type_traits (common_type): Implement LWG 2141.
2012-10-24 Daniel Krugler <daniel.kruegler@gmail.com> * include/std/type_traits (common_type): Implement LWG 2141. * testsuite/20_util/duration/requirements/sfinae_friendly_1.cc: Update. * testsuite/20_util/common_type/requirements/typedefs-1.cc: Likewise. * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc: Likewise. * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc: Likewise. * testsuite/20_util/common_type/requirements/typedefs-2.cc: Likewise. From-SVN: r192780
This commit is contained in:
Daniel Kruegler
Paolo Carlini
parent
6e5769ce15
commit
6c5173c05f
@ -1,3 +1,15 @@
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2012-10-24 Daniel Krugler <daniel.kruegler@gmail.com>
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* include/std/type_traits (common_type): Implement LWG 2141.
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* testsuite/20_util/duration/requirements/sfinae_friendly_1.cc:
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Update.
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* testsuite/20_util/common_type/requirements/typedefs-1.cc: Likewise.
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* testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
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Likewise.
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* testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
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Likewise.
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* testsuite/20_util/common_type/requirements/typedefs-2.cc: Likewise.
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2012-10-24 Haakan Younes <hyounes@google.com>
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Paolo Carlini <paolo.carlini@oracle.com>
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@ -247,7 +259,7 @@
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* testsuite/23_containers/bitset/45713.cc: Skip for avr*-*-*
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cris*-*-* h8300*-*-* mcore*-*-* moxie*-*-*.
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2012-10-11 Daniel Krugler <daniel.kruegler@googlemail.com>
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2012-10-11 Daniel Krugler <daniel.kruegler@gmail.com>
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* testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
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Update / extend.
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@ -289,7 +301,7 @@
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* testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
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Adjust.
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2012-10-09 Daniel Krugler <daniel.kruegler@googlemail.com>
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2012-10-09 Daniel Krugler <daniel.kruegler@gmail.com>
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* include/std/type_traits (common_time): Provide "SFINAE-friendly"
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implementation.
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@ -466,7 +478,7 @@
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* include/ext/random.tcc (rice_distribution<>::__generate_impl):
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Likewise.
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2012-10-01 Daniel Krugler <daniel.kruegler@googlemail.com>
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2012-10-01 Daniel Krugler <daniel.kruegler@gmail.com>
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* include/std/type_traits (result_of): Provide "SFINAE-friendly"
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(see N3436) implementation.
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@ -1810,7 +1822,7 @@
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PR libstdc++/52689
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* testsuite/17_intro/static.cc: New.
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2012-04-23 Daniel Krugler <daniel.kruegler@googlemail.com>
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2012-04-23 Daniel Krugler <daniel.kruegler@gmail.com>
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* include/std/type_traits (is_nothrow_destructible): Implement.
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(is_destructible): Implement LWG 2049.
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@ -1792,9 +1792,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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struct __do_common_type_impl
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{
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template<typename _Tp, typename _Up>
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static __success_type<decltype
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static __success_type<typename decay<decltype
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(true ? std::declval<_Tp>()
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: std::declval<_Up>())> _S_test(int);
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: std::declval<_Up>())>::type> _S_test(int);
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template<typename, typename>
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static __failure_type _S_test(...);
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@ -1835,7 +1835,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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template<typename _Tp>
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struct common_type<_Tp>
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{ typedef _Tp type; };
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{ typedef typename decay<_Tp>::type type; };
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template<typename _Tp, typename _Up>
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struct common_type<_Tp, _Up>
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@ -163,23 +163,19 @@ namespace std {
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};
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}
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#ifdef HAS_53000_FIXED
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static_assert(is_type<std::common_type<int, int>, int&&>(), "");
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static_assert(is_type<std::common_type<ScEn, ScEn>, ScEn&&>(), "");
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static_assert(is_type<std::common_type<UnscEn, UnscEn>, UnscEn&&>(), "");
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#endif
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static_assert(is_type<std::common_type<int, int>, int>(), "");
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static_assert(is_type<std::common_type<ScEn, ScEn>, ScEn>(), "");
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static_assert(is_type<std::common_type<UnscEn, UnscEn>, UnscEn>(), "");
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static_assert(is_type<std::common_type<UnscEn, int>, int>(), "");
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#ifdef HAS_53000_FIXED
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static_assert(is_type<std::common_type<int, int, int>, int&&>(), "");
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static_assert(is_type<std::common_type<int, int, int, int>, int&&>(), "");
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static_assert(is_type<std::common_type<int, int, int, int, int>, int&&>(), "");
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static_assert(is_type<std::common_type<S, S>, S&&>(), "");
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static_assert(is_type<std::common_type<const S, const S>, const S&&>(), "");
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static_assert(is_type<std::common_type<int, int, int>, int>(), "");
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static_assert(is_type<std::common_type<int, int, int, int>, int>(), "");
