From: Marco Bettini <marco.bettini@open-xchange.com>
Date: Fri, 26 Nov 2021 13:15:07 +0000 (+0100)
Subject: lib: buffer_truncate_rshift_bits() - Replace signed expression with an unsigned equiv... 
X-Git-Tag: 2.3.18~100
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4a3ef239b42d125427edd97b5fe1e8887365cc91;p=thirdparty%2Fdovecot%2Fcore.git

lib: buffer_truncate_rshift_bits() - Replace signed expression with an unsigned equivalent

Found by code analysis tool
---

diff --git a/src/lib/buffer.c b/src/lib/buffer.c
index f6f3a0f9ec..64255b5027 100644
--- a/src/lib/buffer.c
+++ b/src/lib/buffer.c
@@ -476,7 +476,7 @@ buffer_truncate_rshift_bits(buffer_t *buf, size_t bits)
 
 	if (bits > 0) {
 		/* truncate it to closest byte boundary */
-		size_t bytes = ((bits + 7) & -8U)/8;
+		size_t bytes = ((bits + 7) & ~(size_t)7) / 8;
 		/* remaining bits */
 		bits = bits % 8;
 		buffer_set_used_size(buf, I_MIN(bytes, buf->used));