From patchwork Mon Feb 19 23:11:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Malcolm X-Patchwork-Id: 203343 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:693c:2685:b0:108:e6aa:91d0 with SMTP id mn5csp86954dyc; Mon, 19 Feb 2024 15:12:11 -0800 (PST) X-Forwarded-Encrypted: i=3; AJvYcCUAYIbQy529MsQM2842eQWKkeH24aTuFA0+qT8k1hTes7qY6J+ONjIJ8VlqmkELMqtDlzuqyquNSRDU2e2K4Mmk7LB5/g== X-Google-Smtp-Source: AGHT+IGz/rf0DR+f2N7BwqkITcSOfhNhoamk7x+lRwxlIHskm4xvVNaAI5MhOSxLRtF6HIqTtvLu X-Received: by 2002:a05:6102:22c7:b0:470:4638:5423 with SMTP id a7-20020a05610222c700b0047046385423mr3574202vsh.22.1708384331702; Mon, 19 Feb 2024 15:12:11 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1708384331; cv=pass; d=google.com; s=arc-20160816; b=V5cl4wNsvjzF6KzwevtBi5507gur2WYMSgLV2QgdbcYPt6cwsXozGn6+bNwUoMXgCO IueQCTsFn2XeGstkifGRTLZQUl0oDiIceyTiNgeh5yAdXfl5TPrM9emTTzL4WBO4r8bB eoF0oV5AGLh3NOhxi4MYUoq5Zu6QReNH9aXSex8bndxPFMpZhCyTCDIPrlkdwSGAxD7T DirmWNS3rzNdCJiUz/a+6rxvOnZB/f+BQTYgaJreMCtbJNLcx/WrVBorhcrm/S+HrGtg zcvdOS/b+3qkHhErtTiOhblnei5Me+Lx/Rioj7Ilg2pAAKCSu1/9boofg5scrr4j9f5O 9WQQ== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=errors-to:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:message-id:date:subject:cc:to:from:dkim-signature :arc-filter:dmarc-filter:delivered-to; bh=/jpiY6hFjFxWIzNQRH/bbxDsy0dczWV0BAOkevuXKJY=; fh=NXemEfxTRbZtBxUkxR2ehQUaYlcDfMdzPkO8MChVQE4=; b=zHNIFL1NECHaBUns3Kft6TKkrHguujFTxHqvBdH3arsmRmyYKw260DZc2/+jmncucn cSvUterZU2uVOqBFqj4mD3+Ts9/dVrv1U0bTSyhGZHKo2JwPMvBZ8uIvKNNvqPoy2iEO cTiWQD1Zeyp5K83kbv8GolcfvhnxZZLagcdWo7TVU6cDZCEYfC71/ZiOK/ra4Pzz8735 slQhDAg4cEDv4ZtHY2TS7zHPnc9OBJDMQHbjqaPnIe09qtwA49Lsn2Do7Zn+/huUFBXs t+RI1rWVq5K5Ryx9FwOJ0M8WDLwQT3mTjI/RUnWBi8Zne3MjikvPI4sEY4GTezUcojRZ ewfg==; dara=google.com ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=Eq9dEd7s; arc=pass (i=1); spf=pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 2620:52:3:1:0:246e:9693:128c as permitted sender) smtp.mailfrom="gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: from server2.sourceware.org (server2.sourceware.org. [2620:52:3:1:0:246e:9693:128c]) by mx.google.com with ESMTPS id o26-20020ac8555a000000b0042e02b28744si4701019qtr.508.2024.02.19.15.12.11 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Feb 2024 15:12:11 -0800 (PST) Received-SPF: pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 2620:52:3:1:0:246e:9693:128c as permitted sender) client-ip=2620:52:3:1:0:246e:9693:128c; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=Eq9dEd7s; arc=pass (i=1); spf=pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 2620:52:3:1:0:246e:9693:128c as permitted sender) smtp.mailfrom="gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 4DAEA3858C74 for ; Mon, 19 Feb 2024 23:12:11 +0000 (GMT) X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by sourceware.org (Postfix) with ESMTPS id 544703858D28 for ; Mon, 19 Feb 2024 23:11:27 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 544703858D28 