From: Lasse Collin <lasse.collin@tukaani.org>
Date: Wed, 10 Apr 2024 18:56:33 +0000 (+0300)
Subject: liblzma: ARM64 CRC32: Use negation instead of subtracting from 8
X-Git-Tag: v5.7.1alpha~407
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2337f7021c860b026e3e849e60a9ae8d09ec0ea0;p=thirdparty%2Fxz.git

liblzma: ARM64 CRC32: Use negation instead of subtracting from 8

Subtracting from 0 is negation, this just keeps warnings away.

Fixes: 761f5b69a4c778c8bcb09279b845b07c28790575
---

diff --git a/src/liblzma/check/crc32_arm64.h b/src/liblzma/check/crc32_arm64.h
index f9a43155..cd1b355f 100644
--- a/src/liblzma/check/crc32_arm64.h
+++ b/src/liblzma/check/crc32_arm64.h
@@ -51,7 +51,7 @@ crc32_arch_optimized(const uint8_t *buf, size_t size, uint32_t crc)
 
 	// Align the input buffer because this was shown to be
 	// significantly faster than unaligned accesses.
-	const size_t align_amount = my_min(size, (8 - (uintptr_t)buf) & 7);
+	const size_t align_amount = my_min(size, (0U - (uintptr_t)buf) & 7);
 
 	for (const uint8_t *limit = buf + align_amount; buf < limit; ++buf)
 		crc = __crc32b(crc, *buf);