220 40239 article Path: news.gmane.org!.POSTED!not-for-mail From: Daniel Gutson Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: more security concerns Date: Fri, 28 Sep 2018 08:13:53 -0300 Lines: 71 Approved: news@gmane.org Message-ID: Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="000000000000ac260d0576ec8de4" X-Trace: blaine.gmane.org 1538133123 11640 195.159.176.226 (28 Sep 2018 11:12:03 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Fri, 28 Sep 2018 11:12:03 +0000 (UTC) To: std-proposals Original-X-From: std-proposals+bncBDE3NBMV6UFBB7MZXDOQKGQEMX3WUZY@isocpp.org Fri Sep 28 13:11:59 2018 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-lj1-f199.google.com ([209.85.208.199]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1g5qgd-0002rT-PB for gclcip-std-proposals@m.gmane.org; Fri, 28 Sep 2018 13:11:55 +0200 Original-Received: by mail-lj1-f199.google.com with SMTP id l11-v6sf1361400ljb.2 for ; Fri, 28 Sep 2018 04:14:06 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1538133246; cv=pass; d=google.com; s=arc-20160816; b=g0gHK9fenxr4mk9YP3KwAJDz7tMFbNcsZaYZkJLBsj7s2lHBuJX6O+ytJY6CJ7CejM mpCrS630lxtYK0hzrkCHejkkaapKEbd5bqlrlQHXZcfrSXI1avG/z4cQIWY+dMulzCao IzatBcY3fv/0yl5L9Hmt16w2dDKwRJ7RDiOuV40Ye1oQK089XPFwOGPHleVwzWRT4lWM uOCGUBZCkhA1JE6voT1MZwxbTqbkayEBzrVfiR5XuVrKJL1HuhdGY3L/OLopy1Qp89mM /Ovca1hUKRBXkQktnMvyGLb2zzCvQowr/4PaNE3SdhJfJxdOzwxrDk8Bjy0QHXhPea1O i2gQ== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-unsubscribe:list-subscribe:list-archive:list-help:list-post :list-id:mailing-list:precedence:reply-to:to:subject:message-id:date :from:mime-version:dkim-signature; bh=yFNVkgtsbBPbvS8CiYtLEl7Xs1jpVzHpFwEk0uGt1aI=; b=0AzZtvbxwIczdSDwXWkifwoJGmKkxSwRTbpRSvPhSpPc8GVAgx/TIOszO+08iaKF4S gK4n+0clGo6uFcZdhna/TL/SiFi7IKbrZ4Hv5UZ6gL4H0BCRDrmWSsvQIXy1Vh6zN2xX CmcVMXWKDjr/V9M5zcLU9kiXVEZTZiA8Rw4NIvmHJLBi8xmhekD+r97Eb9rlEiF7b0eC 89Hx8SASqryiR0PZVwvJQsz9KZdaDslg3thDwMW+tN2RD3fnwXAaUu5dGZQ3tj5kty0e w+5sRVmwGONgbxEu6NAftNfnmmTW9aIdXcuIGPQ7ZSnBRErphdx+mSADuG4M1tbpmB9e B9oQ== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=YWWXYBLX; spf=pass (google.com: domain of danielgutson@gmail.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=danielgutson@gmail.com; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=mime-version:from:date:message-id:subject:to:x-original-sender :x-original-authentication-results:reply-to:precedence:mailing-list :list-id:list-post:list-help:list-archive:list-subscribe :list-unsubscribe; bh=yFNVkgtsbBPbvS8CiYtLEl7Xs1jpVzHpFwEk0uGt1aI=; b=NTzjSbwMWd3jx4IQAOiIS4e5pltlr1qkijOpv3AT7/u6udLfbuaW8jf3uHL6/WrPx2 iCl4oxXQhUqmHy6LHO5Z4W4KP+QvLAaKDhQuV38GxvsFn6TMy0qCkioqOsifqEvFLAIU hGvM2LNS5Z/KirHE3nYVQm1doLBTOumwHYl/7oKJuUQW/E/DEfXtz/Be1Ib20x83brLH Ip7e33S5Xy/ngUfvDtz+DGnR05BC06ZEZg0zwuOs3ZWJ7Rsr54WdlTreFBgFf/4PsGqh eFFmJ+8r64HOiv+eYIJ6h4frxunVBgGc+rc8FzZjD9xjzGsOipHEhzRWHQZOigjfDG67 UB7Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to :x-original-sender:x-original-authentication-results:reply-to :precedence:mailing-list:list-id:x-spam-checked-in-group:list-post :list-help:list-archive:list-subscribe:list-unsubscribe; bh=yFNVkgtsbBPbvS8CiYtLEl7Xs1jpVzHpFwEk0uGt1aI=; b=jg7zD5ukqdyDDLt3fma+QxAe5OrMFjfjxq5ZGCiUW3P5cmly9ERHKujaRRWEnMLtg1 bRU2vBRYSTFhkkkKdD/gql/tUSbzjoD0QmFfg2/oHCjj/yExcjyJxVpQuk39ePPS1BK9 wrsDmZdiiArrwkct26gtXVhbTwJsn+fNKG4MAsl6MkoMqs6FLzHNIO6eys87icMeTyzX K2cZurtKiU9Zu8YSD+UnHDO0S106BU0F7C89IZUUhYNk8tInA9w/GksVtbQUoNEIRm+l nLdctfHvIvElPEHLk+Es50QXhhxHdL3o/3Gwtq2KLovS9Gqnn2xeraO5COxP1l9+IDGR +4qA== X-Gm-Message-State: ABuFfojvFxelj0O27Wmx03Q43K9xlAu6JF2QUWjPIfjed13WOhyas8tt oRjqEWQLIYCioPHakm8FEjE+jQ== X-Google-Smtp-Source: ACcGV63SFfaLq7u6J5xdgkqQC4DJaJGZwrtiGDSBe8ffGqO5mXYrU7mWx6xhATDAvTYT0chFcxyIew== X-Received: by 2002:a2e:5d10:: with SMTP id r16-v6mr61641ljb.17.1538133246457; Fri, 28 Sep 2018 04:14:06 