Received: (at 76546) by debbugs.gnu.org; 26 Apr 2025 13:09:29 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Apr 26 09:09:29 2025 Received: from localhost ([127.0.0.1]:59362 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1u8fHc-0004vz-UW for submit <at> debbugs.gnu.org; Sat, 26 Apr 2025 09:09:29 -0400 Received: from mailrelay2-1.pub.mailoutpod3-cph3.one.com ([2a02:2350:5:421::1]:33903) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <christian@HIDDEN>) id 1u8fHY-0004vQ-Gd for 76546 <at> debbugs.gnu.org; Sat, 26 Apr 2025 09:09:26 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1745672958; x=1746277758; d=cvj.se; s=rsa2; h=to:in-reply-to:cc:references:message-id:date:subject:mime-version:from: content-transfer-encoding:content-type:from; bh=SXbTsELxgYgoYg1pJChzjqXRMxu2hw3NlKl9kOGkE4Y=; b=QFa69Bp/VY+E4gOnoICFgGBIYNrc/T5nmSMvU7HZn6KEgRfuyFb4l8Qii6II2nVCDPVddLqRaj6f0 b0GrtEhqMTCRgwOHoUjFtM3qzacHuPw9Hrtp7gABJW45RxTD9UupQasfU5oFSWG7yw3gq6Ikld+Zhm PSMwnJSMDitOhqupdc1ieS6B8gl4lhTruy52r3/oTKzdSgRAJ1kvqRf6cZuBL9DZ+E49HNhu/DBJO8 WAskreoxrObmClEQm5ClfzI1KRTBzLm6KZh6AeCW2z39dE5C4lOHjP6aUoonITlasaeKPzLAnrq7pd CKofIwA4o5VYtVITtYENtdow6oBnibQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; t=1745672958; x=1746277758; d=cvj.se; s=ed2; h=to:in-reply-to:cc:references:message-id:date:subject:mime-version:from: content-transfer-encoding:content-type:from; bh=SXbTsELxgYgoYg1pJChzjqXRMxu2hw3NlKl9kOGkE4Y=; b=mEV0W4b/xIKywe3PfBdGcQKOO4mn+qMYFb5ZBAdM7pMYMR7ywwuR45Vex9JSEgWHR2Zv10CKis5Mj IZrYTTfAQ== X-HalOne-ID: a7feec0a-229f-11f0-abd0-b37c246f863f Received: from smtpclient.apple (c-84-217-176-184.bbcust.telenor.se [84.217.176.184]) by mailrelay2.pub.mailoutpod3-cph3.one.com (Halon) with ESMTPSA id a7feec0a-229f-11f0-abd0-b37c246f863f; Sat, 26 Apr 2025 13:09:18 +0000 (UTC) Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable From: Christian Johansson <christian@HIDDEN> Mime-Version: 1.0 (1.0) Subject: Re: bug#76546: 30.1; Native compilation is corrupting lambdas/closures stored in variables after some time Date: Sat, 26 Apr 2025 15:09:07 +0200 Message-Id: <E01C2229-2B97-430B-9CE3-81C949A1D917@HIDDEN> References: <865xiruowq.fsf@HIDDEN> In-Reply-To: <865xiruowq.fsf@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> X-Mailer: iPhone Mail (22D82) X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 76546 Cc: 76546 <at> debbugs.gnu.org, acorallo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Yes maybe, it was apparent from the error message that the function had unex= pected data and trying to print it crashed Emacs.. I will check for an old l= og But this error has been present for many years so it is not a new thing, I s= olved it by not byte compilling some files > Eli Zaretskii <eliz@HIDDEN> kirjoitti 2025-04-26 kello 13.45: >=20 > =EF=BB=BF >>=20 >> Cc: 76546 <at> debbugs.gnu.org, acorallo@HIDDEN >> Date: Tue, 15 Apr 2025 11:38:34 +0300 >> From: Eli Zaretskii <eliz@HIDDEN> >>=20 >>> From: Christian Johansson <christian@HIDDEN> >>> Date: Tue, 15 Apr 2025 09:58:07 +0200 >>> Cc: Eli Zaretskii <eliz@HIDDEN>, 76546 <at> debbugs.gnu.org >>>=20 >>> I have one issue that is reproducible but only after a couple of days of= Emacs running and exahausting the memory, in that case the lambda stored in= variable becomes binary and printing it crashes Emacs >>=20 >> If the value cannot be printed, how do you know that it is binary? >>=20 >> Could you perhaps run Emacs under GDB, so that when this happens, you >> could show the value and perhaps invoke some other commands we would >> like you to try and show the results? >=20 > Ping! Any further information or progress with this?
bug-gnu-emacs@HIDDEN:bug#76546; Package emacs.
