| 1 | // Copyright (C) 2018 Tobias Loew |
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| 2 | // Use, modification and distribution is subject to the Boost Software |
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| 3 | // License, Version 1.0. (http://www.boost.org/LICENSE_1_0.txt) |
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| 4 | |
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| 5 | #include <boost/config.hpp> |
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| 6 | #include <boost/config/pragma_message.hpp> |
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| 7 | |
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| 8 | #if defined(BOOST_NO_CXX11_LAMBDAS) |
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| 9 | |
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| 10 | BOOST_PRAGMA_MESSAGE("Skipping test due to BOOST_NO_CXX11_LAMBDAS" ) |
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| 11 | int main() {} |
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| 12 | |
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| 13 | #elif defined(BOOST_NO_CXX11_AUTO_DECLARATIONS) |
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| 14 | |
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| 15 | BOOST_PRAGMA_MESSAGE("Skipping test due to BOOST_NO_CXX11_AUTO_DECLARATIONS" ) |
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| 16 | int main() {} |
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| 17 | |
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| 18 | #else |
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| 19 | |
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| 20 | #include <boost/typeof/typeof.hpp> |
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| 21 | #include BOOST_TYPEOF_INCREMENT_REGISTRATION_GROUP() |
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| 22 | |
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| 23 | namespace detail { |
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| 24 | template<class T> inline T& deref(T& r) { |
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| 25 | return r; |
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| 26 | } |
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| 27 | template<class T> |
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| 28 | struct wrapper { |
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| 29 | typedef T type; |
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| 30 | }; |
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| 31 | |
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| 32 | template<class T> wrapper<T> wrap(T&); |
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| 33 | }; |
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| 34 | |
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| 35 | BOOST_TYPEOF_REGISTER_TEMPLATE(::detail::wrapper, 1) |
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| 36 | |
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| 37 | void test_typeof_in_lambda() { |
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| 38 | // Visual Studio 2015 (BOOST_MSVC == 1900) had an internal compiler error with Boost 1.65 and 1.66 when using BOOST_SCOPE_EXIT inside a lambda |
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| 39 | // the error was due to a change of include in boost/typeof/typeof.hpp (<boost/typeof/decltype.hpp> instead of <boost/typeof/native.hpp>) |
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| 40 | // This test is an more or less minimal extract from the BOOST_SCOPE_EXIT macro expansions |
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| 41 | |
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| 42 | // worked also with VS 2015 in version 1.65/1.66 |
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| 43 | int n; |
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| 44 | typedef BOOST_TYPEOF(::detail::wrap(::detail::deref(n))) n_type_wrapped; |
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| 45 | typedef n_type_wrapped::type n_type; |
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| 46 | |
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| 47 | int test; |
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| 48 | |
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| 49 | auto check_property = [&n,&test]() { |
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| 50 | // internal compiler error with VS 2015 in version 1.65/1.66 |
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| 51 | // minimal extract from |
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| 52 | //BOOST_SCOPE_EXIT(test) { |
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| 53 | // test = 42; |
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| 54 | //}BOOST_SCOPE_EXIT_END |
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| 55 | |
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| 56 | // this compiles always (as long as the one before outside the lambda has the same name) |
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| 57 | typedef BOOST_TYPEOF(::detail::wrap(::detail::deref(n))) n_type_wrapped; |
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| 58 | typedef n_type_wrapped::type n_type; |
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| 59 | |
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| 60 | // this fails with internal compiler error with VS 2015 in version 1.65/1.66 |
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| 61 | typedef BOOST_TYPEOF(::detail::wrap(::detail::deref(test))) test_type_wrapped; |
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| 62 | typedef test_type_wrapped::type test_type; |
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| 63 | |
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| 64 | }; |
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| 65 | |
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| 66 | } |
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| 67 | |
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| 68 | int main() { |
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| 69 | test_typeof_in_lambda(); |
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| 70 | |
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| 71 | return 0; |
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| 72 | } |
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| 73 | |
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| 74 | #endif |
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| 75 | |
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