From c4268f67d052aa55f9cce3307d846285f1e6519b Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby-lang.org>
Date: Mon, 19 May 2014 18:43:32 +0900
Subject: [PATCH] UINT16_MAX as symbol length is reserved; ref #2294

---
 src/symbol.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/symbol.c b/src/symbol.c
index cf8f549c56..148adc6fe6 100644
--- a/src/symbol.c
+++ b/src/symbol.c
@@ -43,7 +43,7 @@ sym_intern(mrb_state *mrb, const char *name, size_t len, mrb_bool lit)
   mrb_sym sym;
   char *p;
 
-  if (len > UINT16_MAX) {
+  if (len > (UINT16_MAX-1)) {   /* UINT16_MAX is reverved */
     mrb_raise(mrb, E_ARGUMENT_ERROR, "symbol length too long");
   }
   sname.lit = lit;