From b680cd7d05b31be0d458b05232b86bb36f1296a0 Mon Sep 17 00:00:00 2001
From: naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 18 Jan 2011 17:56:10 +0000
Subject: * vsnprintf.c (cvt): set first byte of buf to NUL for the case when  
 no bytes are written to the buf. [ruby-dev:43062]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@30595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 vsnprintf.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'vsnprintf.c')

diff --git a/vsnprintf.c b/vsnprintf.c
index 7c4d4a9749..79bde9f485 100644
--- a/vsnprintf.c
+++ b/vsnprintf.c
@@ -1197,6 +1197,7 @@ cvt(value, ndigits, flags, sign, decpt, ch, length, buf)
 	else {
 	    digits = BSD__dtoa(value, mode, ndigits, decpt, &dsgn, &rve);
 	}
+	buf[0] = 0; /* rve - digits may be 0 */
 	memcpy(buf, digits, rve - digits);
 	xfree(digits);
 	rve = buf + (rve - digits);
-- 
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