Full text available.Received: (at 76546) by debbugs.gnu.org; 26 Apr 2025 11:45:53 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Apr 26 07:45:53 2025 Received: from localhost ([127.0.0.1]:58894 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1u8dyi-0005RZ-Vm for submit <at> debbugs.gnu.org; Sat, 26 Apr 2025 07:45:53 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52882) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1u8dyh-0005RH-Em for 76546 <at> debbugs.gnu.org; Sat, 26 Apr 2025 07:45:51 -0400 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 <eliz@HIDDEN>) id 1u8dya-0001jD-23; Sat, 26 Apr 2025 07:45:44 -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=W9634ork/FaUdA2SVpPbyfAkHXmKGDZS4YoVkCCICA0=; b=QjTd6TDTO3rd XnMu8kkw1kNj/QKpMweQJUXnwO5WE6R9I6nCgKE5nnIO/ncZIR+QMIf48y3GU3ZSm2ogNemSW6NtF tcC+pviEei2+8UQUSr5RuDLqE4oMzr0uabIM7UQa8aROYeD+AFFCzJHZjLVE8oZEMhXAi9ytAnsaR 9xZ5uxLSqKyo8P+zj2tpTfOoHQUFMyQj6vQdycCaLLWoYN0d5iXcI8LADuHS/ulalTMalX4gr94ZL 8C/RhfBcnOTsCxtjp1Nn5TOaeI/eGgYGup9ec46bHtc3tpv21dtuT/ez1qZZBtAngf8vzqgdphKYk T2/gs+BRO7JBlHeU6B2ZnQ==; Date: Sat, 26 Apr 2025 14:45:41 +0300 Message-Id: <865xiruowq.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: christian@HIDDEN In-Reply-To: <86tt6phl9x.fsf@HIDDEN> (message from Eli Zaretskii on Tue, 15 Apr 2025 11:38:34 +0300) Subject: Re: bug#76546: 30.1; Native compilation is corrupting lambdas/closures stored in variables after some time References: <yp1mscjt66m.fsf@HIDDEN> <36576F50-535B-48D3-BEDD-D9E153C31536@HIDDEN> <86tt6phl9x.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 76546 Cc: 76546 <at> debbugs.gnu.org, acorallo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > Cc: 76546 <at> debbugs.gnu.org, acorallo@HIDDEN > Date: Tue, 15 Apr 2025 11:38:34 +0300 > From: Eli Zaretskii <eliz@HIDDEN> > > > From: Christian Johansson <christian@HIDDEN> > > Date: Tue, 15 Apr 2025 09:58:07 +0200 > > Cc: Eli Zaretskii <eliz@HIDDEN>, 76546 <at> debbugs.gnu.org > > > > I have one issue that is reproducible but only after a couple of days of Emacs running and exahausting the memory, in that case the lambda stored in variable becomes binary and printing it crashes Emacs > > If the value cannot be printed, how do you know that it is binary? > > Could you perhaps run Emacs under GDB, so that when this happens, you > could show the value and perhaps invoke some other commands we would > like you to try and show the results? Ping! Any further information or progress with this?
bug-gnu-emacs@HIDDEN:bug#76546; Package emacs.
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bug-gnu-emacs@HIDDEN:bug#76546; Package emacs.
