From: Michael Schroeder <mls@suse.de>
Date: Mon, 7 Apr 2014 11:06:33 +0000 (+0200)
Subject: add "just in case" code if our multiplier gets too big
X-Git-Tag: 0.6.4~34
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3ffe5b4b1be22466b715eab199992513a40e28f4;p=thirdparty%2Flibsolv.git

add "just in case" code if our multiplier gets too big

I don't think that this can happen the way we use the modulo
code, but I feel somewhat safer with the check in place...
---

diff --git a/ext/solv_pgpvrfy.c b/ext/solv_pgpvrfy.c
index 5dad7422..9bc256ca 100644
--- a/ext/solv_pgpvrfy.c
+++ b/ext/solv_pgpvrfy.c
@@ -70,6 +70,8 @@ mpdomod(int len, mp_t *target, mp2_t x, mp_t *mod)
       /* reduce */
       mp2_t z = x / ((mp2_t)mod[i] + 1);
       mp2_t n = 0;
+      if ((z >> MP_T_BITS) != 0)
+	z = (mp2_t)1 << MP_T_BITS;	/* just in case... */
       for (j = 0; j < i; j++)
 	{
 	  mp_t n2;