From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Andy Wingo Newsgroups: gmane.lisp.guile.bugs Subject: bug#24884: Segfault on (mkstemp! "XX" 0) Date: Wed, 01 Mar 2017 14:52:37 +0100 Message-ID: <87efyhgl3u.fsf@pobox.com> References: <20161105181658.GA2536@protected.rcdrun.com> <87a8ax8eol.fsf@pobox.com> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1488376400 7588 195.159.176.226 (1 Mar 2017 13:53:20 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Wed, 1 Mar 2017 13:53:20 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux) Cc: 24884-done@debbugs.gnu.org To: Jean Louis Original-X-From: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Wed Mar 01 14:53:16 2017 Return-path: Envelope-to: guile-bugs@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 1cj4gp-0001E4-T3 for guile-bugs@m.gmane.org; Wed, 01 Mar 2017 14:53:12 +0100 Original-Received: from localhost ([::1]:46661 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cj4gv-00026w-Uh for guile-bugs@m.gmane.org; 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c=nofws; d=pobox.com; h=from:to:cc :subject:references:date:in-reply-to:message-id:mime-version :content-type; q=dns; s=sasl; b=yNKVSQrLZ1YLwO0e7cmGJeN2Kdqewc0+ r3PmIkvw92pe6aAqVhLnSuChKYdn5DK3fe/ZtkvMYIQeNm4/xBmDzU6Yh2pfw48C eLNBkus/8nJEztlny9oYGR3xUWCU83NhjEtZMouZo1He3w4jo2DLyMpCtzbk7VV5 zCTRiQexDZI= Original-Received: from pb-sasl2.nyi.icgroup.com (unknown [127.0.0.1]) by pb-sasl2.pobox.com (Postfix) with ESMTP id 4437F658CE; Wed, 1 Mar 2017 08:52:46 -0500 (EST) Original-Received: from clucks (unknown [109.190.228.233]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by pb-sasl2.pobox.com (Postfix) with ESMTPSA id 561FF658CD; Wed, 1 Mar 2017 08:52:45 -0500 (EST) In-Reply-To: <87a8ax8eol.fsf@pobox.com> (Andy Wingo's message of "Wed, 11 Jan 2017 22:33:30 +0100") X-Pobox-Relay-ID: 591FC45A-FE86-11E6-9248-85AB91A0D1B0-02397024!pb-sasl2.pobox.com X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 X-BeenThere: bug-guile@gnu.org List-Id: "Bug reports for GUILE, GNU's Ubiquitous Extension Language" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Original-Sender: "bug-guile" Xref: news.gmane.org gmane.lisp.guile.bugs:8619 Archived-At: On Wed 11 Jan 2017 22:33, Andy Wingo writes: > On Sat 05 Nov 2016 19:16, Jean Louis writes: > >> I was just testing a function, and before I figured out what is >> happening, it is segfaulting on: >> (mkstemp! "XX" 0) >> >> I don't say, I am using it right. It should not segfault. > > I agree. This is a pending topic in Guile. (The reason, of course: > mutating literal constants is not valid Scheme. Guile allocates > some constant literals in read-only memory. Mutating that memory, or > attempting to do so, segfaults, as you have seen. We should raise an > error instead.) Sigh, spoke too soon. This one turned out to be a rather more ordinary bug. Fixed in git on both branches. Thanks for the report! Andy