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From: Christian Johansson <christian@HIDDEN>
Mime-Version: 1.0 (1.0)
Subject: Re: bug#76546: 30.1;
Native compilation is corrupting lambdas/closures stored in variables
after some time
Date: Tue, 15 Apr 2025 09:58:07 +0200
Message-Id: <36576F50-535B-48D3-BEDD-D9E153C31536@HIDDEN>
References: <yp1mscjt66m.fsf@HIDDEN>
In-Reply-To: <yp1mscjt66m.fsf@HIDDEN>
To: Andrea Corallo <acorallo@HIDDEN>
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Hi
The initial issue disappeared by itself without any updates to software, it s=
tarted to happen after Emacs upgrade on two different machines but resolved i=
tself. Must be something related to corrupt storage of byte compiled or nati=
ve compiled code
I have not encountered the issue since but other strange issues like keymap r=
ebinding after some time in a Emacs session
I have one issue that is reproducible but only after a couple of days of Ema=
cs running and exahausting the memory, in that case the lambda stored in var=
iable becomes binary and printing it crashes Emacs
Regards
Christian
> Andrea Corallo <acorallo@HIDDEN> kirjoitti 2025-04-14 kello 12.15:
>=20
> =EF=BB=BFEli Zaretskii <eliz@HIDDEN> writes:
>=20
>>> Date: Tue, 25 Feb 2025 11:27:58 +0100
>>> From: Christian Johansson <christian@HIDDEN>
>>>=20
>>> There is something fishy going on, but it is a very slippery bug, I have=
>>> trouble reproducing it but it started to happen when native compilation
>>> was introduced and it has significantly gotten worse with Emacs 30, I
>>> never happened before native-compilation was introduced.
>>>=20
>>> Maybe you can give me some tips in building a reproducible test case? I
>>> will try to explain what happens. So prior to Emacs 30 there was only
>>> one bug I stumbled upon:
>>>=20
>>> 1. When a lambda is stored in a variable in a lexical scoped file it
>>> stores a closure. After some time when native compilation has done its
>>> magic on the variable you will get an error when you try to output it
>>> like this:
>>> (format "%S" my-native-compiled-variable) and Emacs crashes.
>>>=20
>>> This happened every time my parser-generator library ran for a long time=
>>> and then tried to output a parser file. The only solution to this was to=
>>> not byte-compile the file that contained the lambdas that was later
>>> supposed to be printed to a file, this solution worked but it was a
>>> workaround due to this bug.
>>>=20
>>>=20
>>> 2. After Emacs 30 it seems to corrupt strings with escape sequences
>>> inside lambdas inside variables, like this:
>>>=20
>>> (setq my-lambda (lambda() (looking-at "<\\?=3D")))
>>>=20
>>> After native-compilation has performed its magic on the variable the
>>> function body will become corrupted and it will become a invalid
>>> function body. This happens now to my major my phps-mode, I have
>>> reproduced the error on two machines with Emacs 30 and it has never
>>> occurred before Emacs 30 and there has been no recent changes to the
>>> plugin. If I just eval the function files anew the problem disappears so=
>>> it only happens in compiled files. It however does not happen in
>>> byte-compiled files, only in native compiled files.
>>=20
>> Andrea, any comments or suggestions?
>=20
> I can't reproduce this on master. I've:
>=20
> test.el:
> =3D=3D=3D=3D=3D=3D
> ;; -*- lexical-binding: t -*- =
=20
> (setq my-lambda (lambda() (looking-at "<\\?=3D")))
> =3D=3D=3D=3D=3D=3D
>=20
> If I run emacs:
> $ emacs --batch -eval '(progn (load (native-compile "/home/andcor03/test/t=
est.el")) (funcall my-lambda))'
>=20
> Seems to work for me. Not sure if the reproducer should be something
> different tho.
>=20
> Andrea
bug-gnu-emacs@HIDDEN:bug#76546; Package emacs.
