From 257dacd7bb74a45a9628d43cf232394e7909c0d4 Mon Sep 17 00:00:00 2001
From: Sergey Lyubka <valenok@gmail.com>
Date: Mon, 30 Dec 2013 11:43:07 +0000
Subject: [PATCH] Squashed warning about dangerous optimization
---
mongoose.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/mongoose.c b/mongoose.c
index 4de79c5f2..9ea78be3c 100644
--- a/mongoose.c
+++ b/mongoose.c
@@ -1347,8 +1347,10 @@ static void SHA1Transform(uint32_t state[5], const unsigned char buffer[64]) {
state[2] += c;
state[3] += d;
state[4] += e;
- a = b = c = d = e = 0;
- memset(block, '\0', sizeof(block));
+ // Erase working structures. The order of operations is important,
+ // used to ensure that compiler doesn't optimize those out.
+ memset(block, 0, sizeof(block));
+ a = b = c = d = e = block[0].l[0];
}
static void SHA1Init(SHA1_CTX* context) {
--
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