From 587bbe998ca88d99af697f31807b89ef01a3d1dc Mon Sep 17 00:00:00 2001
From: Max Brunsfeld <maxbrunsfeld@gmail.com>
Date: Tue, 6 Sep 2016 10:23:26 -0700
Subject: [PATCH] Don't reuse non-trivial subtrees when stack is split

---
 src/runtime/parser.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/runtime/parser.c b/src/runtime/parser.c
index 2eba4663..ae34d6ab 100644
--- a/src/runtime/parser.c
+++ b/src/runtime/parser.c
@@ -170,7 +170,8 @@ static bool parser__breakdown_lookahead(Parser *self, TSTree **lookahead,
                                         ReusableNode *reusable_node) {
   bool result = false;
   while (reusable_node->tree->child_count > 0 &&
-         (reusable_node->tree->parse_state != state ||
+         (self->is_split ||
+          reusable_node->tree->parse_state != state ||
           reusable_node->tree->fragile_left ||
           reusable_node->tree->fragile_right)) {
     LOG("state_mismatch sym:%s", SYM_NAME(reusable_node->tree->symbol));