Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F0CD7C6379F for ; Sun, 19 Feb 2023 19:09:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231303AbjBSTEO (ORCPT ); Sun, 19 Feb 2023 14:04:14 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32810 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231279AbjBSTEM (ORCPT ); Sun, 19 Feb 2023 14:04:12 -0500 Received: from todd.t-8ch.de (todd.t-8ch.de [IPv6:2a01:4f8:c010:41de::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 78145FF00 for ; Sun, 19 Feb 2023 11:04:10 -0800 (PST) Date: Sun, 19 Feb 2023 19:04:04 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=t-8ch.de; s=mail; t=1676833447; bh=kPnfaPn7CSZ8/i9pk9BccYPAG8gCoKhNdxd/Luo1jt0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=SFEaLHgRb532LB53TYjOoiCMhR7nR9nP2oyfFHsrepHL8vOewbwZftbbDyfEQF8VZ 2rV3l0eeMojZCe9x7TC2i/CAocnVfJg12+1oOfdx5K0jid7xnFywY/CWSx2/FKW8G6 OXX75ofwMqOdHEpz8dDbgnIO9jB9VlqZhww3aVvc= From: Thomas =?utf-8?Q?Wei=C3=9Fschuh?= To: Willy Tarreau Cc: Vincent Dagonneau , linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH 4/4] tools/nolibc: add tests for the integer limits in stdint.h Message-ID: References: <20230219185133.14576-1-w@1wt.eu> <20230219185133.14576-5-w@1wt.eu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230219185133.14576-5-w@1wt.eu> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Feb 19, 2023 at 07:51:33PM +0100, Willy Tarreau wrote: > From: Vincent Dagonneau > > This commit adds tests for the limits added in a previous commit. The > limits are defined in decimal in stdint.h and as hexadecimal in the > tests (e.g. 0x7f = 127 or 0x80 = -128). Hopefully it catches some o the > most egregious mistakes. > > Signed-off-by: Vincent Dagonneau > [wt: rely on the compiler-provided __SIZEOF_LONG__ to decide what values > to expect, and detect its miss to avoid reporting false errors] > Signed-off-by: Willy Tarreau > --- > tools/testing/selftests/nolibc/nolibc-test.c | 45 +++++++++++++++++++- > 1 file changed, 44 insertions(+), 1 deletion(-) > > diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c > index 882140508d56..290249d6da30 100644 > --- a/tools/testing/selftests/nolibc/nolibc-test.c > +++ b/tools/testing/selftests/nolibc/nolibc-test.c > @@ -561,7 +561,50 @@ int run_syscall(int min, int max) > CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WNOHANG), -1, ECHILD); break; > CASE_TEST(write_badf); EXPECT_SYSER(1, write(-1, &tmp, 1), -1, EBADF); break; > CASE_TEST(write_zero); EXPECT_SYSZR(1, write(1, &tmp, 0)); break; > - case __LINE__: > + CASE_TEST(limit_int8_max); EXPECT_EQ(1, INT8_MAX, (int8_t) 0x7f); break; > + CASE_TEST(limit_int8_min); EXPECT_EQ(1, INT8_MIN, (int8_t) 0x80); break; > + CASE_TEST(limit_uint8_max); EXPECT_EQ(1, UINT8_MAX, (uint8_t) 0xff); break; > + CASE_TEST(limit_int16_max); EXPECT_EQ(1, INT16_MAX, (int16_t) 0x7fff); break; > + CASE_TEST(limit_int16_min); EXPECT_EQ(1, INT16_MIN, (int16_t) 0x8000); break; > + CASE_TEST(limit_uint16_max); EXPECT_EQ(1, UINT16_MAX, (uint16_t) 0xffff); break; > + CASE_TEST(limit_int32_max); EXPECT_EQ(1, INT32_MAX, (int32_t) 0x7fffffff); break; > + CASE_TEST(limit_int32_min); EXPECT_EQ(1, INT32_MIN, (int32_t) 0x80000000); break; > + CASE_TEST(limit_uint32_max); EXPECT_EQ(1, UINT32_MAX, (uint32_t) 0xffffffff); break; > + CASE_TEST(limit_int64_max); EXPECT_EQ(1, INT64_MAX, (int64_t) 