Full text available.Received: (at 76546) by debbugs.gnu.org; 14 Apr 2025 09:59:24 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Apr 14 05:59:23 2025 Received: from localhost ([127.0.0.1]:45860 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1u4Gb5-0007We-FP for submit <at> debbugs.gnu.org; Mon, 14 Apr 2025 05:59:23 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35860) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <acorallo@HIDDEN>) id 1u4Gb3-0007WQ-TK for 76546 <at> debbugs.gnu.org; Mon, 14 Apr 2025 05:59:22 -0400 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 <acorallo@HIDDEN>) id 1u4Gaw-0003ej-QL; Mon, 14 Apr 2025 05:59:14 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-Version:Date:References:In-Reply-To:Subject:To: From; bh=P1KoU24bZqObAQIFecJnxMYTra0Z8ajHOmCMU0y8PKc=; b=r350BEh0SStdvEavW8yj mwdjSDUReeIuIasIvt5yh0R0GQ+ZIvGBWl4kz2H31eATI4JPEADMbOJ/oH0lxDvrpMdCPeVs0TaQx 8Rkh6kWTeNk9VJoYIuSZ8p0l8Mo/MOCu6mTxrsW8QZiwNwd39zGh84ZBGGSkePBuPkqvccwDTOUDI a6RZqRoYaxk8UZhw4E8/Ih+a0IglcGfSQ1SeUkBhRmZMOw0qLM0m0Y/vHqslsvZlNL9tjPsWumvgf Tt1YclCYbe7cr3gTr9gMc/8xet2sH/GCgkOIGyWxACsH9lsRxLnqHo7MY98F30evqHGa7I+uXihrb TRxrporK1KwexA==; Received: from acorallo by fencepost.gnu.org with local (Exim 4.90_1) (envelope-from <acorallo@HIDDEN>) id 1u4Gav-0007Gw-BG; Mon, 14 Apr 2025 05:59:13 -0400 From: Andrea Corallo <acorallo@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#76546: 30.1; Native compilation is corrupting lambdas/closures stored in variables after some time In-Reply-To: <86eczkx4el.fsf@HIDDEN> (Eli Zaretskii's message of "Wed, 26 Feb 2025 14:43:30 +0200") References: <07eb92db-3c36-4db4-94e3-633b05f31f1b@HIDDEN> <86eczkx4el.fsf@HIDDEN> Date: Mon, 14 Apr 2025 05:59:13 -0400 Message-ID: <yp1mscjt66m.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 76546 Cc: Christian Johansson <christian@HIDDEN>, 76546 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) Eli Zaretskii <eliz@HIDDEN> writes: >> Date: Tue, 25 Feb 2025 11:27:58 +0100 >> From: Christian Johansson <christian@HIDDEN> >> >> There is something fishy going on, but it is a very slippery bug, I have >> trouble reproducing it but it started to happen when native compilation >> was introduced and it has significantly gotten worse with Emacs 30, I >> never happened before native-compilation was introduced. >> >> Maybe you can give me some tips in building a reproducible test case? I >> will try to explain what happens. So prior to Emacs 30 there was only >> one bug I stumbled upon: >> >> 1. When a lambda is stored in a variable in a lexical scoped file it >> stores a closure. After some time when native compilation has done its >> magic on the variable you will get an error when you try to output it >> like this: >> (format "%S" my-native-compiled-variable) and Emacs crashes. >> >> This happened every time my parser-generator library ran for a long time >> and then tried to output a parser file. The only solution to this was to >> not byte-compile the file that contained the lambdas that was later >> supposed to be printed to a file, this solution worked but it was a >> workaround due to this bug. >> >> >> 2. After Emacs 30 it seems to corrupt strings with escape sequences >> inside lambdas inside variables, like this: >> >> (setq my-lambda (lambda() (looking-at "<\\?="))) >> >> After native-compilation has performed its magic on the variable the >> function body will become corrupted and it will become a invalid >> function body. This happens now to my major my phps-mode, I have >> reproduced the error on two machines with Emacs 30 and it has never >> occurred before Emacs 30 and there has been no recent changes to the >> plugin. If I just eval the function files anew the problem disappears so >> it only happens in compiled files. It however does not happen in >> byte-compiled files, only in native compiled files. > > Andrea, any comments or suggestions? I can't reproduce this on master. I've: test.el: ====== ;; -*- lexical-binding: t -*- (setq my-lambda (lambda() (looking-at "<\\?="))) ====== If I run emacs: $ emacs --batch -eval '(progn (load (native-compile "/home/andcor03/test/test.el")) (funcall my-lambda))' Seems to work for me. Not sure if the reproducer should be something different tho. Andrea
bug-gnu-emacs@HIDDEN:bug#76546; Package emacs.
