From patchwork Fri Jun 12 20:10:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "H.J. Lu" X-Patchwork-Id: 39594 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id A8F9B395B82A; Fri, 12 Jun 2020 20:11:04 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org A8F9B395B82A DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1591992664; bh=z43lccmwObyJKJGKkf6g7+LZfljeXuT6R1oge5GIb8A=; h=To:Subject:Date:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:From; b=otvkOleihEW+Nfn0JFO3KyT38jUBEMMvLveI3HWz8xcRyGfG4YmJ5owEeNdw5zooI cE/UQqrtvLvQPFiajd3WsG4JWC9gJzSz7XuB8lUpgt34I+GxVzxD9CzEFULXwcwu1/ JgU1RUkzXXTUZqXL1cKvwl9ps6XAkgNq0kkF48iQ= X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from mail-pj1-x1043.google.com (mail-pj1-x1043.google.com [IPv6:2607:f8b0:4864:20::1043]) by sourceware.org (Postfix) with ESMTPS id DF701395B442 for ; Fri, 12 Jun 2020 20:10:59 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org DF701395B442 Received: by mail-pj1-x1043.google.com with SMTP id i4so4317987pjd.0 for ; Fri, 12 Jun 2020 13:10:59 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:mime-version :content-transfer-encoding; bh=z43lccmwObyJKJGKkf6g7+LZfljeXuT6R1oge5GIb8A=; b=YlEqh9vhieEDq93CkkVVRwKn2OqznuRu1IHINVwSp/pU4Og+o17ivu2vq7QCey+DTW SpT/MZ0wshN29c4uIm1UmjfUX6wCmrjsLXGbcCI0BIDpUW8gdhNFHbvXZPJKKHDeHHmG XBbM5nuWWES7VHcaWYn/iWjytu7Nl1YnooITeEqQdYHQGJjYVXDcZ6D/nOU8Ea2k/pn2 NLcTVUqKWi/AzIbSGtyFfr6MGsESCYy0F5Klw9/aZtUWBYRQPHRDATFT7tb1Zy43egzJ EK3qvPst6M6nrQNVFF7br55EmWwmVHtSIayk2Z4TtcknJyS7D9lJLeKVlkgeJUNfQU1+ LqxA== X-Gm-Message-State: AOAM531qpPsE4QHZxExqv+pYc4OOSkqVDT7zp60qC7H5rnxHjKRi+QPd qAJanajG6sjvrdTmU+caweP85+cB X-Google-Smtp-Source: ABdhPJxxu65CULMA8cxt5P6p7PFsTmg+BbuoOMD0sMBDeMHlws8zoNvSEU8jb8KeFMP0QIEy+wM1RA== X-Received: by 2002:a17:90b:19c4:: with SMTP id nm4mr621526pjb.66.1591992658801; Fri, 12 Jun 2020 13:10:58 -0700 (PDT) Received: from gnu-cfl-2.localdomain (c-69-181-90-243.hsd1.ca.comcast.net. [69.181.90.243]) by smtp.gmail.com with ESMTPSA id i12sm7038958pfk.180.2020.06.12.13.10.57 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Jun 2020 13:10:57 -0700 (PDT) Received: from gnu-cfl-2.localdomain (localhost [IPv6:::1]) by gnu-cfl-2.localdomain (Postfix) with ESMTP id 4B6B41A00D7 for ; Fri, 12 Jun 2020 13:10:56 -0700 (PDT) To: libc-alpha@sourceware.org Subject: [PATCH 1/4] strncmp: Add a testcase for page boundary [BZ #25933] Date: Fri, 12 Jun 2020 13:10:53 -0700 Message-Id: <20200612201056.228614-1-hjl.tools@gmail.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 X-Spam-Status: No, score=-13.5 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, GIT_PATCH_0, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: "H.J. Lu via Libc-alpha" From: "H.J. Lu" Reply-To: "H.J. Lu" Errors-To: libc-alpha-bounces@sourceware.org Sender: "Libc-alpha" Add a strncmp testcase to cover cases where one of strings ends on the page boundary. Reviewed-by: Carlos O'Donell --- string/test-strncmp.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/string/test-strncmp.c b/string/test-strncmp.c index d961ac4493..d0928a2864 100644 --- a/string/test-strncmp.c +++ b/string/test-strncmp.c @@ -403,6 +403,30 @@ check2 (void) free (s2); } +static void +check3 (void) +{ + size_t size = 32 * 4; + CHAR *s1 = (CHAR *) (buf1 + (BUF1PAGES - 1) * page_size); + CHAR *s2 = (CHAR *) (buf2 + (BUF1PAGES - 1) * page_size); + int exp_result; + + memset (s1, 'a', page_size); + memset (s2, 'a', page_size); + s1[(page_size / CHARBYTES) - 1] = (CHAR) 0; + + for (size_t s = 99; s <= size; s++) + for (size_t s1a = 31; s1a < 32; s1a++) + for (size_t s2a = 30; s2a < 32; s2a++) + { + CHAR *s1p = s1 + (page_size / CHARBYTES - s) - s1a; + CHAR *s2p = s2 + (page_size / CHARBYTES - s) - s2a; + exp_result = SIMPLE_STRNCMP (s1p, s2p, s); + FOR_EACH_IMPL (impl, 0) + check_result (impl, s1p, s2p, s, exp_result); + } +} + int test_main (void) { @@ -412,6 +436,7 @@ test_main (void) check1 (); check2 (); + check3 (); printf ("%23s", ""); FOR_EACH_IMPL (impl, 0)