From: Paul Eggert <eggert@cs.ucla.edu>
Date: Wed, 14 Jun 2023 21:13:35 +0000 (-0700)
Subject: cksum: fix bug in check for cksum_pclmul
X-Git-Tag: v9.4~107
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7814596fa91a07fb2f1d0972f93f26de8a4ad547;p=thirdparty%2Fcoreutils.git

cksum: fix bug in check for cksum_pclmul

This fixes a typo in the previous patch.
Problem reported by Pádraig Brady <https://bugs.gnu.org/64058#11>.
* src/cksum.c (pclmul_supported): Also require AVX support
to use cksum_pclmul.
---

diff --git a/src/cksum.c b/src/cksum.c
index 631ac3449b..e935ba75c8 100644
--- a/src/cksum.c
+++ b/src/cksum.c
@@ -160,7 +160,8 @@ static bool
 pclmul_supported (void)
 {
 # if USE_PCLMUL_CRC32
-  bool pclmul_enabled = 0 < __builtin_cpu_supports ("pclmul");
+  bool pclmul_enabled = (0 < __builtin_cpu_supports ("pclmul")
+                         && 0 < __builtin_cpu_supports ("avx"));
 
   if (cksum_debug)
     error (0, 0, "%s",