Full text available.Received: (at 76546) by debbugs.gnu.org; 27 Feb 2025 08:03:50 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Feb 27 03:03:50 2025 Received: from localhost ([127.0.0.1]:57885 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tnYs1-0006kv-Jp for submit <at> debbugs.gnu.org; Thu, 27 Feb 2025 03:03:49 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:40452) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1tnYry-0006kf-No for 76546 <at> debbugs.gnu.org; Thu, 27 Feb 2025 03:03:47 -0500 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 <eliz@HIDDEN>) id 1tnYrr-00012F-Kx; Thu, 27 Feb 2025 03:03:39 -0500 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=uiwPtzNF7+R951qnkmBlxX6fEbOsuNJVN7PY0gxxmww=; b=WEAw8f3ttap2 pYrBgJtSRcv4RaOX3ry+lOxSP10xov+jHv0ZhjT7/lMwHy3OLVnGV8YSSzoQGpW/z9h4eyrYSotQW ZZYbqRw9q8FuQL5NCEHjyiE+RWv8FhPgomycoWy1jfXxb2yxqKvNkUPo2tFujmzQzjhDRdKR1WNjT a/tSMyjlGY1n1qJ+FcBNSwwCIUB2DEcCkPuiSeifRJUewtOBgY8cJOcwus7Q7VKfw5Cd94VexBIPr 6k42m6feJm+oJcNZp4fW9SrghmLiRkA9noAMhtw6Iey8wyGN9RtrBXsnKpczE3BUMSiReUexPTnMR zObydmUbAiTakCfZTZWkTQ==; Date: Thu, 27 Feb 2025 10:02:41 +0200 Message-Id: <864j0fvmqm.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Christian Johansson <christian@HIDDEN> In-Reply-To: <DFC9C293-7520-44AE-B616-EF6D2B907579@HIDDEN> (message from Christian Johansson on Wed, 26 Feb 2025 21:55:28 +0100) Subject: Re: bug#76546: 30.1; Native compilation is corrupting lambdas/closures stored in variables after some time References: <86eczkx4el.fsf@HIDDEN> <DFC9C293-7520-44AE-B616-EF6D2B907579@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 76546 Cc: 76546 <at> debbugs.gnu.org, acorallo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Christian Johansson <christian@HIDDEN> > Date: Wed, 26 Feb 2025 21:55:28 +0100 > Cc: Andrea Corallo <acorallo@HIDDEN>, 76546 <at> debbugs.gnu.org > > Today the error disappeared on both machines without any changes in code, it makes no sense really but if I could trigger native compilation I could do some testing back and forth. It can be a issue with the garbage collection mechanism also, the things could be dependent on each other as well. Maybe only native compiled + byte compiled + garbage collected variables get corrupted sometimes? If you need a way to trigger native compilation, then removing the corresponding .eln file(s) should do it.
bug-gnu-emacs@HIDDEN:bug#76546; Package emacs.
Full text available.Received: (at 76546) by debbugs.gnu.org; 26 Feb 2025 20:55:50 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Wed Feb 26 15:55:50 2025 Received: from localhost ([127.0.0.1]:55696 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tnORa-0008KP-2R for submit <at> debbugs.gnu.org; Wed, 26 Feb 2025 15:55:50 -0500 Received: from mailrelay6-1.pub.mailoutpod3-cph3.one.com ([2a02:2350:5:425::1]:39823) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <christian@HIDDEN>) id 1tnORV-0008K8-B2 for 76546 <at> debbugs.gnu.org; Wed, 26 Feb 2025 15:55:47 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1740603339; x=1741208139; d=cvj.se; s=rsa2; h=to:in-reply-to:cc:references:message-id:date:subject:mime-version:from: content-transfer-encoding:content-type:from; bh=HgiwMM1MO8lHaKdVnuS/OMJFxgxMw+Ac+N+72cmvvgU=; b=Wa4aCI34yh3k9EX0fzoDDinwxA2up/U718CKj+KOAGivPdZqGoGCiBHsKZyzppE1LztOL1lKhg7Rf vWczjogrWBOEuCVpR2SA1j/MC0MqtNlz3rIMGjdTsJqxXUA5FmiEHaq39uX0jymeFEJwzd+NLAcCr+ tTn2Ye9XuXHs/473LC3Lu0NPnFBdbkf8KSzGwXe+mUlw77pntkgp53GQ37HOX7gM7JBLx7sPD56BPA 1Wo69Eb2uaenCSei7qwswJqlCFfuG2+fwIRqGTeUR7FfV3M8MGA3Ud0BW96N7aIfZtqFopz7PdHB+N 57sk8u+AjTGqanOn91Jot0ao3Opa0kA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; t=1740603339; x=1741208139; d=cvj.se; s=ed2; h=to:in-reply-to:cc:references:message-id:date:subject:mime-version:from: