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: AS53758 23.128.96.0/24 X-Spam-Status: No, score=-4.2 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_LOW, SPF_HELO_PASS,SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by dcvr.yhbt.net (Postfix) with ESMTP id 7C9361F9E5 for ; Sun, 13 Jun 2021 22:59:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232225AbhFMXBB (ORCPT ); Sun, 13 Jun 2021 19:01:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51488 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232181AbhFMXBB (ORCPT ); Sun, 13 Jun 2021 19:01:01 -0400 Received: from mail-ot1-x32e.google.com (mail-ot1-x32e.google.com [IPv6:2607:f8b0:4864:20::32e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2F357C061574 for ; Sun, 13 Jun 2021 15:58:45 -0700 (PDT) Received: by mail-ot1-x32e.google.com with SMTP id w23-20020a9d5a970000b02903d0ef989477so9076737oth.9 for ; Sun, 13 Jun 2021 15:58:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=/vlpUfp9K00BVnxAIIyPR+nmhbV27ININ2rArAaXpSM=; b=M05/36iFmfx1OMfDiUQ5s9JFxWx03OwRJSzOjg3WIoKQ1oxhVfSk9Z8FQ96RKf/g7a 8F07LMF7PyXhBrXkau2lESZ66Ui8IO2zrgL7FI9Zz3L+QIRMJJVJhJK4Dn6rtFZJCrL7 hwJJHWO8HT6sFc08QCTOycYyS4gv/yf7i7fQOe8/aJ3GCdRAxPoeXCARGRA95wh+F5z2 qL8QE8f3M0wP1HRw7so3jhG7EQgsZBq4WkZvYAla25ac3n4oVPqYNN+kY6Xv2zrcxr52 w1tFg3dyLbP2Na+0CEUvZk8hzSad2H1+6l+52M749EoP8SkEWCreEHlHLRPpO/dS5c/N rJ7Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=/vlpUfp9K00BVnxAIIyPR+nmhbV27ININ2rArAaXpSM=; b=nqT2UMHL3ucMzUOx4/fwTtB3moQOxm/TsUKC1Rf4NoXO9l8bcjowEF01mWadx5xXJ4 xhLrSP125fyuD3fF3j/lFr1ivaFSG/zd3B3Zetp4qn4NB5ulBYFPM4ulMZnnZoN/b7ys c63DBHkER+Nk4LgJMX1Kp12syMV0RWF2BNgldf3XmUhIdcdcUTjhMJgSMSN5Easy/KFY p2mEdVnimBowjUEGaG1i7eoz3XUBsaOVA/zFxoxQmnu9h/OgCARr7jdlhxpAbedjH6+n N+2wb2luBHp1CVes6nWyL3fl0hfy0AKnLs0tTOqeqeRjctJ1J+Ev2gidLZlWxnR5ny0n y/cQ== X-Gm-Message-State: AOAM530+GvTI9kO5+Az3dnnlyCmQbt6cxVkfMZiknBZs3TtxF3EMlzJM RwyZssGx0UkovfoGZxgMIEDLEaU2AcbWJw== X-Google-Smtp-Source: ABdhPJzbIMrRu3IPjyi51MWNvv2ayXduXs11T536OsMeZLN9htahCYJvLRo2dLSYAyLE09sVxQ0VPQ== X-Received: by 2002:a9d:ea2:: with SMTP id 31mr11705355otj.200.1623625124382; Sun, 13 Jun 2021 15:58:44 -0700 (PDT) Received: from localhost (fixed-187-188-155-231.totalplay.net. [187.188.155.231]) by smtp.gmail.com with ESMTPSA id r1sm2964049oth.19.2021.06.13.15.58.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 13 Jun 2021 15:58:44 -0700 (PDT) From: Felipe Contreras To: git@vger.kernel.org Cc: Jeff King , Junio C Hamano , Felipe Contreras Subject: [PATCH 4/4] xdiff/xmerge: fix chg0 initialization Date: Sun, 13 Jun 2021 17:58:36 -0500 Message-Id: <20210613225836.1009569-5-felipe.contreras@gmail.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210613225836.1009569-1-felipe.contreras@gmail.com> References: <20210613225836.1009569-1-felipe.contreras@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org chg0 is needed when style is XDL_MERGE_DIFF3, xdl_refine_conflicts() currently is only called when level >= XDL_MERGE_ZEALOUS, which cannot happen since the level is capped to XDL_MERGE_EAGER. However, if at some point in the future we decide to not cap diff3, or introduce a similar uncapped mode, an uninitialized chg0 would cause a crash. Let's initialize it to be safe. Cc: Jeff King Signed-off-by: Felipe Contreras --- xdiff/xmerge.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/xdiff/xmerge.c b/xdiff/xmerge.c index b5b3f56f92..d9b3a0dccd 100644 --- a/xdiff/xmerge.c +++ b/xdiff/xmerge.c @@ -333,7 +333,7 @@ static int xdl_refine_conflicts(xdfenv_t *xe1, xdfenv_t *xe2, xdmerge_t *m, mmfile_t t1, t2; xdfenv_t xe; xdchange_t *xscr, *x; - int i1 = m->i1, i2 = m->i2; + int i0 = m->i0, i1 = m->i1, i2 = m->i2; /* let's handle just the conflicts */ if (m->mode) @@ -384,6 +384,8 @@ static int xdl_refine_conflicts(xdfenv_t *xe1, xdfenv_t *xe2, xdmerge_t *m, m->next = m2; m = m2; m->mode = 0; + m->i0 = i0; + m->chg0 = 0; m->i1 = xscr->i1 + i1; m->chg1 = xscr->chg1; m->i2 = xscr->i2 + i2; -- 2.32.0