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Commit fe4e4e3b by Paolo Carlini Committed by Paolo Carlini
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type_traits (__do_common_type_impl): Revert for now LWG 2141-related change. 

2012-10-10  Paolo Carlini  <paolo.carlini@oracle.com>

	* include/std/type_traits (__do_common_type_impl): Revert for now
	LWG 2141-related change.
	* testsuite/20_util/common_type/requirements/typedefs-1.cc: Likewise.
	* testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
	Adjust.

From-SVN: r192308
parent a4a8bca9
Showing with 26 additions and 18 deletions
libstdc++-v3/ChangeLog
2012-10-10 Paolo Carlini <paolo.carlini@oracle.com>
* include/std/type_traits (__do_common_type_impl): Revert for now
LWG 2141-related change.
* testsuite/20_util/common_type/requirements/typedefs-1.cc: Likewise.
* testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
Adjust.
2012-10-09 Daniel Krugler <daniel.kruegler@googlemail.com>
* include/std/type_traits (common_time): Provide "SFINAE-friendly"
......
libstdc++-v3/include/std/type_traits
......@@ -1792,9 +1792,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
struct __do_common_type_impl
{
template<typename _Tp, typename _Up>
static __success_type<typename decay<
decltype(true ? std::declval<_Tp>() : std::declval<_Up>())
>::type> _S_test(int);
static __success_type<decltype
(true ? std::declval<_Tp>()
: std::declval<_Up>())> _S_test(int);
template<typename, typename>
static __failure_type _S_test(...);
......
libstdc++-v3/testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc
......@@ -172,7 +172,7 @@ static_assert(is_type<std::common_type<int, int, int>, int>(), "");
static_assert(is_type<std::common_type<int, int, int, int>, int>(), "");
static_assert(is_type<std::common_type<int, int, int, int, int>, int>(), "");
static_assert(is_type<std::common_type<S, S>, S>(), "");
static_assert(is_type<std::common_type<const S, const S>, S>(), "");
static_assert(is_type<std::common_type<const S, const S>, const S>(), "");
static_assert(is_type<std::common_type<std::initializer_list<int>,
std::initializer_list<int>>, std::initializer_list<int>>(), "");
static_assert(is_type<std::common_type<B, D>, B>(), "");
......@@ -188,10 +188,10 @@ static_assert(is_type<std::common_type<void*, const volatile int*>,
static_assert(is_type<std::common_type<void, void>, void>(), "");
static_assert(is_type<std::common_type<const void, const void>, void>(), "");
static_assert(is_type<std::common_type<int&, int&&>, int>(), "");
static_assert(is_type<std::common_type<int&, int&>, int>(), "");
static_assert(is_type<std::common_type<int&, int&>, int&>(), "");
static_assert(is_type<std::common_type<int&&, int&&>, int>(), "");
static_assert(is_type<std::common_type<U&, const U&&>, U>(), "");
static_assert(is_type<std::common_type<U&, U&>, U>(), "");
static_assert(is_type<std::common_type<U&, const U&&>, const U>(), "");
static_assert(is_type<std::common_type<U&, U&>, U&>(), "");
static_assert(is_type<std::common_type<U&&, U&&>, U>(), "");
static_assert(is_type<std::common_type<int B::*, int D::*>, int D::*>(), "");
static_assert(is_type<std::common_type<int D::*, int B::*>, int D::*>(), "");
......@@ -204,14 +204,14 @@ static_assert(is_type<std::common_type<int (B::*)() const, int (D::*)() const>,
static_assert(is_type<std::common_type<int[3], int[3]>, int*>(), "");
static_assert(is_type<std::common_type<int[1], const int[3]>,
const int*>(), "");
static_assert(is_type<std::common_type<void(), void()>, void(*)()>(), "");
static_assert(is_type<std::common_type<void(&)(), void(&)()>, void(*)()>(), "");
static_assert(is_type<std::common_type<void(), void()>, void(&)()>(), "");
static_assert(is_type<std::common_type<void(&)(), void(&)()>, void(&)()>(), "");
static_assert(is_type<std::common_type<void(&)(), void(&&)()>,
void(*)()>(), "");
void(&)()>(), "");
static_assert(is_type<std::common_type<void(&&)(), void(&)()>,
void(*)()>(), "");
void(&)()>(), "");
static_assert(is_type<std::common_type<void(&&)(), void(&&)()>,
void(*)()>(), "");
void(&)()>(), "");
static_assert(is_type<std::common_type<ImplicitTo<int>, int>, int>(), "");
static_assert(is_type<std::common_type<ImplicitTo<int>, ImplicitTo<int>>,
ImplicitTo<int>>(), "");
......@@ -222,7 +222,7 @@ static_assert(is_type<std::common_type<ExplicitTo<int>, ExplicitTo<int>>,
static_assert(is_type<std::common_type<decltype(lmd1), decltype(lmd1)>,
decltype(lmd1)>(), "");
static_assert(is_type<std::common_type<decltype(lmd1)&, decltype(lmd1)&>,
decltype(lmd1)>(), "");
decltype(lmd1)&>(), "");
static_assert(is_type<std::common_type<decltype(lmd1)&, decltype(lmd2)&>,
void(*)(int, double)>(), "");
static_assert(is_type<std::common_type<decltype(nullptr), void*>, void*>(), "");
......@@ -237,9 +237,9 @@ static_assert(is_type<std::common_type<decltype(nullptr), int (B::*)() const>,
int (B::*)() const>(), "");
static_assert(is_type<std::common_type<decltype(nullptr), const int B::*>,
const int B::*>(), "");
static_assert(is_type<std::common_type<Abstract&, Abstract&>, Abstract>(), "");
static_assert(is_type<std::common_type<Ukn&, Ukn&>, Ukn>(), "");
static_assert(is_type<std::common_type<ImplicitTo<B&>, B&>, B>(), "");
static_assert(is_type<std::common_type<Abstract&, Abstract&>, Abstract&>(), "");
static_assert(is_type<std::common_type<Ukn&, Ukn&>, Ukn&>(), "");
static_assert(is_type<std::common_type<ImplicitTo<B&>, B&>, B&>(), "");
static_assert(is_type<std::common_type<ImplicitTo<B&>&, B&&>, B>(), "");
static_assert(is_type<std::common_type<UConv1, const Abstract*&>,
const Abstract*>(), "");
......@@ -328,7 +328,7 @@ void test(int i)
static_assert(is_type<std::common_type<decltype(local_lmd1)&,
decltype(local_lmd1)>, decltype(local_lmd1)>(), "");
static_assert(is_type<std::common_type<decltype(local_lmd1)&,
decltype(local_lmd1)&>, decltype(local_lmd1)>(), "");
decltype(local_lmd1)&>, decltype(local_lmd1)&>(), "");
static_assert(!has_type<std::common_type<decltype(local_lmd1),
decltype(lmd1)>>(), "");
......
libstdc++-v3/testsuite/20_util/common_type/requirements/typedefs-1.cc
......@@ -105,7 +105,7 @@ void test02()
COMMON_TYPE_TEST_ALL_2(int, int, int, 1);
COMMON_TYPE_TEST_ALL_2(int, double, double, 2);
COMMON_TYPE_TEST_2(NO_CV, A, A, A, 3);
COMMON_TYPE_TEST_2(const, A, A, A, 4);
COMMON_TYPE_TEST_2(const, A, A, const A, 4);
COMMON_TYPE_TEST_2(NO_CV, B, A, A, 5);
}
......
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