From patchwork Mon Jul 31 20:36:23 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luc Van Oostenryck X-Patchwork-Id: 9873117 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 07F986037D for ; Mon, 31 Jul 2017 20:36:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EB76B27F3E for ; Mon, 31 Jul 2017 20:36:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DF7C1285DC; Mon, 31 Jul 2017 20:36:42 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.3 required=2.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, RCVD_IN_SORBS_SPAM, T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 916D227F3E for ; Mon, 31 Jul 2017 20:36:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751217AbdGaUgm (ORCPT ); Mon, 31 Jul 2017 16:36:42 -0400 Received: from mail-wr0-f194.google.com ([209.85.128.194]:38577 "EHLO mail-wr0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751046AbdGaUgk (ORCPT ); Mon, 31 Jul 2017 16:36:40 -0400 Received: by mail-wr0-f194.google.com with SMTP id g32so15233219wrd.5 for ; Mon, 31 Jul 2017 13:36:40 -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; bh=uvcbJALMMnzi9i1sOxG0JLV6zr5cTPaM/rEIZ6fc8Gg=; b=hQdBjr2Bwm772XBoLDUeVeWYq4TZ03isDkYt4QbpxsSEtAdPHZCxINQcxCMFAGDJs7 GoHuHorbe0uJ5193IPTtEChANu6YLJsKUcQYWPj7U9XpSJvzpibZu9lHQfl1gZqQwkT+ CGzs/ed2NWhUCgcbXb+zoactofpC2ijWt2PWfHnvy5KctNsUirmIuOk4J+/7NYu8EMJY RQGvAeh7k9GH3fIQrb3JbBMKwjFceVVdoKr2GBRnyVqF6iXbx/Wpgt/IH9RSy5cC3z7u W+bpRa656vCSyKBKaNI5fwt14sO4Zo7E+i7TM4Kiawx7aKQGc7NKjlRT4QnXWbSg5Q/y wGgg== 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; bh=uvcbJALMMnzi9i1sOxG0JLV6zr5cTPaM/rEIZ6fc8Gg=; b=DYRZajNNfvOij1OcIoM+wRA/wp8kawDFwJNILL10W49RKkhkQiExSm+5cBvfCig8Dc svbFai43J0gfiBbtj/CsS1AWRwW2I3rtkQVYmXBmDcoWjavugYytyby5875bbvsSuff+ +Fr1eFvffpfUkyXDzvxtT/nhrltcSmMvSOAt4WYJZu6pVH2kgOeddpLBYvdTK7Ls71PP UFkranE0lhXE6CYWtfA9xQcLQQTAgbjNadcOmUsdI0SUdVIoq9YwLifXS4euzJi/LEh8 //7NgcALl6OHth0EuRI4r/DISEcbBe6otTJ9EZHMyZ2sD7/2DaYquLQMxsjhFVlOWUsT FahA== X-Gm-Message-State: AIVw111YCtRxZErPtVK5rubWZILsG2YueY5FqtL2YEhd968BwuOXCysy oolkhOe1hr+O5a8o6cA= X-Received: by 10.223.151.82 with SMTP id r76mr13334517wrb.6.1501533399860; Mon, 31 Jul 2017 13:36:39 -0700 (PDT) Received: from localhost.localdomain ([2a02:a03f:40c4:ab00:f976:d678:e4f6:5c60]) by smtp.gmail.com with ESMTPSA id n7sm47682350wrb.37.2017.07.31.13.36.38 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 31 Jul 2017 13:36:39 -0700 (PDT) From: Luc Van Oostenryck To: Christopher Li Cc: linux-sparse@vger.kernel.org, Michael Stefaniuc , Luc Van Oostenryck Subject: [PATCH v3 6/7] fix some crashes in add_dominators() Date: Mon, 31 Jul 2017 22:36:23 +0200 Message-Id: <20170731203624.58971-7-luc.vanoostenryck@gmail.com> X-Mailer: git-send-email 2.13.2 In-Reply-To: <20170731203624.58971-1-luc.vanoostenryck@gmail.com> References: <20170731203624.58971-1-luc.vanoostenryck@gmail.com> Sender: linux-sparse-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sparse@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Luc Van Oostenryck --- memops.c | 2 ++ validation/crash-add-doms.c | 22 ++++++++++++++++++++++ 2 files changed, 24 insertions(+) create mode 100644 validation/crash-add-doms.c diff --git a/memops.c b/memops.c index 5efdd6f2d..aeacdf566 100644 --- a/memops.c +++ b/memops.c @@ -29,6 +29,8 @@ static int find_dominating_parents(pseudo_t pseudo, struct instruction *insn, FOR_EACH_PTR_REVERSE(parent->insns, one) { int dominance; + if (!one->bb) + continue; if (one == insn) goto no_dominance; dominance = dominates(pseudo, insn, one, local); diff --git a/validation/crash-add-doms.c b/validation/crash-add-doms.c new file mode 100644 index 000000000..54ad93e84 --- /dev/null +++ b/validation/crash-add-doms.c @@ -0,0 +1,22 @@ +char a; +int b; +void c(void) +{ + if (0) { + char *d; + for (;;) + for (;;) +e: + *d *= (a && 0) ^ b && *d; + } + goto e; +} + + +/* + * check-name: crash add-doms + * check-command: test-linearize $file + * + * check-error-ignore + * check-output-ignore + */