From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#47067: 28.0.50; [feature/native-comp] Crash while scrolling through dispnew.c Date: Sun, 14 Mar 2021 14:17:59 +0200 Message-ID: <831rcigc94.fsf@gnu.org> References: <83sg52lykn.fsf@gnu.org> <83mtv8lrmf.fsf@gnu.org> <83czw4lelg.fsf@gnu.org> <83mtv8jgn2.fsf@gnu.org> <834khfjv7q.fsf@gnu.org> <83tupfia1m.fsf@gnu.org> <83mtv7hy5c.fsf@gnu.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="29634"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 47067@debbugs.gnu.org, akrl@sdf.org To: Pip Cet Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Mar 14 13:18:56 2021 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lLPhv-0007bK-T5 for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 14 Mar 2021 13:18:55 +0100 Original-Received: from localhost ([::1]:35098 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lLPhu-0006oS-NF for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 14 Mar 2021 08:18:54 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:55084) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lLPh6-0006ne-21 for bug-gnu-emacs@gnu.org; Sun, 14 Mar 2021 08:18:05 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:49743) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lLPh5-0001rZ-0y for bug-gnu-emacs@gnu.org; Sun, 14 Mar 2021 08:18:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1lLPh4-000315-TX for bug-gnu-emacs@gnu.org; Sun, 14 Mar 2021 08:18:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 14 Mar 2021 12:18:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 47067 X-GNU-PR-Package: emacs Original-Received: via spool by 47067-submit@debbugs.gnu.org id=B47067.161572427811576 (code B ref 47067); Sun, 14 Mar 2021 12:18:02 +0000 Original-Received: (at 47067) by debbugs.gnu.org; 14 Mar 2021 12:17:58 +0000 Original-Received: from localhost ([127.0.0.1]:33055 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lLPgz-00030d-Nr for submit@debbugs.gnu.org; Sun, 14 Mar 2021 08:17:57 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:37194) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lLPgy-00030R-5g for 47067@debbugs.gnu.org; Sun, 14 Mar 2021 08:17:56 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:51186) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lLPgs-0001ka-Vt; Sun, 14 Mar 2021 08:17:50 -0400 Original-Received: from 84.94.185.95.cable.012.net.il ([84.94.185.95]:1336 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1lLPgs-0006QP-7f; Sun, 14 Mar 2021 08:17:50 -0400 In-Reply-To: (message from Pip Cet on Sat, 13 Mar 2021 15:45:52 +0000) 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:202364 Archived-At: > From: Pip Cet > Date: Sat, 13 Mar 2021 15:45:52 +0000 > Cc: 47067@debbugs.gnu.org, Andrea Corallo > > > (defcustom comp-debug 0 > > "Debug level for native compilation, a number between 0 and 3. > > This is intended for debugging the compiler itself. > > 0 no debugging output. > > This is the recommended value unless you are debugging the compiler itself. > > 1 emit debug symbols and dump pseudo C code. > > 2 dump gcc passes and libgccjit log file. > > 3 dump libgccjit reproducers." > > > > The first line is somewhat deceptive, as it doesn't say portions of > > the backtrace will be anonymous; the backtrace is useful even if not > > "debugging the compiler itself". And the description of level 1 says > > it will also "dump pseudo C code", which I don't think is needed for > > most of the debugging. Maybe we need an intermediate level that just > > leaves the symbols without dumping the pseudo code? > > I think that's an excellent idea. Andrea, is it possible to have debug level 1 produce only the debug info within the generated code, and leave the pseudo-code dump for higher levels? If you don't have time to implement this yourself, can you instruct me what changes need to be made? I'd like to try recompiling everything with debug level 1 and see if that helps with the backtraces. Thanks.