From patchwork Thu May 13 20:03:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: David Gow X-Patchwork-Id: 439155 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B2CB6C433B4 for ; Thu, 13 May 2021 20:03:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8416B613DE for ; Thu, 13 May 2021 20:03:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232274AbhEMUFF (ORCPT ); Thu, 13 May 2021 16:05:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33292 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232241AbhEMUFE (ORCPT ); Thu, 13 May 2021 16:05:04 -0400 Received: from mail-qk1-x74a.google.com (mail-qk1-x74a.google.com [IPv6:2607:f8b0:4864:20::74a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5ADFEC06174A for ; Thu, 13 May 2021 13:03:54 -0700 (PDT) Received: by mail-qk1-x74a.google.com with SMTP id b3-20020a05620a0cc3b02902e9d5ca06f2so20277247qkj.19 for ; Thu, 13 May 2021 13:03:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:message-id:mime-version:subject:from:to:cc :content-transfer-encoding; bh=+7MBFOMP+9qhj4nTOUAyFZTGUvJgJzKaN8FiT0vK5W0=; b=LytmX3GH84CK+JYXC6VsjxILP1fGNOki49+2NV1X6rGRNoXVNQm2gFhAbzQ2qcxogZ Hwc0kn7Okl2PK7MbBhk6tP92prP8Yf4tR/VKeiH1gqxpwC4h16fBrvPSHV0CJqIjfIbR /rW458L0dwQ6Qo5nyrCJTf7GZoOi7cXDrItMBVtynWg+2DqO6WC8NOZpFbgk4phHQFnQ ol5N14qR4H9x3F5fSvrFBLFdpS4HfxGwslQel95kojG3ysyKLapA/hj5tZNt96A8Pw0c zRibIIriE6xFK66jPixIWG9xcGX1dlZuNT295Av80yogihYZOvrjTHBbHjeIJCHlaUNr +lTw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc :content-transfer-encoding; bh=+7MBFOMP+9qhj4nTOUAyFZTGUvJgJzKaN8FiT0vK5W0=; b=E5zLyFh/lD+svLcXHE+ZQd0pfMG8bu3uswVSUNIakLz1+DkO/IeSj/ySoWGh84WGF6 7GhyUYSz9fs9XcSiz1+lsFeK3HhaikH7FEdKhLIfn9U6XZjjW9S7xvKI67R+LEzYPZ1D vmlXv6fIgX1ycHP4vnox+ycx/mQNtUNB3+GtUgVuPuX4V+BDqQ3LFSXmmP3rYsiUzah1 MHDb8ht4jFsq/jr38rubCOVR+jLLxaFGcOZQz5gMWhj4sbx2swkFxtFtCUditZFHQ4oV Q6o61djgr52J9UmvI1XwPSBX2tN5943PP2ussxS+UJwdcHFVUT6Yo8ZB32G2S9k/xcqf fsuw== X-Gm-Message-State: AOAM532ygO5vudd/P/aNhzq0+7tTnbDyDKJFN3QRgRWeqzoa4+jjumbJ KF0nrsd2NHAktJVVglp0SjglsRVl+bm/ow== X-Google-Smtp-Source: ABdhPJwF/HNk4eZe2OFi8GWBMFB0qI61s8TnYScLURduynGnfYqhBDlgCvotGuT6/BsWnj6jX4cqYtJDMoczow== X-Received: from spirogrip.svl.corp.google.com ([2620:15c:2cb:201:5f61:8ca4:879b:809e]) (user=davidgow job=sendgmr) by 2002:a0c:9b83:: with SMTP id o3mr14712045qve.4.1620936233432; Thu, 13 May 2021 13:03:53 -0700 (PDT) Date: Thu, 13 May 2021 13:03:50 -0700 Message-Id: <20210513200350.854429-1-davidgow@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.31.1.751.gd2f1c929bd-goog Subject: [PATCH] kunit: Add gnu_printf specifiers From: David Gow To: Brendan Higgins , Shuah Khan Cc: linux-kselftest@vger.kernel.org, kunit-dev@googlegroups.com, linux-kernel@vger.kernel.org, David Gow Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Some KUnit functions use variable arguments to implement a printf-like format string. Use the __printf() attribute to let the compiler warn if invalid format strings are passed in. If the kernel is build with W=1, it complained about the lack of these specifiers, e.g.: ../lib/kunit/test.c:72:2: warning: function ‘kunit_log_append’ might be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format] Signed-off-by: David Gow Acked-by: Brendan Higgins --- include/kunit/test.h | 2 +- lib/kunit/string-stream.h | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/include/kunit/test.h b/include/kunit/test.h index 49601c4b98b8..af2e386b867c 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -610,7 +610,7 @@ static inline void *kunit_kzalloc(struct kunit *test, size_t size, gfp_t gfp) void kunit_cleanup(struct kunit *test); -void kunit_log_append(char *log, const char *fmt, ...); +void __printf(2, 3) kunit_log_append(char *log, const char *fmt, ...); /* * printk and log to per-test or per-suite log buffer. Logging only done diff --git a/lib/kunit/string-stream.h b/lib/kunit/string-stream.h index fe98a00b75a9..5e94b623454f 100644 --- a/lib/kunit/string-stream.h +++ b/lib/kunit/string-stream.h @@ -35,9 +35,9 @@ struct string_stream *alloc_string_stream(struct kunit *test, gfp_t gfp); int __printf(2, 3) string_stream_add(struct string_stream *stream, const char *fmt, ...); -int string_stream_vadd(struct string_stream *stream, - const char *fmt, - va_list args); +int __printf(2, 0) string_stream_vadd(struct string_stream *stream, + const char *fmt, + va_list args); char *string_stream_get_string(struct string_stream *stream);