content-transfer-encoding:content-type:from; bh=HgiwMM1MO8lHaKdVnuS/OMJFxgxMw+Ac+N+72cmvvgU=; b=5wTzICiwNsDuyTZQzlrFOAPxDJ0YnV1lasDSknVAK7sxUu44XYKg9QV+Mdpo3YTe1ler4xltEmaFv RDNegeeDQ== X-HalOne-ID: 0854895d-f484-11ef-b680-417246ffdc90 Received: from smtpclient.apple (c-84-217-183-19.bbcust.telenor.se [84.217.183.19]) by mailrelay6.pub.mailoutpod3-cph3.one.com (Halon) with ESMTPSA id 0854895d-f484-11ef-b680-417246ffdc90; Wed, 26 Feb 2025 20:55:38 +0000 (UTC) Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable From: Christian Johansson <christian@HIDDEN> Mime-Version: 1.0 (1.0) Subject: Re: bug#76546: 30.1; Native compilation is corrupting lambdas/closures stored in variables after some time Date: Wed, 26 Feb 2025 21:55:28 +0100 Message-Id: <DFC9C293-7520-44AE-B616-EF6D2B907579@HIDDEN> References: <86eczkx4el.fsf@HIDDEN> In-Reply-To: <86eczkx4el.fsf@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> X-Mailer: iPhone Mail (22D72) X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 76546 Cc: 76546 <at> debbugs.gnu.org, Andrea Corallo <acorallo@HIDDEN> X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Today the error disappeared on both machines without any changes in code, it= makes no sense really but if I could trigger native compilation I could do s= ome testing back and forth. It can be a issue with the garbage collection me= chanism also, the things could be dependent on each other as well. Maybe onl= y native compiled + byte compiled + garbage collected variables get corrupte= d sometimes? Non reproducible bugs that only happen after a significant period of time.. v= ariable data gets corrupted, that is at least true Kind Regards Christian > On 26 Feb 2025, at 14:03, Eli Zaretskii <eliz@HIDDEN> wrote: >=20 > =EF=BB=BF >>=20 >> Date: Tue, 25 Feb 2025 11:27:58 +0100 >> From: Christian Johansson <christian@HIDDEN> >>=20 >> There is something fishy going on, but it is a very slippery bug, I have >> trouble reproducing it but it started to happen when native compilation >> was introduced and it has significantly gotten worse with Emacs 30, I >> never happened before native-compilation was introduced. >>=20 >> Maybe you can give me some tips in building a reproducible test case? I >> will try to explain what happens. So prior to Emacs 30 there was only >> one bug I stumbled upon: >>=20 >> 1. When a lambda is stored in a variable in a lexical scoped file it >> stores a closure. After some time when native compilation has done its >> magic on the variable you will get an error when you try to output it >> like this: >> (format "%S" my-native-compiled-variable) and Emacs crashes. >>=20 >> This happened every time my parser-generator library ran for a long time >> and then tried to output a parser file. The only solution to this was to >> not byte-compile the file that contained the lambdas that was later >> supposed to be printed to a file, this solution worked but it was a >> workaround due to this bug. >>=20 >>=20 >> 2. After Emacs 30 it seems to corrupt strings with escape sequences >> inside lambdas inside variables, like this: >>=20 >> (setq my-lambda (lambda() (looking-at "<\\?=3D"))) >>=20 >> After native-compilation has performed its magic on the variable the >> function body will become corrupted and it will become a invalid >> function body. This happens now to my major my phps-mode, I have >> reproduced the error on two machines with Emacs 30 and it has never >> occurred before Emacs 30 and there has been no recent changes to the >> plugin. If I just eval the function files anew the problem disappears so >> it only happens in compiled files. It however does not happen in >> byte-compiled files, only in native compiled files. >=20 > Andrea, any comments or suggestions?
bug-gnu-emacs@HIDDEN:bug#76546; Package emacs.
