From 2bb292fccf9560b2c885b4368e5c5fc3fe2a2bda Mon Sep 17 00:00:00 2001
From: ngoto <ngoto@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 15 Jul 2016 12:35:52 +0000
Subject: * string.c (str_buf_cat): Fix capa size for embed string.   Fix bug
 in r55547. [Bug #12536]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55691 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 string.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'string.c')

diff --git a/string.c b/string.c
index 4bc4ebfd99..514488fd93 100644
--- a/string.c
+++ b/string.c
@@ -2570,7 +2570,7 @@ str_buf_cat(VALUE str, const char *ptr, long len)
     rb_str_modify(str);
     if (len == 0) return 0;
     if (STR_EMBED_P(str)) {
-	capa = RSTRING_EMBED_LEN_MAX + termlen - 1;
+	capa = RSTRING_EMBED_LEN_MAX + 1 - termlen;
 	sptr = RSTRING(str)->as.ary;
 	olen = RSTRING_EMBED_LEN(str);
     }
-- 
cgit v1.2.3