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 2002:a19:161c:: with SMTP id m28-v6ls665477lfi.22.gmail; Fri, 28 Sep 2018 04:14:05 -0700 (PDT) X-Received: by 2002:a19:a2c1:: with SMTP id l184-v6mr10039470lfe.33.1538133245415; Fri, 28 Sep 2018 04:14:05 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1538133245; cv=none; d=google.com; s=arc-20160816; b=YR5mHiQ7gzqTfSaEJszwVnxFCaS4Ta2YPcTBS7jZffEFCAv4WewrbE3P+2ucXGhMRQ Hh3nWb67IwUahyFZjXCx/EQa/i5RhPH9i5Et+FVWou/yiWW+6iMNZ7Vu4gL1q/ODigFN lOOtgSANqjmPuLC+UUvrPrmTnIgC9u5DyZMGn9iwd8gGsX+9Y+RbQ4c/FLNsaSrKNGpi zyeurFfqpnVP457PLL6bbDnFbsziIyI58lt0/MN0hi0K8kV3F13ndip1PIRDM2d3+Cpx T8Qis9zxcOwFkQ5G0rX+HZONpRv/dsMlVjNp2e1O5wMZeZO14LIsO4d15yqdBTK88Gcv JHBQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=to:subject:message-id:date:from:mime-version:dkim-signature; bh=FTDQOxbkPcoJPCYTqxlMsNIJHoJLdMH5ODT1znzjvzI=; b=o0b8pjcmuXlpRYZzEg2QBUuM3L2asYTrU+HRvhAQSmM4JKxmBo/T/N0MgLXOLCgsN9 qi1SRIOfsjNiapLgvQ1nRHRKpJ/ZKbf0j0ud2EEf2SmNzlVebZYlqKY+eVow6PAtR13g idOWbRTBmIJqIpa9/6Rhp/+mgr3LeGRaWMesAYJo3aabG6gbOrVg1LPL5fD2JDsPF2rz IBolfKL/l0A0tyb/4udnTsCnZ05BXqoW2Xr4/OtWxI6EcNNE1Ur7hdSGentLEObsBw+9 hTxryviWjrgUF2h8PFhsNng1n3T8Cyj5xXfvGCqrwbVJsffzhecKDfVldP2L380Ix27C +2KQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=YWWXYBLX; spf=pass (google.com: domain of danielgutson@gmail.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=danielgutson@gmail.com; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Original-Received: from mail-sor-f41.google.com (mail-sor-f41.google.com. [209.85.220.41]) by mx.google.com with SMTPS id r21-v6sor2003403lff.43.2018.09.28.04.14.05 for (Google Transport Security); Fri, 28 Sep 2018 04:14:05 -0700 (PDT) Received-SPF: pass (google.com: domain of danielgutson@gmail.com designates 209.85.220.41 as permitted sender) client-ip=209.85.220.41; X-Received: by 2002:a19:ef05:: with SMTP id n5-v6mr7911794lfh.21.1538133244780; Fri, 28 Sep 2018 04:14:04 -0700 (PDT) X-Original-Sender: danielgutson@gmail.com X-Original-Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=YWWXYBLX; spf=pass (google.com: domain of danielgutson@gmail.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=danielgutson@gmail.com; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Spam-Checked-In-Group: std-proposals@isocpp.org X-Google-Group-Id: 399137483710 List-Post: , List-Help: , List-Archive: List-Subscribe: , List-Unsubscribe: , Xref: news.gmane.org gmane.comp.lang.c++.isocpp.proposals:40239 Archived-At: --000000000000ac260d0576ec8de4 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Again, on the DSE related optimizations. I'm at the Ekoparty where I will show a presentation about security vulnerabilities caused by compiler optimizations. The subject is more and more serious (e.g. [1]). I want to propose to allow [[nodiscard]] in individual expressions, such as calls to memset(), std::fill_n, and assignments (DSE happens with both memory and registers). Ideas? Co-authors? --=20 Who=E2=80=99s got the sweetest disposition? One guess, that=E2=80=99s who? Who=E2=80=99d never, ever start an argument? Who never shows a bit of temperament? Who's never wrong but always right? Who'd never dream of starting a fight? Who get stuck with all the bad luck? --=20 You received this message because you are subscribed to the Google Groups "= ISO C++ Standard - Future Proposals" group. To unsubscribe from this group and stop receiving emails from it, send an e= mail to std-proposals+unsubscribe@isocpp.org. To post to this group, send email to std-proposals@isocpp.org. To view this discussion on the web visit https://groups.google.com/a/isocpp= ..org/d/msgid/std-proposals/CAFdMc-0NqfbqeOhhH1YiVGxDRVPv7COKNqge3mLu8UE8Sgc= XNw%40mail.gmail.com. --000000000000ac260d0576ec8de4 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Again, on the DSE related optimizations.

