From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Po Lu Newsgroups: gmane.emacs.devel Subject: Re: Development Speed Date: Thu, 23 Dec 2021 21:42:02 +0800 Message-ID: <87k0fvh1zp.fsf@yahoo.com> References: <83r1a4yfpt.fsf@gnu.org> <8335mky4rl.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="13881"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.60 (gnu/linux) Cc: eliz@gnu.org, xenodasein@tutanota.de To: xenodasein--- via "Emacs development discussions." 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List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:282953 Archived-At: xenodasein--- via "Emacs development discussions." writes: > Isn't a new compiler compiling old standard more likely to cause > non-compliant behavior, than the one it is developed for? (Assuming > implementation has achieved maturity.) No. If that happens in GCC, then it is a bug. > Then there is VLAs, won't using C99 result in the worse optimization? No, and I think we prefer alloca to VLAs (please correct me if this is not the case though.)