Full text available.Received: (at 76546) by debbugs.gnu.org; 26 Feb 2025 12:43:48 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Wed Feb 26 07:43:48 2025 Received: from localhost ([127.0.0.1]:51388 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tnGlP-0007Kw-Dp for submit <at> debbugs.gnu.org; Wed, 26 Feb 2025 07:43:48 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:35840) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1tnGlI-0007Kb-SB for 76546 <at> debbugs.gnu.org; Wed, 26 Feb 2025 07:43:44 -0500 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 <eliz@HIDDEN>) id 1tnGlB-0003op-Hm; Wed, 26 Feb 2025 07:43:33 -0500 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=Vph1IJ3BJ1rm/12D3wiUNqIWUZelNOdICzMp5lWBx68=; b=AIjfWgOw5nj+ xCTk8FB3tVUfbASoUg0FzCbxoRRmtO1/4/vjafeZLRQLukIINLzvLYTL4DwhzD+AKy/KoXuoqhQ+Q ZT/kXkKZ2Cr508/tE6/8nslRsBfAXYax/CpHjZfAKe6VtNjxW/Ush2jkpxH3xG0BfdbGCXBXqeods qabsYZTSQJ8qVHCfNMqDy+OBCUu77WNV3q5lgeYGrk7dTegZHmLdG6TjAA7Se97wvnrcI4qlx9LXL ccxBW4yHAci+LOyX8/bCJ7kXbjPUAF3WwGgz0HIVGuBYH/6DZsKg9C7tlEU7J5Wv2N75rmsZHJ8n8 wuaR/1A1dSTMvwE/NQDX9A==; Date: Wed, 26 Feb 2025 14:43:30 +0200 Message-Id: <86eczkx4el.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Christian Johansson <christian@HIDDEN>, Andrea Corallo <acorallo@HIDDEN> In-Reply-To: <07eb92db-3c36-4db4-94e3-633b05f31f1b@HIDDEN> (message from Christian Johansson on Tue, 25 Feb 2025 11:27:58 +0100) Subject: Re: bug#76546: 30.1; Native compilation is corrupting lambdas/closures stored in variables after some time References: <07eb92db-3c36-4db4-94e3-633b05f31f1b@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 76546 Cc: 76546 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > Date: Tue, 25 Feb 2025 11:27:58 +0100 > From: Christian Johansson <christian@HIDDEN> > > There is something fishy going on, but it is a very slippery bug, I have > trouble reproducing it but it started to happen when native compilation > was introduced and it has significantly gotten worse with Emacs 30, I > never happened before native-compilation was introduced. > > Maybe you can give me some tips in building a reproducible test case? I > will try to explain what happens. So prior to Emacs 30 there was only > one bug I stumbled upon: > > 1. When a lambda is stored in a variable in a lexical scoped file it > stores a closure. After some time when native compilation has done its > magic on the variable you will get an error when you try to output it > like this: > (format "%S" my-native-compiled-variable) and Emacs crashes. > > This happened every time my parser-generator library ran for a long time > and then tried to output a parser file. The only solution to this was to > not byte-compile the file that contained the lambdas that was later > supposed to be printed to a file, this solution worked but it was a > workaround due to this bug. > > > 2. After Emacs 30 it seems to corrupt strings with escape sequences > inside lambdas inside variables, like this: > > (setq my-lambda (lambda() (looking-at "<\\?="))) > > After native-compilation has performed its magic on the variable the > function body will become corrupted and it will become a invalid > function body. This happens now to my major my phps-mode, I have > reproduced the error on two machines with Emacs 30 and it has never > occurred before Emacs 30 and there has been no recent changes to the > plugin. If I just eval the function files anew the problem disappears so > it only happens in compiled files. It however does not happen in > byte-compiled files, only in native compiled files. Andrea, any comments or suggestions?
bug-gnu-emacs@HIDDEN:bug#76546; Package emacs.
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There is something fishy going on, but it is a very slippery bug, I have trouble reproducing it but it started to happen when native compilation was introduced and it has significantly gotten worse with Emacs 30, I never happened before native-compilation was introduced. Maybe you can give me some tips in building a reproducible test case? I will try to explain what happens. So prior to Emacs 30 there was only one bug I stumbled upon: 1. When a lambda is stored in a variable in a lexical scoped file it stores a closure. After some time when native compilation has done its magic on the variable you will get an error when you try to output it like this: (format "%S" my-native-compiled-variable) and Emacs crashes. This happened every time my parser-generator library ran for a long time and then tried to output a parser file. The only solution to this was to not byte-compile the file that contained the lambdas that was later supposed to be printed to a file, this solution worked but it was a workaround due to this bug. 2. After Emacs 30 it seems to corrupt strings with escape sequences inside lambdas inside variables, like this: (setq my-lambda (lambda() (looking-at "<\\?="))) After native-compilation has performed its magic on the variable the function body will become corrupted and it will become a invalid function body. This happens now to my major my phps-mode, I have reproduced the error on two machines with Emacs 30 and it has never occurred before Emacs 30 and there has been no recent changes to the plugin. If I just eval the function files anew the problem disappears so it only happens in compiled files. It however does not happen in byte-compiled files, only in native compiled files. Kind regards Christian
Christian Johansson <christian@HIDDEN>:bug-gnu-emacs@HIDDEN.
Full text available.bug-gnu-emacs@HIDDEN:bug#76546; Package emacs.
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