From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 2181) id D321F3835431; Fri, 22 Jul 2022 07:07:40 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org D321F3835431 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Jonathan Wakely To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r11-10162] libstdc++: testsuite: Guard use of C99 std::log2 X-Act-Checkin: gcc X-Git-Author: Jonathan Wakely X-Git-Refname: refs/heads/releases/gcc-11 X-Git-Oldrev: 66e876a91b5d5c1a0c5067f2d8f1d531da3a81f8 X-Git-Newrev: 0bc62cb594d6459005e439fcf7769ecaa48f59b2 Message-Id: <20220722070740.D321F3835431@sourceware.org> Date: Fri, 22 Jul 2022 07:07:40 +0000 (GMT) X-BeenThere: libstdc++-cvs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libstdc++-cvs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 22 Jul 2022 07:07:40 -0000 https://gcc.gnu.org/g:0bc62cb594d6459005e439fcf7769ecaa48f59b2 commit r11-10162-g0bc62cb594d6459005e439fcf7769ecaa48f59b2 Author: Jonathan Wakely Date: Tue Jun 28 09:17:06 2022 +0100 libstdc++: testsuite: Guard use of C99 std::log2 This prevents the test from failing if the only thing not supported is the text printed to the log about the size of the floating-point type. libstdc++-v3/ChangeLog: * testsuite/20_util/from_chars/4.cc: Only use log2 if C99 math functions are available. (cherry picked from commit 30aea28bd30027e0a6be8e3077828256779954b3) Diff: --- libstdc++-v3/testsuite/20_util/from_chars/4.cc | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libstdc++-v3/testsuite/20_util/from_chars/4.cc b/libstdc++-v3/testsuite/20_util/from_chars/4.cc index 7cee4dcbc23..4064f1d4177 100644 --- a/libstdc++-v3/testsuite/20_util/from_chars/4.cc +++ b/libstdc++-v3/testsuite/20_util/from_chars/4.cc @@ -300,9 +300,11 @@ test_max_mantissa() if (Float_limits::is_iec559 && Float_limits::digits < UInt_limits::digits) { +#ifdef _GLIBCXX_USE_C99_MATH_TR1 std::printf("Testing %d-bit float, using %zu-bit integer\n", Float_limits::digits + (int)std::log2(Float_limits::max_exponent) + 1, sizeof(UIntT) * __CHAR_BIT__); +#endif std::from_chars_result res; FloatT flt;