| 1 | // protect_test2.cpp |
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| 2 | // |
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| 3 | // Copyright 2020 Peter Dimov |
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| 4 | // Distributed under the Boost Software License, Version 1.0. |
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| 5 | // https://www.boost.org/LICENSE_1_0.txt |
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| 6 | |
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| 7 | #include <boost/bind/protect.hpp> |
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| 8 | #include <boost/core/lightweight_test_trait.hpp> |
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| 9 | #include <boost/config.hpp> |
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| 10 | |
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| 11 | #if defined(BOOST_MSVC) |
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| 12 | # pragma warning( disable: 4510 ) // default constructor could not be generated |
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| 13 | # pragma warning( disable: 4610 ) // class can never be instantiated - constructor required |
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| 14 | #endif |
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| 15 | |
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| 16 | template<class T, class F> void test( F ) |
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| 17 | { |
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| 18 | BOOST_TEST_TRAIT_SAME(typename T::result_type, typename F::result_type); |
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| 19 | } |
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| 20 | |
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| 21 | struct X |
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| 22 | { |
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| 23 | struct result_type {}; |
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| 24 | }; |
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| 25 | |
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| 26 | struct Y |
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| 27 | { |
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| 28 | }; |
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| 29 | |
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| 30 | template<class T, class U> struct inherit: T, U |
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| 31 | { |
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| 32 | }; |
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| 33 | |
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| 34 | template<class F> void test2( F ) |
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| 35 | { |
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| 36 | // test that F doesn't have ::result_type |
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| 37 | BOOST_TEST_TRAIT_SAME(typename inherit<F, X>::result_type, typename X::result_type); |
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| 38 | } |
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| 39 | |
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| 40 | int main() |
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| 41 | { |
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| 42 | test<X>( boost::protect( f: X() ) ); |
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| 43 | |
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| 44 | #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && !defined(BOOST_NO_CXX11_DECLTYPE) && !(defined(BOOST_GCC) && BOOST_GCC < 40600) |
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| 45 | |
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| 46 | test2( boost::protect( f: Y() ) ); |
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| 47 | |
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| 48 | #endif |
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| 49 | |
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| 50 | return boost::report_errors(); |
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| 51 | } |
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| 52 | |
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