0x7fffffffffffffff); break; > + CASE_TEST(limit_int64_min); EXPECT_EQ(1, INT64_MIN, (int64_t) 0x8000000000000000); break; > + CASE_TEST(limit_uint64_max); EXPECT_EQ(1, UINT64_MAX, (uint64_t) 0xffffffffffffffff); break; > + CASE_TEST(limit_int_least8_max); EXPECT_EQ(1, INT_LEAST8_MAX, (int_least8_t) 0x7f); break; > + CASE_TEST(limit_int_least8_min); EXPECT_EQ(1, INT_LEAST8_MIN, (int_least8_t) 0x80); break; > + CASE_TEST(limit_uint_least8_max); EXPECT_EQ(1, UINT_LEAST8_MAX, (uint_least8_t) 0xff); break; > + CASE_TEST(limit_int_least16_max); EXPECT_EQ(1, INT_LEAST16_MAX, (int_least16_t) 0x7fff); break; > + CASE_TEST(limit_int_least16_min); EXPECT_EQ(1, INT_LEAST16_MIN, (int_least16_t) 0x8000); break; > + CASE_TEST(limit_uint_least16_max); EXPECT_EQ(1, UINT_LEAST16_MAX, (uint_least16_t) 0xffff); break; > + CASE_TEST(limit_int_least32_max); EXPECT_EQ(1, INT_LEAST32_MAX, (int_least32_t) 0x7fffffff); break; > + CASE_TEST(limit_int_least32_min); EXPECT_EQ(1, INT_LEAST32_MIN, (int_least32_t) 0x80000000); break; > + CASE_TEST(limit_uint_least32_max); EXPECT_EQ(1, UINT_LEAST32_MAX, (uint_least32_t) 0xffffffffU); break; > +#if __SIZEOF_LONG__ == 8 > + CASE_TEST(limit_int_least64_max); EXPECT_EQ(1, INT_LEAST64_MAX, (int_least64_t) 0x7fffffffffffffffLL); break; > + CASE_TEST(limit_int_least64_min); EXPECT_EQ(1, INT_LEAST64_MIN, (int_least64_t) 0x8000000000000000LL); break; > + CASE_TEST(limit_uint_least64_max); EXPECT_EQ(1, UINT_LEAST64_MAX, (uint_least64_t) 0xffffffffffffffffULL); break; int64 types are also defined for 32bit platforms, but the tests are only ran for 64bits. Is this intentional? > + CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, (intptr_t) 0x8000000000000000LL); break; > + CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, (intptr_t) 0x7fffffffffffffffLL); break; > + CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, (uintptr_t) 0xffffffffffffffffULL); break; > + CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, (ptrdiff_t) 0x8000000000000000LL); break; > + CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, (ptrdiff_t) 0x7fffffffffffffffLL); break; > + CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, (size_t) 0xffffffffffffffffULL); break; > +#elif __SIZEOF_LONG__ == 4 > + CASE_TEST(limit_intptr_min); EXPECT_EQ(1, INTPTR_MIN, (intptr_t) 0x80000000); break; > + CASE_TEST(limit_intptr_max); EXPECT_EQ(1, INTPTR_MAX, (intptr_t) 0x7fffffff); break; > + CASE_TEST(limit_uintptr_max); EXPECT_EQ(1, UINTPTR_MAX, (uintptr_t) 0xffffffffU); break; > + CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, (ptrdiff_t) 0x80000000); break; > + CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, (ptrdiff_t) 0x7fffffff); break; > + CASE_TEST(limit_ptrdiff_min); EXPECT_EQ(1, PTRDIFF_MIN, (ptrdiff_t) 0x80000000); break; > + CASE_TEST(limit_ptrdiff_max); EXPECT_EQ(1, PTRDIFF_MAX, (ptrdiff_t) 0x7fffffff); break; ptrdiff tests are duplicate. > + CASE_TEST(limit_size_max); EXPECT_EQ(1, SIZE_MAX, (size_t) 0xffffffffU); break; > +#else > +# warning "__SIZEOF_LONG__ is undefined" Why not #error? > +#endif /* __WORDSIZE == 64 */ #endif comment is now incorrect > + case __LINE__: The "case" should be further left, no? > return ret; /* must be last */ > /* note: do not set any defaults so as to permit holes above */ > } > -- > 2.35.3 >