From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Paul Eggert Newsgroups: gmane.emacs.bugs Subject: bug#49261: Segfault during loadup Date: Mon, 12 Jul 2021 07:50:41 -0700 Organization: UCLA Computer Science Department Message-ID: <5608bf0a-7211-73a9-690f-c869a1cb3c9d@cs.ucla.edu> References: <87o8bn7bie.fsf@gnus.org> <87zgv6vuon.fsf@gmx.de> <837di9lwbm.fsf@gnu.org> <87a6n5vuu4.fsf@gnus.org> <8735sqnmei.fsf@gnus.org> <87zguyf4ht.fsf@gmx.de> <87pmvum54p.fsf@gnus.org> <87v95mf2lj.fsf@gmx.de> <87pmvt3ob1.fsf@gnus.org> <83r1g9evoy.fsf@gnu.org> <83pmvtevgg.fsf@gnu.org> <87czrt3mj4.fsf@gnus.org> <878s2h3m1d.fsf@gnus.org> <874kd53lnl.fsf@gnus.org> <87zgux26ab.fsf@gnus.org> <87pmvt25uq.fsf@gnus.org> <87lf6h2294.fsf@gnus.org> <87h7h51x9y.fsf_-_@gnus.org> <83bl79b17n.fsf@gnu.org> <835yxgc1pm.fsf@gnu.org> <83wnpvag6z.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; 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Mon, 12 Jul 2021 07:50:42 -0700 (PDT) In-Reply-To: <83wnpvag6z.fsf@gnu.org> Content-Language: en-US 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" Xref: news.gmane.io gmane.emacs.bugs:209824 Archived-At: On 7/12/21 5:07 AM, Eli Zaretskii wrote: >> Yes that GCC warning was bogus, and your pacification of GCC is valid > > Hmm... is it really a bogus warning? VALMASK is a 64-bit value, and > uintptr_t is 32-bit wide. It's bogus in the sense that 'uintptr_t mask = VALMASK;' has well-defined behavior in C; there is no undefined behavior there, since VALMASK is an integer and uintptr_t is unsigned. And truncation is what is wanted here, so the warning is bogus.