From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt1-x831.google.com (mail-qt1-x831.google.com [IPv6:2607:f8b0:4864:20::831]) by sourceware.org (Postfix) with ESMTPS id BA346397EC2D for ; Wed, 23 Jun 2021 23:59:21 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org BA346397EC2D Received: by mail-qt1-x831.google.com with SMTP id j12so3496888qtv.11 for ; Wed, 23 Jun 2021 16:59:21 -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:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=fjIQpgLEqIOmTj1LOgmsfG+lKi1FNc6jFuCZgx8JTt4=; b=dWBud8snt9AKRCGuCNY2dGz+2mi/UgQB5yeXlfiXxGGyaOp3ZlFvI75huMDM5+3r8h KmkuMionYRsh6ZItBGALxN2kxACgCIIIvrG4Ur1HAJBpN/IFkS5W267fx4tDFFaEBOyC tZYb/L+LE1BdIq8yvi+uBfN6U0TKryo8ACfbUquQN3EKl2fY5VwjeeBRuRrRiQYPJGL4 XIxdI3mz346F3FoiGWXnIqTqqA4BPu8mAZfp/Aivn+y9T4gGKraB2HVHQapb4//04SiH crS4vXDTyKbSzxidUbjzgg9+XZk5QIfLYENcICToByFqDRiLpKmDegnP/LeAzjgEZbwv /grg== X-Gm-Message-State: AOAM530KN+YIx4hHGFzU1f4zJbkNW4NEigUHIfRLMOgZIF1XQxAhu8NY 6F0Xv3QKYCsqncK/arKuouXxdRfXP6U= X-Google-Smtp-Source: ABdhPJy3flrSMuCqsHYtzW2f2wEr2gehQggh5gCtd9DiZ7JzZdMyj/4o1yNeCgvLhDx5tdZ6QCSefw== X-Received: by 2002:ac8:5fcf:: with SMTP id k15mr2346222qta.335.1624492761223; Wed, 23 Jun 2021 16:59:21 -0700 (PDT) Received: from localhost.localdomain (pool-173-75-15-191.pitbpa.fios.verizon.net. [173.75.15.191]) by smtp.googlemail.com with ESMTPSA id x19sm975849qtj.79.2021.06.23.16.59.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Jun 2021 16:59:20 -0700 (PDT) From: Noah Goldstein To: libc-alpha@sourceware.org Subject: [PATCH v1 1/2] String: Add three more overflow tests cases to test-strnlen.c Date: Wed, 23 Jun 2021 19:59:02 -0400 Message-Id: <20210623235902.1614933-1-goldstein.w.n@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-12.4 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-List-Received-Date: Wed, 23 Jun 2021 23:59:22 -0000 No bug. Just seem like relevant cases given that strnlen will use s + maxlen in many implementations. Signed-off-by: Noah Goldstein --- string/test-strnlen.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/string/test-strnlen.c b/string/test-strnlen.c index f53e09263f..bb5d9b5f04 100644 --- a/string/test-strnlen.c +++ b/string/test-strnlen.c @@ -117,6 +117,10 @@ do_overflow_tests (void) do_test (0, i, ~len + i, BIG_CHAR); do_test (0, i, ~len - buf_addr - i, BIG_CHAR); do_test (0, i, ~len - buf_addr + i, BIG_CHAR); + + do_test (0, i, -buf_addr, BIG_CHAR); + do_test (0, i, j - buf_addr, BIG_CHAR); + do_test (0, i, -buf_addr - j, BIG_CHAR); } } } -- 2.25.1