Hello, On Mon, Mar 12, 2018 at 12:16 PM, John Maddock via Boost <boost@lists.boost.org> wrote:
On 12/03/2018 19:07, Lorenzo Caminiti via Boost wrote:
I noticed the following failure in Boost.TypeTraits regression tests on GCC 4.6 C++11. Any idea why this is failing?>
There's something different about that tester - there are several gcc-4.6 test runners in the matrix and they're all passing is_list_constructible_test bar that one. What/why the difference is there I have no idea :(
I don't think the error is limited to that tester. I get the same Boost.TypeTraits error in 2 Boost.Contract tests on that compiler/plaform. All these tests do is to #include <boost/type_traits.hpp>. For example, for one of them: Test output: igaztanaga-master-gcc-4.6c++11 - contract - old-auto / gcc-4.6c+ Rev cb62bbf20f4a0000ee6f16835b0c2dc92edea8cd / Sun, 11 Mar 2018 03:16:04 +0000 Compile [2018-03-11 09:51:14 UTC]: fail "C:/Programs/mingw-builds/x32-4.6.4-posix-dwarf-rev0/mingw32/bin/gcc-4.6.bat" -pipe -fmax-errors=1 -std=c++0x -m32 -O0 -fno-inline -Wall -march=i686 -DBOOST_ALL_NO_LIB=1 -DBOOST_CONTRACT_DISABLE_THREADS -DBOOST_CONTRACT_DYN_LINK -DBOOST_SYSTEM_DYN_LINK=1 -I".." -I"..\libs\contract\test\old" -c -o "c:\boost\master\results\boost\bin.v2\libs\contract\test\old-auto.test\gcc-4.6c+\dbg\dbg-symbl-off\old\auto.o" "..\libs\contract\test\old\auto.cpp" In file included from ../boost/type_traits.hpp:110:0, from ..\libs\contract\test\old\auto.cpp:11: ../boost/type_traits/is_list_constructible.hpp:36:61: error: expected class-name before 'decltype' compilation terminated due to -fmax-errors=1. Where auto.cpp (note auto.cpp:11 is the #include <boost/type_traits.hpp> line): // Copyright (C) 2008-2018 Lorenzo Caminiti // Distributed under the Boost Software License, Version 1.0 (see accompanying // file LICENSE_1_0.txt or a copy at http://www.boost.org/LICENSE_1_0.txt). // See: http://www.boost.org/doc/libs/release/libs/contract/doc/html/index.html // Test that OLD macro allows to use C++11 auto declarations. #include <boost/config.hpp> #include <boost/contract/old.hpp> #include <boost/type_traits.hpp> // ** line 11 ** #include <boost/static_assert.hpp> #include <boost/detail/lightweight_test.hpp> int main() { int x = -123; auto old_x = BOOST_CONTRACT_OLDOF(x); x = 123; BOOST_STATIC_ASSERT((boost::is_same<decltype(old_x), boost::contract::old_ptr<int> >::value)); #ifndef BOOST_CONTRACT_NO_OLDS BOOST_TEST_EQ(*old_x, -123); #endif BOOST_TEST_EQ(x, 123); boost::contract::virtual_* v = 0; char y = 'j'; auto old_y = BOOST_CONTRACT_OLDOF(v, y); y = 'k'; BOOST_STATIC_ASSERT((boost::is_same<decltype(old_y), boost::contract::old_ptr<char> >::value)); #ifndef BOOST_CONTRACT_NO_OLDS BOOST_TEST_EQ(*old_y, 'j'); #endif BOOST_TEST_EQ(y, 'k'); return boost::report_errors(); } Thanks, --Lorenzo