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Wed, 11 Mar 2026 10:49:13 -0700 (PDT) Received: from smtpclient.apple ([185.153.179.56]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82a07365b22sm246861b3a.45.2026.03.11.10.49.12 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 11 Mar 2026 10:49:12 -0700 (PDT) Content-Type: text/plain; charset=utf-8 List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-main@freebsd.org Sender: owner-dev-commits-src-main@FreeBSD.org Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3826.700.81.1.4\)) Subject: Re: git: f26cb4757eb7 - main - LinuxKPI: avoid -Werror=unused-value in sort() from BUILD_BUG_ON_ZERO() From: "Enji Cooper (yaneurabeya)" In-Reply-To: <69a735cf.1c359.19b4d8ff@gitrepo.freebsd.org> Date: Wed, 11 Mar 2026 10:49:02 -0700 Cc: "src-committers@freebsd.org" , "dev-commits-src-all@freebsd.org" , "dev-commits-src-main@freebsd.org" Content-Transfer-Encoding: quoted-printable Message-Id: <016D1851-1087-4014-8A29-77C3C2D9C2A5@gmail.com> References: <69a735cf.1c359.19b4d8ff@gitrepo.freebsd.org> To: Siva Mahadevan X-Mailer: Apple Mail (2.3826.700.81.1.4) X-Spamd-Result: default: False [-3.50 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-0.998]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; MV_CASE(0.50)[]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36:c]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20230601]; MIME_GOOD(-0.10)[text/plain]; RCVD_TLS_LAST(0.00)[]; FROM_HAS_DN(0.00)[]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[gmail.com]; TO_DN_EQ_ADDR_SOME(0.00)[]; FREEMAIL_FROM(0.00)[gmail.com]; TO_DN_SOME(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::435:from]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; RCPT_COUNT_THREE(0.00)[4]; PREVIOUSLY_DELIVERED(0.00)[dev-commits-src-main@freebsd.org]; MID_RHS_MATCH_FROM(0.00)[]; MLMMJ_DEST(0.00)[dev-commits-src-main@freebsd.org]; RCVD_VIA_SMTP_AUTH(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim] X-Rspamd-Queue-Id: 4fWJCg42ttz3g2d X-Spamd-Bar: --- > On Mar 3, 2026, at 11:26=E2=80=AFAM, Siva Mahadevan = wrote: >=20 > The branch main has been updated by siva: >=20 > URL: = https://cgit.FreeBSD.org/src/commit/?id=3Df26cb4757eb74ceace39144933ae198e= bf1b4f28 >=20 > commit f26cb4757eb74ceace39144933ae198ebf1b4f28 > Author: Siva Mahadevan > AuthorDate: 2026-03-03 19:09:35 +0000 > Commit: Siva Mahadevan > CommitDate: 2026-03-03 19:19:32 +0000 >=20 > LinuxKPI: avoid -Werror=3Dunused-value in sort() from = BUILD_BUG_ON_ZERO() >=20 > The BUILD_BUG_ON_ZERO() macro returns an (int)0 if it does not fail > at build time. LinuxKPI sort() has it as a guard for an unsupported > argument but ignores the return value. >=20 > This leads to gcc complaining: >=20 > = /usr/src/sys/compat/linuxkpi/common/include/linux/build_bug.h:60:33: = error: statement with no effect [-Werror=3Dunused-value] > 60 | #define BUILD_BUG_ON_ZERO(x) ((int)sizeof(struct { = int:-((x) !=3D 0); })) > | ^ > /usr/src/sys/compat/linuxkpi/common/include/linux/sort.h:37:9: = note: in expansion of macro 'BUILD_BUG_ON_ZERO' > 37 | BUILD_BUG_ON_ZERO(swap); \ > | ^~~~~~~~~~~~~~~~~ > /usr/src/sys/contrib/dev/rtw89/core.c:2575:9: note: in expansion of = macro 'sort' > 2575 | sort(drift, RTW89_BCN_TRACK_STAT_NR, = sizeof(*drift), cmp_u16, NULL); >=20 > Change to BUILD_BUG_ON() for the statement version. Thank you Siva! My mailbox and the gcc tinderbox build thanks you :).. -Enji=