From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Po Lu via "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#72145: rare Emacs screwups on x86 due to GCC bug 58416 Date: Thu, 18 Jul 2024 10:39:42 +0800 Message-ID: <87msmfxw29.fsf@yahoo.com> References: <87ttgoygvd.fsf@yahoo.com> <555e555d-49d5-40b4-9c32-3d063032e0fd@cs.ucla.edu> <6f37e80e-6226-428c-a89d-e6fda856e32d@cs.ucla.edu> Reply-To: Po Lu Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="40878"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: 72145@debbugs.gnu.org To: Paul Eggert Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Jul 18 04:41:13 2024 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1sUH4y-000AJw-OH for geb-bug-gnu-emacs@m.gmane-mx.org; 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Hermes SMTP Server) with ESMTPA ID 0f77514dbfe598efd080c72f21abd4d5; Thu, 18 Jul 2024 02:39:48 +0000 (UTC) In-Reply-To: <6f37e80e-6226-428c-a89d-e6fda856e32d@cs.ucla.edu> (Paul Eggert's message of "Wed, 17 Jul 2024 14:56:49 -0700") X-Mailer: WebService/1.1.22501 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:288940 Archived-At: Paul Eggert writes: > On 2024-07-16 22:01, Paul Eggert wrote: >> We could add an AC_RUN_IFELSE test for SSE2, though I doubt whether >> it would affect builds significantly in practice. > > On second thought the rare Arch or Gentoo user could still be building > Emacs for the Pentium III, and for such a user a run-time test on the > build host would be a win. This can be done via the attached revised > patch. It uses AC_LINK_IFELSE to compile and run a single program, > instead of AC_RUN_IFELSE which (when combined with AC_COMPILE_IFELSE) > would mean compiling two test programs and running one. I'm thinking of the computer where I produce binaries for Windows 9X, which, being a Windows 98 system, probably does not support SSE2.