From 33a9840e4a2db7b5136850f23b0185a7d0a6c9c9 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Mon, 25 Mar 2019 20:28:21 +0900
Subject: Need to check length before packing a symbol; fix #4340

---
 src/symbol.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src')

diff --git a/src/symbol.c b/src/symbol.c
index 87c4ca11e..561c5e2fb 100644
--- a/src/symbol.c
+++ b/src/symbol.c
@@ -53,6 +53,7 @@ sym_inline_pack(const char *name, uint16_t len)
     if (p == 0) return 0;       /* non alnum char */
     bits = (uint32_t)(p - pack_table)+1;
     if (bits > 27) lower = 0;
+    if (i >= mix_length_max) break;
     sym |= bits<<(i*6+2);
   }
   if (lower) {
-- 
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