From 145fb9698929d247dffb35189397a3daff497431 Mon Sep 17 00:00:00 2001
From: Matt Johnston <matt@ucc.asn.au>
Date: Mon, 5 Mar 2018 16:50:24 +0800
Subject: [PATCH] Don't read uninitialised value. From
 https://github.com/libtom/libtommath/commit/1d03522625f46214733e8e143a4765c01fc146f9

---
 libtommath/bn_fast_s_mp_mul_digs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libtommath/bn_fast_s_mp_mul_digs.c b/libtommath/bn_fast_s_mp_mul_digs.c
index a1015af..783e7ca 100644
--- a/libtommath/bn_fast_s_mp_mul_digs.c
+++ b/libtommath/bn_fast_s_mp_mul_digs.c
@@ -87,7 +87,7 @@ int fast_s_mp_mul_digs (mp_int * a, mp_int * b, mp_int * c, int digs)
   {
     mp_digit *tmpc;
     tmpc = c->dp;
-    for (ix = 0; ix < (pa + 1); ix++) {
+    for (ix = 0; ix < pa; ix++) {
       /* now extract the previous digit [below the carry] */
       *tmpc++ = W[ix];
     }