [PATCH] Don't include preceding production steps in ParseItem hash

---
 src/compiler/build_tables/parse_item.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/compiler/build_tables/parse_item.cc b/src/compiler/build_tables/parse_item.cc
index 55db646c..f06898ac 100644
--- a/src/compiler/build_tables/parse_item.cc
+++ b/src/compiler/build_tables/parse_item.cc
@@ -159,7 +159,7 @@ struct hash<ParseItem> {
         hash_combine<unsigned>(&result, item.production->back().associativity);
       }
     } else {
-      for (size_t i = 0, n = item.production->size(); i < n; i++) {
+      for (size_t i = item.step_index, n = item.production->size(); i < n; i++) {
         auto &step = item.production->at(i);
         hash_combine(&result, step.symbol);
         hash_combine(&result, step.precedence);