From: Vincent JARDIN <vincent.jardin@6wind.com>
Date: Wed, 27 Sep 2017 21:29:49 +0000 (+0200)
Subject: sha256: fix clang warning
X-Git-Tag: frr-4.0-dev~252^2~3
X-Git-Url: https://git.puffer.fish/?a=commitdiff_plain;h=80a5a11bb13e572d05d197526e243c5889ddf39e;p=matthieu%2Ffrr.git

sha256: fix clang warning

t0 and t1 are not used, but want do really want them to be reset to secure
the stack.
Suggested by Quentin: let's use memset() to be consistent.
---

diff --git a/lib/sha256.c b/lib/sha256.c
index a1b77901ee..e902021545 100644
--- a/lib/sha256.c
+++ b/lib/sha256.c
@@ -192,7 +192,8 @@ static void SHA256_Transform(uint32_t *state, const unsigned char block[64])
 	/* Clean the stack. */
 	memset(W, 0, 256);
 	memset(S, 0, 32);
-	t0 = t1 = 0;
+	memset(t0, 0, sizeof(t0));
+	memset(t1, 0, sizeof(t0));
 }
 
 static unsigned char PAD[64] = {