From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS31976 209.132.180.0/23 X-Spam-Status: No, score=-2.8 required=3.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_HI,RCVD_IN_SORBS_SPAM, RP_MATCHES_RCVD shortcircuit=no autolearn=no autolearn_force=no version=3.4.0 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by dcvr.yhbt.net (Postfix) with ESMTP id 081E020A21 for ; Wed, 13 Sep 2017 11:59:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751121AbdIML7T (ORCPT ); Wed, 13 Sep 2017 07:59:19 -0400 Received: from mail-io0-f174.google.com ([209.85.223.174]:47148 "EHLO mail-io0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750949AbdIML7S (ORCPT ); Wed, 13 Sep 2017 07:59:18 -0400 Received: by mail-io0-f174.google.com with SMTP id j141so1333814ioj.4 for ; Wed, 13 Sep 2017 04:59:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to:cc; bh=EvQqlVGLPo3TY8f4/8lXL1Y7ZgNn2Oy+I7vTHwrUzw0=; b=JCGiWg5t5nyMhoJsw+S9Sz52aQtp2C3lwiK7PEGih5WHlhReh3lBYowz7VdSp8HzG8 s19nTL2mTs36oofvahbormHLT8AwZG/81PNzBMVzkQ3WHgSWwTJO/46TjtvfgF22Tu3W H4PeYZaRLuTP8xBxmYHwy9qX5Fnc5oOfY1XxwZILo7c2zQPThGI+W+mh91XHDIlg4S9K 7jX1jT8DW9CCSTEtkj2aDbeWbbpa0YSI7jVMrubG101e428uFCqAF2G2XRISkZtSQYsx fQDHLcPTxphXLrJ6Fi2NpHCQ04Gu/mpKS4BgkeEaM8iDuTLah60SsBt5dnyuN562QTSO ZmkA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc; bh=EvQqlVGLPo3TY8f4/8lXL1Y7ZgNn2Oy+I7vTHwrUzw0=; b=ec+V7p4vCrtAmpO+tz8Ch04Afc8tSS50VvLYyvamlkL6/dk6N1rE7q/+VacvTvRtPK g378I/1l3/poYgkg27eku667+63N4pkIX0qg+pazecDjGZ/oIdj4i/zYjJPatPT+L2XL wpcJ9wbfo2Q3Nza3RF27GiKnbB2tK3mpdqLWzEk+4UiwkIuz45MXhJD4WzQ4CNFoML9Q +fGOYVTUTVwPLgqkxaMKtS6JGjfFnWgB3nvAZQj/U4bJdcL6Qlw4dErKoijyJNH3zXEj W5RxIdOt9U+lQy576q1xwjZon8eXMBL+Z3YUnItGGJZdqFTAfCp7O73cyNTQ0xPBYkbV k46Q== X-Gm-Message-State: AHPjjUjFscoHeMgRctAzJa8jPgQ736wsY+E8tQy6HF4tYfvaHZMS6tqu KIXFIALTKsI6Pr83clNHrF24YmH6A5TYDQxxyF81HDte X-Google-Smtp-Source: AOwi7QDZ4ttG/O4jmzph6jf+UxkoYmHXO8oz/yrpbRV6sOwvdWRBHxlKc7WCmGxnjLlJGdygeqtJZLd2pvbcDf3iH7E= X-Received: by 10.107.48.140 with SMTP id w134mr11307845iow.301.1505303957952; Wed, 13 Sep 2017 04:59:17 -0700 (PDT) MIME-Version: 1.0 Received: by 10.107.164.4 with HTTP; Wed, 13 Sep 2017 04:59:17 -0700 (PDT) From: demerphq Date: Wed, 13 Sep 2017 13:59:17 +0200 Message-ID: Subject: Bug: git branch --unset-upstream command can nuke config when disk is full. To: Git Cc: =?UTF-8?B?w4Z2YXIgQXJuZmrDtnLDsCBCamFybWFzb24=?= Content-Type: text/plain; charset="UTF-8" Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org After being away for a while I saw the following message in one of my git repos: $ git status On branch yves/xxx Your branch is based on 'origin/yves/xxx', but the upstream is gone. (use "git branch --unset-upstream" to fixup) nothing to commit, working tree clean $ git branch --unset-upstream fatal: could not unset 'branch.yves/simple_projection.merge' At this point my .git/config file was empty, and all of my config was lost. I assume that things that rewrite .git/config do not check for a successful write before deleting the old version of the file. This was git version 2.14.1 Yves -- perl -Mre=debug -e "/just|another|perl|hacker/"