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static_assert(is_type<std::common_type<int, int, int, int, int>, int>(), "");
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static_assert(is_type<std::common_type<S, S>, S>(), "");
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static_assert(is_type<std::common_type<const S, const S>, S>(), "");
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static_assert(is_type<std::common_type<std::initializer_list<int>,
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std::initializer_list<int>>, std::initializer_list<int>&&>(), "");
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static_assert(is_type<std::common_type<B, D>, B&&>(), "");
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static_assert(is_type<std::common_type<D, B>, B&&>(), "");
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#endif
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std::initializer_list<int>>, std::initializer_list<int>>(), "");
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static_assert(is_type<std::common_type<B, D>, B>(), "");
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static_assert(is_type<std::common_type<D, B>, B>(), "");
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static_assert(is_type<std::common_type<F1, F2>, void*>(), "");
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static_assert(is_type<std::common_type<F2, F1>, void*>(), "");
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static_assert(is_type<std::common_type<G1, G2>, const volatile void*>(), "");
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@ -191,16 +187,12 @@ static_assert(is_type<std::common_type<void*, const volatile int*>,
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static_assert(is_type<std::common_type<void, void>, void>(), "");
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static_assert(is_type<std::common_type<const void, const void>, void>(), "");
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static_assert(is_type<std::common_type<int&, int&&>, int>(), "");
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static_assert(is_type<std::common_type<int&, int&>, int&>(), "");
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#ifdef HAS_53000_FIXED
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static_assert(is_type<std::common_type<int&&, int&&>, int&&>(), "");
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static_assert(is_type<std::common_type<int&&, const int&&>, const int&&>(), "");
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#endif
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static_assert(is_type<std::common_type<U&, const U&&>, const U>(), "");
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static_assert(is_type<std::common_type<U&, U&>, U&>(), "");
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#ifdef HAS_53000_FIXED
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static_assert(is_type<std::common_type<U&&, U&&>, U&&>(), "");
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#endif
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static_assert(is_type<std::common_type<int&, int&>, int>(), "");
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static_assert(is_type<std::common_type<int&&, int&&>, int>(), "");
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static_assert(is_type<std::common_type<int&&, const int&&>, int>(), "");
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static_assert(is_type<std::common_type<U&, const U&&>, U>(), "");
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static_assert(is_type<std::common_type<U&, U&>, U>(), "");
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static_assert(is_type<std::common_type<U&&, U&&>, U>(), "");
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static_assert(is_type<std::common_type<int B::*, int D::*>, int D::*>(), "");
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static_assert(is_type<std::common_type<int D::*, int B::*>, int D::*>(), "");
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static_assert(is_type<std::common_type<const int B::*, volatile int D::*>,
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@ -209,34 +201,28 @@ static_assert(is_type<std::common_type<int (B::*)(), int (D::*)()>,
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int (D::*)()>(), "");
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static_assert(is_type<std::common_type<int (B::*)() const, int (D::*)() const>,
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int (D::*)() const>(), "");
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#ifdef HAS_53000_FIXED
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static_assert(is_type<std::common_type<int[3], int[3]>, int(&&)[3]>(), "");
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#endif
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static_assert(is_type<std::common_type<int[3], int[3]>, int*>(), "");
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static_assert(is_type<std::common_type<int[1], const int[3]>,
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const int*>(), "");
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static_assert(is_type<std::common_type<void(), void()>, void(&)()>(), "");
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static_assert(is_type<std::common_type<void(&)(), void(&)()>, void(&)()>(), "");
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static_assert(is_type<std::common_type<void(), void()>, void(*)()>(), "");
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static_assert(is_type<std::common_type<void(&)(), void(&)()>, void(*)()>(), "");
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static_assert(is_type<std::common_type<void(&)(), void(&&)()>,
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void(&)()>(), "");
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void(*)()>(), "");
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static_assert(is_type<std::common_type<void(&&)(), void(&)()>,
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void(&)()>(), "");
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void(*)()>(), "");
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static_assert(is_type<std::common_type<void(&&)(), void(&&)()>,
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void(&)()>(), "");
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void(*)()>(), "");
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static_assert(is_type<std::common_type<ImplicitTo<int>, int>, int>(), "");
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#ifdef HAS_53000_FIXED
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static_assert(is_type<std::common_type<ImplicitTo<int>, ImplicitTo<int>>,
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ImplicitTo<int>&&>(), "");
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#endif
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ImplicitTo<int>>(), "");
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static_assert(is_type<std::common_type<ImplicitTo<int>, int,
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ImplicitTo<int>>, int>(), "");
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#ifdef HAS_53000_FIXED
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static_assert(is_type<std::common_type<ExplicitTo<int>, ExplicitTo<int>>,
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ExplicitTo<int>&&>(), "");
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ExplicitTo<int>>(), "");
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static_assert(is_type<std::common_type<decltype(lmd1), decltype(lmd1)>,
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decltype(lmd1)&&>(), "");
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#endif
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decltype(lmd1)>(), "");
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static_assert(is_type<std::common_type<decltype(lmd1)&, decltype(lmd1)&>,
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decltype(lmd1)&>(), "");
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decltype(lmd1)>(), "");
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static_assert(is_type<std::common_type<decltype(lmd1)&, decltype(lmd2)&>,
