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Squash-merge branch feature/pull-11

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Peter Dimov 2018-01-13 20:46:25 +02:00
parent 0047815f4a
commit 080f05ea46
2 changed files with 76 additions and 1 deletions
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3
include/boost/typeof/typeof.hpp
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@ -14,8 +14,9 @@
#endif
#include <boost/config.hpp>
#include <boost/config/workaround.hpp>
#if !defined(BOOST_NO_CXX11_DECLTYPE) && !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES) && !defined(BOOST_TYPEOF_EMULATION)
#if !BOOST_WORKAROUND(BOOST_MSVC, <= 1900) && !defined(BOOST_NO_CXX11_DECLTYPE) && !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES) && !defined(BOOST_TYPEOF_EMULATION)
# define BOOST_TYPEOF_DECLTYPE
# ifndef BOOST_TYPEOF_NATIVE
# define BOOST_TYPEOF_NATIVE

74
test/msvc_typeof_in_lambda.cpp Normal file
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@ -0,0 +1,74 @@
// Copyright (C) 2018 Tobias Loew
// Use, modification and distribution is subject to the Boost Software
// License, Version 1.0. (http://www.boost.org/LICENSE_1_0.txt)
#include <boost/config.hpp>
#include <boost/config/pragma_message.hpp>
#if defined(BOOST_NO_CXX11_LAMBDAS)
BOOST_PRAGMA_MESSAGE("Skipping test due to BOOST_NO_CXX11_LAMBDAS")
int main() {}
#elif defined(BOOST_NO_CXX11_AUTO_DECLARATIONS)
BOOST_PRAGMA_MESSAGE("Skipping test due to BOOST_NO_CXX11_AUTO_DECLARATIONS")
int main() {}
#else
#include <boost/typeof/typeof.hpp>
#include BOOST_TYPEOF_INCREMENT_REGISTRATION_GROUP()
namespace detail {
template<class T> inline T& deref(T& r) {
return r;
}
template<class T>
struct wrapper {
typedef T type;
};
template<class T> wrapper<T> wrap(T&);
};
BOOST_TYPEOF_REGISTER_TEMPLATE(::detail::wrapper, 1)
void test_typeof_in_lambda() {
// 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
// the error was due to a change of include in boost/typeof/typeof.hpp (<boost/typeof/decltype.hpp> instead of <boost/typeof/native.hpp>)
// This test is an more or less minimal extract from the BOOST_SCOPE_EXIT macro expansions
// worked also with VS 2015 in version 1.65/1.66
int n;
typedef BOOST_TYPEOF(::detail::wrap(::detail::deref(n))) n_type_wrapped;
typedef n_type_wrapped::type n_type;
int test;
auto check_property = [&n,&test]() {
// internal compiler error with VS 2015 in version 1.65/1.66
// minimal extract from
//BOOST_SCOPE_EXIT(test) {
// test = 42;
//}BOOST_SCOPE_EXIT_END
// this compiles always (as long as the one before outside the lambda has the same name)
typedef BOOST_TYPEOF(::detail::wrap(::detail::deref(n))) n_type_wrapped;
typedef n_type_wrapped::type n_type;
// this fails with internal compiler error with VS 2015 in version 1.65/1.66
typedef BOOST_TYPEOF(::detail::wrap(::detail::deref(test))) test_type_wrapped;
typedef test_type_wrapped::type test_type;
};
}
int main() {
test_typeof_in_lambda();
return 0;
}
#endif