From patchwork Mon Feb 3 09:05:13 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Patchwork-Id: 13957092 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 172651FFC4C; Mon, 3 Feb 2025 09:05:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738573528; cv=none; b=NeT1ZalMW2dKtbvxvA+8XUxVB5JLahe8wMUZJZgiSnHarwhMb8HCLQ8G8NQGnORvI9QSq8JQ3eWAc4yc1sDbpyJ923N9bSv3w+YokVklZJwkMQaIlSw+uIE5jDRrYnv02kWR3ZWCMTufh+FqF/k4wnWps2z1+3hAszaU+v1Myr8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738573528; c=relaxed/simple; bh=fJM1dVn7zNhQ0eUj0mWU+BrWz8rCvgfwxzZIAbjOWds=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=GXHYIHvoMEIWsFaqFoCMJGL6e3KlccbOjhlazTlSVOkvgtLNsqzKhrI9VC1eURSPnPrJF5thaEm7Xqhk5Lil86sOZAV+yZ4LW5Bz9wTCmt/bl/6HRBx9HtUQ+t7DkElqVtFKw9Ao6yn4mo3wsbQhlu0eqYWLjuFN73Usr5uqwfA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=nvEN1cOm; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=oF1rtIul; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="nvEN1cOm"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="oF1rtIul" From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1738573524; 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: in-reply-to:in-reply-to:references:references; bh=tIWdgZoCmwWBnzk969udACPDuwBISkKWyW+kvFZi0zY=; b=nvEN1cOmn06k49QOVYgcSYuPY5VASet5LsKlrY5DYUZOHO4UmeYOuTHYyWx2OLJ4wkvFT2 ja29nLqXV6qQBiSPYRZZ8jD4RgMVrGmKu10RGdVABquOEtfTIpNicZN5WA4ArSK5CibbOo idVN3IMAor/2EQHweC5iQp7PvxrNVEg3kdiDD0JPtJe8WumBoOh6ZLAnsgNPLnoviMOAaY FxooXiVCuBCUq1eYPuAaqNED5jsajGMiiMYPUXeWXJqAegS0Pmwu5Pt8D6ojtc+2j3MNjK QZS/YhVUAe8sYq817HUGYzz+UdOHcqqnevqre9JX80n6T3KMbdb8FefbljQMTA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1738573524; 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: in-reply-to:in-reply-to:references:references; bh=tIWdgZoCmwWBnzk969udACPDuwBISkKWyW+kvFZi0zY=; b=oF1rtIulgN3B5woeBiKpzvQTVwGp3aSYHc5lUe24f1IDKPQ9ufAslpGaab29OU3BJWg1nG EV6VnsFpjI1gEyCQ== Date: Mon, 03 Feb 2025 10:05:13 +0100 Subject: [PATCH 12/16] selftests: vDSO: parse_vdso: Test __SIZEOF_LONG__ instead of ULONG_MAX Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250203-parse_vdso-nolibc-v1-12-9cb6268d77be@linutronix.de> References: <20250203-parse_vdso-nolibc-v1-0-9cb6268d77be@linutronix.de> In-Reply-To: <20250203-parse_vdso-nolibc-v1-0-9cb6268d77be@linutronix.de> To: Kees Cook , Eric Biederman , Shuah Khan , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt , Andy Lutomirski , Thomas Gleixner , Vincenzo Frascino Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, llvm@lists.linux.dev, =?utf-8?q?Thomas_We?= =?utf-8?q?i=C3=9Fschuh?= X-Developer-Signature: v=1; a=ed25519-sha256; t=1738573516; l=1086; i=thomas.weissschuh@linutronix.de; s=20240209; h=from:subject:message-id; bh=fJM1dVn7zNhQ0eUj0mWU+BrWz8rCvgfwxzZIAbjOWds=; b=P2jF09IdnCieXPEKGoemdM93wx2FWHeUgvh77I2DZzUgYMzUUEK/15O2kADdMBCByL/IGRMDb XPonFfZ5batAjxJINdtO2IIyDvSP2J2y/IOTq5G6FHdWQBmcgPx7uiA X-Developer-Key: i=thomas.weissschuh@linutronix.de; a=ed25519; pk=pfvxvpFUDJV2h2nY0FidLUml22uGLSjByFbM6aqQQws= According to limits.h(2) ULONG_MAX is only guaranteed to expand to an expression, not a symbolic constant which can be evaluated by the preprocessor. Specifically the definition of ULONG_MAX from nolibc can no be evaluated by the preprocessor. To provide compatibility with nolibc, check with __SIZEOF_LONG__ instead, with is provided directly by the preprocessor and therefore always a symbolic constant. Signed-off-by: Thomas Weißschuh --- tools/testing/selftests/vDSO/parse_vdso.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/vDSO/parse_vdso.c b/tools/testing/selftests/vDSO/parse_vdso.c index 200c534cc70e2c2381fce3be5c0ebe4cb5675e84..902b8f9984a1f70049d46bcd4f199df24f507dcb 100644 --- a/tools/testing/selftests/vDSO/parse_vdso.c +++ b/tools/testing/selftests/vDSO/parse_vdso.c @@ -26,7 +26,7 @@ /* And here's the code. */ #ifndef ELF_BITS -# if ULONG_MAX > 0xffffffffUL +# if __SIZEOF_LONG__ >= 8 # define ELF_BITS 64 # else # define ELF_BITS 32