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Thu, 10 Jul 2025 11:30:33 -0400 (EDT) From: Junio C Hamano To: Johannes Sixt Cc: Carlo Marcelo Arenas =?utf-8?Q?Bel=C3=B3n?= , git@vger.kernel.org, phillip.wood123@gmail.com Subject: Re: What's cooking in git.git (Jul 2025, #02; Mon, 7) In-Reply-To: <51208670-eccc-493f-8a60-2bc9e3a70801@kdbg.org> (Johannes Sixt's message of "Thu, 10 Jul 2025 09:18:04 +0200") References: <668ce4d4-3b60-47e0-a4a5-dbf73efd1e75@kdbg.org> <51208670-eccc-493f-8a60-2bc9e3a70801@kdbg.org> Date: Thu, 10 Jul 2025 08:30:31 -0700 Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Precedence: bulk X-Mailing-List: git@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Johannes Sixt writes: > Am 10.07.25 um 06:25 schrieb Carlo Marcelo Arenas Belón: >> In d28250654f (Windows: Fix signal numbers, 2009-01-22), the value for >> SIGCHLD was changed from 0 to 17 mentioning some sort of POSIX system. >> >> the relevance comes that if I build a program in Windows that calls >> `signal(SIGCHLD)` using that number I get an error back, but nothing >> on errno, but if the number would be instead 20, like in Cygwin/macOS >> suddenly the behaviour changes and we get the expected EINVAL(20) in errno. > >> So do you have any objection on changing the value (which should be otherwise >> unused, and irrelevanted as you pointed out) to 20 then? > > I do not object to change the number. Nevertheless, I would like to > understand why it makes a difference. Yeah, whoever writes the commit that changes the value needs to explain why the change matters, and where the differences come from in the proposed log message. Thanks, all.