From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Richard Copley Newsgroups: gmane.emacs.devel Subject: Re: Suspicious warning in W64 build Date: Thu, 7 Sep 2017 18:58:23 +0100 Message-ID: References: <1017454172.910810.1504618695244@mail.libero.it> <83tw0ezgi1.fsf@gnu.org> <1146932094.13821.1504798935795@mail.libero.it> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" X-Trace: blaine.gmane.org 1504807175 6801 195.159.176.226 (7 Sep 2017 17:59:35 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 7 Sep 2017 17:59:35 +0000 (UTC) Cc: Eli Zaretskii , Emacs Development To: Angelo Graziosi Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Sep 07 19:59:20 2017 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dq155-0000us-G7 for ged-emacs-devel@m.gmane.org; Thu, 07 Sep 2017 19:59:11 +0200 Original-Received: from localhost ([::1]:41577 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dq15C-00023q-Iu for ged-emacs-devel@m.gmane.org; Thu, 07 Sep 2017 13:59:18 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:33547) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dq14y-000228-Pb for emacs-devel@gnu.org; Thu, 07 Sep 2017 13:59:09 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dq14u-0003GH-1D for emacs-devel@gnu.org; Thu, 07 Sep 2017 13:59:04 -0400 Original-Received: from mail-vk0-x230.google.com ([2607:f8b0:400c:c05::230]:33907) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1dq14o-0003Em-S0; Thu, 07 Sep 2017 13:58:54 -0400 Original-Received: by mail-vk0-x230.google.com with SMTP id o22so706640vke.1; Thu, 07 Sep 2017 10:58:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=lJo1Eu0qWe/Xx0FRISLpPVgWfvfV5RMrtlD6RtFNaSY=; b=LG0+/sEgRgmgJ06xMi6/rxT9Ni3meBSHllyipp2BirFvGt3BwofSvzrA4yIyU9EiiV MgJstfFqwl0+VE6xIOMpMErS4ahlJECl0ooF1cS1cEvlv5GogiY98e+Qjr7CnbwArf4u xlI7XnvgQHKmach2oFpVZPS2XQehiwkwpUsArbni4/SB3BCbSYYMiHEOW8seBomb4Yc+ +jI5kRvAqj1aSouIix0Z79EzHJVpKIWHV1iNPUQBmLJTMHRn/a3MSTDSWVBUAPTXJkv6 h/jb7iqjGm27Tnd87U0Qla2UxLtalM8WDrq3BhP4zm2cMoHnfaUigkD63nF/9jHNOGSQ YXXw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=lJo1Eu0qWe/Xx0FRISLpPVgWfvfV5RMrtlD6RtFNaSY=; b=g5LTVZckNSQQzb2F7j0m3EkYdoq831Gs74Q2umsOBOlsPYVCCnMm1f5+dv5Y1iyOmo K+G2CXJhVz4FM1zzNU9NIQQOpBV87LpnnkiBllnsls2Qy+aeubdkVTcD86oHlItVQVF8 l09gBPmW/Em+8+2V4cYCkr6M0yEIhJMtC3KgmQHXUqV7zJv5OJXKx3wrjlz+u8ougWaK v1BgPqG+L+j26rmzHy8vaBYf3oOMkkdGwlF9+M47IGFQ+3Y3W7+6urjw5cq42NoNje/T sGdl5D47hKtUUqHUlDov8gmksG7tef2kFONVD1uwJt8zSL8Qi5A3qu1wcy4FNMoyR7Dd gWvw== X-Gm-Message-State: AHPjjUjWT4HqWWKE3gEurGnNuoB7MW4uNLMKINCeWixmvXjHGvHVct+T iReo4uVG8/OjuZq1b7E+3X1qOA3pCQ== X-Google-Smtp-Source: AOwi7QA3ndtXKt35l4E/z+SyupjYAYaewY0jErsRAMPAwxdyLk7qv7bVEh4II2ldrtBW9vGrzcD05qFXp1QI3qZNOJg= X-Received: by 10.31.63.12 with SMTP id m12mr105571vka.26.1504807134062; Thu, 07 Sep 2017 10:58:54 -0700 (PDT) Original-Received: by 10.176.81.167 with HTTP; Thu, 7 Sep 2017 10:58:23 -0700 (PDT) In-Reply-To: X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:400c:c05::230 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 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.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:217987 Archived-At: On 7 September 2017 at 18:52, Richard Copley wrote: > On 7 September 2017 at 16:42, Angelo Graziosi wrote: >>> Il 7 settembre 2017 alle 17.16 Eli Zaretskii ha scritto: >>> > Date: Tue, 5 Sep 2017 15:38:15 +0200 (CEST) >>> > From: Angelo Graziosi >>> > >>> > In the log build of current master on MSYS2/MINGW64, I see: >>> > >>> > [...] >>> > CC w32term.o >>> > C:/msys64/tmp/src/src/w32font.c: In function 'w32font_text_extents': >>> > C:/msys64/tmp/src/src/w32font.c:547:9: warning: argument 1 range [18446744065119617024, 18446744073709551612] exceeds maximum object size 9223372036854775807 [-Walloc-size-larger-than=] >>> > wcode = alloca (nglyphs * sizeof (WORD) * 2); >>> > ^ >>> > C:/msys64/tmp/src/src/w32font.c:547:9: note: in a call to built-in allocation function '__builtin_alloca' >>> > >>> Where did it take these 2 numbers? > > I also see the warning (I use the same toolchain). > > 18446744065119617024 is 1<<64. > The other number is (1<<64) - (1<<33) - (1<<2). > > That's just crazy. It must be a GCC bug. "https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79929".