From patchwork Thu Jul 6 19:19:49 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: 9828791 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 C1607602CA for ; Thu, 6 Jul 2017 19:20:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B06602872C for ; Thu, 6 Jul 2017 19:20:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A10532872B; Thu, 6 Jul 2017 19:20:18 +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 6E26528716 for ; Thu, 6 Jul 2017 19:20:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752788AbdGFTUD (ORCPT ); Thu, 6 Jul 2017 15:20:03 -0400 Received: from mail-wr0-f193.google.com ([209.85.128.193]:34021 "EHLO mail-wr0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752826AbdGFTUC (ORCPT ); Thu, 6 Jul 2017 15:20:02 -0400 Received: by mail-wr0-f193.google.com with SMTP id k67so2596126wrc.1 for ; Thu, 06 Jul 2017 12:20:02 -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=nRp949QKivUsyHKaTFeYFsfDZLRbjFbzbCQ1yLsaKDI=; b=k58mcrTWR9+NQ0JP5E+KKuOWPVilFSwlGSoRxl/jqtBB9Y2hk+3TOxoZ5nsFCH4Yck s0Qhfqag238rGEs6MPAiEfAExMCTG0DGp/7pn786ekiyd32HhbCzmT4+JhN2GJ6Chx0+ 8XWmt5lOHoqdBkGPUaNBggzed2LOYffC2nnu7vGUH7bpQVF8Z+2g2koGQN2y6qoctVJQ gN7h/MiMj+CxObKZAwkzv05d1da/igk8vBu/BotP81ZLBZSYjvPWmBVqdJpmzmj3gyi3 IdLCTxLfMXJy/c4hlBeJOqTpzy0g/42waTM+pMOkhOPGbepOeduTxjKpizytu9sKGHmo x4Sw== 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=nRp949QKivUsyHKaTFeYFsfDZLRbjFbzbCQ1yLsaKDI=; b=qUvmKgcSTSyHgEuG4IU+JUXqm6ixiOqCOCoGuoEeVsmDMFWcs9+iOKjLM2lWgv4nzf c96DkumEUesVTAPcPn/5TMdj003iFys47RemxVDCMDhy06cRVMskSRG/obn4/hwOsMu9 i2LuM1eU/N08hIp6AIDSIRfV5GD3v3moDdO+D+JQk/A5riWBLUcmbL2tDpAanj/TYeN5 8XoT/b+awhY9uFoRKirl+V3p3rwyrhjPdFm/ZYmXsnlm1VqzBaglfMtmVmeGjwZeZNji TPzSmcAv8uKxxpxdQymLcweb21aWWk0NPf7Z06RNhXmFKn6SIp4zHF39YqlRBJuLFwrC POMw== X-Gm-Message-State: AKS2vOy7GJXxMw0Z5Ur/ixHsCMOSk3LKkkQK446VuGlCs1+MV5ZnFTym Y4sfdPoA3fBiiS7dhSA= X-Received: by 10.223.165.86 with SMTP id j22mr40479403wrb.147.1499368801351; Thu, 06 Jul 2017 12:20:01 -0700 (PDT) Received: from localhost.localdomain ([2a02:a03f:8ed:9a00:4423:4b1:a7de:145e]) by smtp.gmail.com with ESMTPSA id h6sm1105533wmf.31.2017.07.06.12.20.00 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 06 Jul 2017 12:20:00 -0700 (PDT) From: Luc Van Oostenryck To: linux-sparse@vger.kernel.org Cc: Christopher Li , Luc Van Oostenryck Subject: [PATCH 4/5] avoid some crashes in add_dominators() Date: Thu, 6 Jul 2017 21:19:49 +0200 Message-Id: <20170706191950.81268-5-luc.vanoostenryck@gmail.com> X-Mailer: git-send-email 2.13.0 In-Reply-To: <20170706191950.81268-1-luc.vanoostenryck@gmail.com> References: <20170706191950.81268-1-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 --- memops.c | 2 ++ validation/crash-add-doms.c | 22 ++++++++++++++++++++++ 2 files changed, 24 insertions(+) create mode 100644 validation/crash-add-doms.c Signed-off-by: Luc Van Oostenryck 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 + */