From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 2140) id 327453858028; Wed, 14 Jun 2023 19:17:38 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 327453858028 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1686770258; bh=vwBqpBa8EXGb4+iDsBHp/xjfLritm0h97cyufrNsc/Y=; h=From:To:Subject:Date:From; b=j/qt9O0LUfVcKhZ+CTm1D08rgHjin/HeY+o3mkFcontDLeicI9XYGGVptSvoldbtd 4XdsQXi6q/ausBuEzopeguJcUuRM5SYxO+XzqffX/IubzE2IQSxde6ZHETDDLW9tLL Khk7+W41wSK8iMhl8sclbWKAQT6Uv6mLcExaOJF4= Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Alexandre Oliva To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc(refs/users/aoliva/heads/testme)] [libstdc++] [testsuite] expect zero entropy matching implementation X-Act-Checkin: gcc X-Git-Author: Alexandre Oliva X-Git-Refname: refs/users/aoliva/heads/testme X-Git-Oldrev: f5af2cc812646f8d8047604cdf40969b6c346f4a X-Git-Newrev: ee4bf43778b2b1b1a743d0ade40ba44ccf27a4ca Message-Id: <20230614191738.327453858028@sourceware.org> Date: Wed, 14 Jun 2023 19:17:38 +0000 (GMT) List-Id: https://gcc.gnu.org/g:ee4bf43778b2b1b1a743d0ade40ba44ccf27a4ca commit ee4bf43778b2b1b1a743d0ade40ba44ccf27a4ca Author: Alexandre Oliva Date: Wed Jun 14 16:16:17 2023 -0300 [libstdc++] [testsuite] expect zero entropy matching implementation random_device::get_entropy() returns 0.0 when _GLIBCXX_USE_DEV_RANDOM is not defined, but the test expects otherwise. Adjust. for libstdc++-v3/ChangeLog * testsuite/26_numerics/random/random_device/entropy.cc: Expect get_entropy to return zero when _GLIBCXX_USE_DEV_RANDOM is not defined. TN: W609-009 Diff: --- .../testsuite/26_numerics/random/random_device/entropy.cc | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/libstdc++-v3/testsuite/26_numerics/random/random_device/entropy.cc b/libstdc++-v3/testsuite/26_numerics/random/random_device/entropy.cc index 9f529f5d814..3e6872c8a61 100644 --- a/libstdc++-v3/testsuite/26_numerics/random/random_device/entropy.cc +++ b/libstdc++-v3/testsuite/26_numerics/random/random_device/entropy.cc @@ -13,7 +13,13 @@ test01() VERIFY( std::random_device(token).entropy() == 0.0 ); using result_type = std::random_device::result_type; +#ifdef _GLIBCXX_USE_DEV_RANDOM const double max = std::numeric_limits::digits; +#else + // random_device::entropy() always returns 0.0 when + // _GLIBCXX_USE_DEV_RANDOM is not defined. + const double max = 0.0; +#endif for (auto token : { "/dev/random", "/dev/urandom" }) if (__gnu_test::random_device_available(token)) @@ -30,7 +36,7 @@ test01() VERIFY( entropy == max ); } - for (auto token : { "getentropy", "arc4random" }) + for (auto token : { "getentropy", "arc4random" }) if (__gnu_test::random_device_available(token)) { const double entropy = std::random_device(token).entropy();