I'm at the Ekoparty where I will show a presentation about security v= ulnerabilities caused by compiler optimizations. The subject is more and mo= re serious (e.g. [1]).

I want to propose to allow = [[nodiscard]] in individual expressions, such as calls to memset(), std::fi= ll_n, and assignments (DSE happens with both memory and registers).

Ideas? Co-authors?=C2=A0

= --
Who=E2=80=99s got the sweetest disposition?
One guess, that=E2= =80=99s who?
Who=E2=80=99d never, ever start an argument?
Who never s= hows a bit of temperament?
Who's never wrong but always right?
Wh= o'd never dream of starting a fight?
Who get stuck with all the bad = luck?

--
You received this message because you are subscribed to the Google Groups &= quot;ISO C++ Standard - Future Proposals" group.
To unsubscribe from this group and stop receiving emails from it, send an e= mail to std-proposa= ls+unsubscribe@isocpp.org.
To post to this group, send email to std-proposals@isocpp.org.
To view this discussion on the web visit htt= ps://groups.google.com/a/isocpp.org/d/msgid/std-proposals/CAFdMc-0NqfbqeOhh= H1YiVGxDRVPv7COKNqge3mLu8UE8SgcXNw%40mail.gmail.com.
--000000000000ac260d0576ec8de4-- .