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=redhat.com ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 544703858D28 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1708384289; cv=none; b=bNr9H6yzCwA7AmQd+OJstV46xx9dHx462yDc/Z4dm2FLataLs3rg1UpAED+OnI5VDN4GZp3I758Kk73qtp/wv2HD4pSzzn9TA2OFW9vMeKM5CzfUpJ3d5NBsB2bGX85ngD1Fy9p6BYZ2vFwBzVmzXjnzJVnuJNplkvZ0u7X6XFk= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1708384289; c=relaxed/simple; bh=Q/y5vqFrSGGZHBNhI1HPyHh0m1fTItHWB97KLvDwqKQ=; h=DKIM-Signature:From:To:Subject:Date:Message-Id:MIME-Version; b=awjxkxN+nnlTq+m9xXNGfS0Rxd+Mecqrl5DzSe7B7anBjiDXR+ua3hZxVI5eL78zYKdEs2leV6AJzAjDqY944iwpSO/2aZ5+SYYqr6eNVgat9dIsSvSwxwdtET0HLiEBZbaIw2mB/K+ne5awUlfCUtr+/q2jMmSY91YIJWYE108= ARC-Authentication-Results: i=1; server2.sourceware.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1708384287; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=/jpiY6hFjFxWIzNQRH/bbxDsy0dczWV0BAOkevuXKJY=; b=Eq9dEd7s4/rIZnSn4hivWdrHpqYlB/GunEEaCxk6POJa1xu92a+nCrVi0UuN9HOa2fB/GY jJ159atbLafG8IdkJD6ALc9zFBdStvxwQ/uDOKn933X1TuYFBmLLrP1hmS+o9D2r6GNKZF j/tk9M6+hRIzdRvEq58+YKisvoNseN4= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-327-vscpOhaZN8CgVw-ZOG-ycQ-1; Mon, 19 Feb 2024 18:11:23 -0500 X-MC-Unique: vscpOhaZN8CgVw-ZOG-ycQ-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id DCDAF83B9C8 for ; Mon, 19 Feb 2024 23:11:22 +0000 (UTC) Received: from t14s.localdomain.com (unknown [10.22.34.1]) by smtp.corp.redhat.com (Postfix) with ESMTP id B8746492BE2; Mon, 19 Feb 2024 23:11:22 +0000 (UTC) From: David Malcolm To: gcc-patches@gcc.gnu.org Cc: David Malcolm Subject: [pushed] analyzer, testsuite: add regression test [PR110520] Date: Mon, 19 Feb 2024 18:11:21 -0500 Message-Id: <20240219231121.3065558-1-dmalcolm@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.10 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-Spam-Status: No, score=-11.5 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_NONE, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1791370808603775441 X-GMAIL-MSGID: 1791370808603775441 Tested on x86_64-pc-linux-gnu. Pushed to trunk as r14-9075-geb37ea529745c3. gcc/testsuite/ChangeLog: PR analyzer/110520 * c-c++-common/analyzer/null-deref-pr110520.c: New test. Signed-off-by: David Malcolm --- gcc/testsuite/c-c++-common/analyzer/null-deref-pr110520.c | 8 ++++++++ 1 file changed, 8 insertions(+) create mode 100644 gcc/testsuite/c-c++-common/analyzer/null-deref-pr110520.c diff --git a/gcc/testsuite/c-c++-common/analyzer/null-deref-pr110520.c b/gcc/testsuite/c-c++-common/analyzer/null-deref-pr110520.c new file mode 100644 index 00000000000..b57027689ee --- /dev/null +++ b/gcc/testsuite/c-c++-common/analyzer/null-deref-pr110520.c @@ -0,0 +1,8 @@ +#include "analyzer-decls.h" + +int main(void) { + char buf[] = "0"; + int *ptr = (int *)(__builtin_strlen(buf) - 1); + __analyzer_eval((__builtin_strlen(buf)) == 1); /* { dg-warning "TRUE" } */ + *ptr = 10086; /* { dg-warning "dereference of NULL 'ptr'" } */ +}