From 0259c5bce2620a2f3def799a11cff5f6b6d38bab Mon Sep 17 00:00:00 2001
From: Max Brunsfeld <maxbrunsfeld@gmail.com>
Date: Fri, 19 Jan 2018 09:52:45 -0800
Subject: [PATCH] Guard against buffer overflow when serializing scanner

/cc philipturnbull
---
 src/scanner.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/scanner.cc b/src/scanner.cc
index 3a7ea80..6a2484d 100644
--- a/src/scanner.cc
+++ b/src/scanner.cc
@@ -28,6 +28,7 @@ struct Scanner {
   }
 
   unsigned serialize(char *buffer) {
+    if (heredoc_delimiter.size() >= TREE_SITTER_SERIALIZATION_BUFFER_SIZE) return 0;
     heredoc_delimiter.copy(buffer, heredoc_delimiter.length());
     return heredoc_delimiter.length();
   }