From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Introducing 'safety' compilation parameter Date: Fri, 10 May 2024 13:17:41 +0300 Message-ID: <86ttj63r96.fsf@gnu.org> References: <86a5kz74yw.fsf@gnu.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="26067"; mail-complaints-to="usenet@ciao.gmane.io" Cc: emacs-devel@gnu.org, monnier@iro.umontreal.ca, mattias.engdegard@gmail.com, stefankangas@gmail.com To: Andrea Corallo Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri May 10 12:18:35 2024 Return-path: Envelope-to: ged-emacs-devel@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 1s5NKk-0006Y2-D1 for ged-emacs-devel@m.gmane-mx.org; Fri, 10 May 2024 12:18:34 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s5NJz-0007tz-Rk; Fri, 10 May 2024 06:17:47 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s5NJy-0007tq-By for emacs-devel@gnu.org; Fri, 10 May 2024 06:17:46 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s5NJx-0000Hv-MH; Fri, 10 May 2024 06:17:45 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=poqOu3c0Irz96/AiNSbDU3EGn3w8d0GKj2nTKdGJz1U=; b=oj/f6LBfIoK0 u+xgAxXnzqOdqewFvBfvowdhltnqO5MMkw3Rrcxcxnt/0T4x8zukxvxSWY4dvyof0WxtDT4HaUQTl Zw5bsZdQ20gWonJFGe+G2peorLeMh5L7VIaQMBcrIDelOYAb9nedaMUzTa4Uf26q3fhADWMkH6T2r H6H1o5Bipj1xha7yi920lygHhc11CQ973nRaCAIMhCMU9uCyAoHgaJo1a3rwS4EC/SQS1mhxS23Rx Xdep+O7YjACBuU8eGzHbD2oUjDv4fiDuEG35zD229oCcR7UmsgKYhHIZHByh3ZgW8uFky/RPGtehS VNYMNWJtcoZpxCIPtHrCPA==; In-Reply-To: (message from Andrea Corallo on Fri, 10 May 2024 03:47:53 -0400) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." 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-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:319125 Archived-At: > From: Andrea Corallo > Cc: emacs-devel@gnu.org, monnier@iro.umontreal.ca, > mattias.engdegard@gmail.com, stefankangas@gmail.com > Date: Fri, 10 May 2024 03:47:53 -0400 > > Eli Zaretskii writes: > > >> From: Andrea Corallo > >> Cc: Eli Zaretskii , monnier@iro.umontreal.ca, > >> mattias.engdegard@gmail.com, stefankangas@gmail.com > >> Date: Tue, 07 May 2024 06:37:50 -0400 > >> > >> I've put in scratch/comp-safety a branch wich introduces 'safety' as > >> compilation parameter. > >> > >> 'safety' can be used similarly to 'native-comp-speed' both as a global > >> variable to influence compilation both as a function declaration. > >> > >> 'safety' justification of existence is ATM being able to control the > >> undefined behaviour being created when function type declaration added > >> by the user is not correct. > >> > >> ATM we can have two values: > >> > >> 1 Emitted code is generated in a safe matter even if function types are > >> miss-declared. > >> 0 Emitted code can misbehave or crash Emacs if function declarations are > >> not correct and the function is native compiled (@pxref{Native > >> Compilation}). > >> > >> 1 is ATM the default. > > > > Is this for Emacs 30 or Emacs 31? > > Hi Eli, > > the question is related to the patch or the defaul value? Both.