From: Rudolf Polzer <divverent@xonotic.org>
Date: Fri, 29 Apr 2011 11:59:28 +0000 (+0200)
Subject: fix possible overrun
X-Git-Tag: xonotic-v0.5.0~4
X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=c4fbf7a36539cc7e71d4fb6eea03229a53b35a97;p=xonotic%2Fd0_blind_id.git

fix possible overrun
---

diff --git a/d0_bignum-tommath.c b/d0_bignum-tommath.c
index 966bd05..414d5af 100644
--- a/d0_bignum-tommath.c
+++ b/d0_bignum-tommath.c
@@ -177,7 +177,8 @@ ssize_t d0_bignum_export_unsigned(const d0_bignum_t *bignum, void *buf, size_t b
 		memset(buf, 0, bufsize - count);
 		buf += bufsize - count;
 	}
-	mp_to_unsigned_bin_n(&bignum->z, buf, &count);
+	bufsize = count;
+	mp_to_unsigned_bin_n(&bignum->z, buf, &bufsize);
 	if(bufsize > count)
 	{
 		// REALLY BAD