From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS31976 209.132.180.0/23 X-Spam-Status: No, score=-3.8 required=3.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_NONE shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by dcvr.yhbt.net (Postfix) with ESMTP id 9F3921F461 for ; Tue, 27 Aug 2019 16:27:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730280AbfH0Q13 (ORCPT ); Tue, 27 Aug 2019 12:27:29 -0400 Received: from mail-ed1-f53.google.com ([209.85.208.53]:34425 "EHLO mail-ed1-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726871AbfH0Q13 (ORCPT ); Tue, 27 Aug 2019 12:27:29 -0400 Received: by mail-ed1-f53.google.com with SMTP id s49so32154250edb.1 for ; Tue, 27 Aug 2019 09:27:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:subject:message-id:mime-version:content-disposition :user-agent; bh=lbUVNNjkuRyzIYQfh99xKrXWa3oftEJxGHsRRuG8PMo=; b=inOyn8qTWtTD1lQcC4tZfG07p1DRc1587PQ7P1V6W7rwrFPLW8dREp+cR6PrejQdVs A1vaJztJ2pIsbndloq7iPFIZRHqkgWqkiRVONc8jbMa5kkD46/AYziXMkjpoH/IFurXc GbAGr/DrTUyk0fHq7AbDsRfNAI7JGSNmOklSsSVVoyNw3J9nCf6MDd8/iSWII7AqcdV2 nZPKkFfNBPAkolgWx/yN6qLXb7hvDzosMkvFziBkxmTsDhjlvC4xoiiZVMIsuTdlclyk FskkyMx8mQkUD3+y4grDNVo1am5EIF9XOA84ipyuSOdn9CjZye0Q3gahkiFGj7EDiYzO PlLg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:subject:message-id:mime-version :content-disposition:user-agent; bh=lbUVNNjkuRyzIYQfh99xKrXWa3oftEJxGHsRRuG8PMo=; b=ZLw3Jx0hH1dliIibCmNUOh6+2/sXz512Zgc48xwfOTuAtGihG2DNqaamODsxfFldDo gTG8Uy01AEOvdO7L8a/WqArPxC6oU2/jsCIrA1YrmivR3zSDL8TQUdu4B4OfPbuOEDMk RJ7hNxvBBKfrlodcFwwagkIPJKruD21yhhpHMSezLZzklbmg4p6HVUGeSsNwjhX6oH2Z ApYIKeklp5RJVH0/n/c0Dtsm2D8Ytn7aLnv4VODItHpnQ7PtetCt7GjfIrMhZfgeEWRe f4g4wR7zd4ARBrH9Zqxx2tXfmFXQkrZOWlETTbSyZ+FSX2lPLTpwF75kDE8cq3NnVFV7 WXjw== X-Gm-Message-State: APjAAAXWtQtFjuBLvqH0kXtSnGoCgA7nb5n3cMR+Ps7aIFvx4sPu0A/F qxxGjn8JzVfvw72AVLxV1JiOF/7ZfUE= X-Google-Smtp-Source: APXvYqw5uZe3nFPtf6qPHdSi4I8q5B251FAusfKXb5eYpWz+tLu3kG2K0QZNOs+rvVbgFDiRS7c6mw== X-Received: by 2002:a50:f315:: with SMTP id p21mr25573565edm.195.1566923247179; Tue, 27 Aug 2019 09:27:27 -0700 (PDT) Received: from instance-template-2.europe-west6-a.c.vaulted-journal-250706.internal (1.133.65.34.bc.googleusercontent.com. [34.65.133.1]) by smtp.gmail.com with ESMTPSA id b15sm2081220edb.46.2019.08.27.09.27.26 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 27 Aug 2019 09:27:26 -0700 (PDT) Date: Tue, 27 Aug 2019 16:27:25 +0000 From: Giuseppe Crino' To: git@vger.kernel.org Subject: How to build to debug with gdb? Message-ID: <20190827162725.GA29263@instance-template-2.europe-west6-a.c.vaulted-journal-250706.internal> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.9.4 (2018-02-28) Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Hello, to debug some issues I built and installed git via $ make prefix=/usr/local DEVELOPER=1 CFLAGS="-O0 -g" $ sudo make install $ git --version # git version 2.23.0.40.g4d8aada92f But it seems there's still some optimization going on that prevents gdb from working correctly. For example (gdb) b builtin/config.c:752 Breakpoint 1 at 0x43942: file builtin/config.c, line 752. (gdb) r config --global --edit Starting program: /usr/local/bin/git config --global --edit [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libth read_db.so.1". Breakpoint 1, cmd_config (argc=0, argv=, prefix=) at builtin/config.c:753 753 if (fd >= 0) { (gdb) p fd $1 = What am I missing? -Giuseppe