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void(*)(int, double)>(), "");
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static_assert(is_type<std::common_type<decltype(nullptr), void*>, void*>(), "");
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@ -251,9 +237,9 @@ static_assert(is_type<std::common_type<decltype(nullptr), int (B::*)() const>,
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int (B::*)() const>(), "");
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static_assert(is_type<std::common_type<decltype(nullptr), const int B::*>,
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const int B::*>(), "");
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static_assert(is_type<std::common_type<Abstract&, Abstract&>, Abstract&>(), "");
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static_assert(is_type<std::common_type<Ukn&, Ukn&>, Ukn&>(), "");
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static_assert(is_type<std::common_type<ImplicitTo<B&>, B&>, B&>(), "");
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static_assert(is_type<std::common_type<Abstract&, Abstract&>, Abstract>(), "");
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static_assert(is_type<std::common_type<Ukn&, Ukn&>, Ukn>(), "");
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static_assert(is_type<std::common_type<ImplicitTo<B&>, B&>, B>(), "");
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static_assert(is_type<std::common_type<ImplicitTo<B&>&, B&&>, B>(), "");
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static_assert(is_type<std::common_type<UConv1, const Abstract*&>,
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const Abstract*>(), "");
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@ -262,12 +248,12 @@ static_assert(is_type<std::common_type<UConv1&, UConv2&>, Abstract*>(), "");
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#ifdef HAS_53000_FIXED
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static_assert(is_type<std::common_type<Abstract&&, Abstract&&>,
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Abstract&&>(), "");
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Abstract>(), "");
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static_assert(is_type<std::common_type<const Abstract&&,
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volatile Abstract&&>, const volatile Abstract&&>(), "");
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static_assert(is_type<std::common_type<Ukn&&, Ukn&&>, Ukn&&>(), "");
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volatile Abstract&&>, Abstract>(), "");
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static_assert(is_type<std::common_type<Ukn&&, Ukn&&>, Ukn>(), "");
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static_assert(is_type<std::common_type<const Ukn&&, volatile Ukn&&>,
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const volatile Ukn&&>(), "");
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Ukn>(), "");
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#endif
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static_assert(is_type<std::common_type<X1, X2>, RX12>(), "");
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@ -337,14 +323,12 @@ void test(int i)
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auto local_lmd1 = [=](int, double) { return i + i; };
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auto local_lmd2 = [=](int, double) { return i - i; };
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#ifdef HAS_53000_FIXED
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static_assert(is_type<std::common_type<decltype(local_lmd1),
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decltype(local_lmd1)>, decltype(local_lmd1)&&>(), "");
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#endif
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decltype(local_lmd1)>, decltype(local_lmd1)>(), "");
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static_assert(is_type<std::common_type<decltype(local_lmd1)&,
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decltype(local_lmd1)>, decltype(local_lmd1)>(), "");
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static_assert(is_type<std::common_type<decltype(local_lmd1)&,
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decltype(local_lmd1)&>, decltype(local_lmd1)&>(), "");
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decltype(local_lmd1)&>, decltype(local_lmd1)>(), "");
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static_assert(!has_type<std::common_type<decltype(local_lmd1),
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decltype(lmd1)>>(), "");
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@ -24,12 +24,11 @@
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template<typename... Args>
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constexpr
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std::array<typename std::decay<typename std::common_type<Args...>::type>::type,
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std::array<typename std::common_type<Args...>::type,
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sizeof...(Args)>
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make_array(Args&&... args) // { dg-error "invalid use" }
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{
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typedef typename std::decay<typename std::common_type<Args...>::type>::type
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CT;
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typedef typename std::common_type<Args...>::type CT;
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return std::array<CT, sizeof...(Args)>{static_cast<CT>
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(std::forward<Args>(args))...};
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}
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@ -39,10 +38,26 @@ void test01()
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constexpr auto a1 = make_array(0);
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constexpr auto a2 = make_array(0, 1.2);
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constexpr auto a3 = make_array(5, true, 3.1415f, 'c');
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int i{};
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double d{1.2};
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float f{3.1415f};
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auto b1 = make_array(i);
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auto b2 = make_array(i, 1.2);
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auto b3 = make_array(i, d);
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auto b4 = make_array(0, d);
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auto b5 = make_array(i, true, f, 'c');
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static_assert(std::is_same<decltype(a1), const std::array<int, 1>>(), "");
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static_assert(std::is_same<decltype(a2), const std::array<double, 2>>(), "");
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static_assert(std::is_same<decltype(a3), const std::array<float, 4>>(), "");
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static_assert(std::is_same<decltype(b1), std::array<int, 1>>(), "");
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static_assert(std::is_same<decltype(b2), std::array<double, 2>>(), "");
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static_assert(std::is_same<decltype(b3), std::array<double, 2>>(), "");
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static_assert(std::is_same<decltype(b4), std::array<double, 2>>(), "");
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static_assert(std::is_same<decltype(b5), std::array<float, 4>>(), "");
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}
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void test02()
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@ -105,7 +105,7 @@ void test02()
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COMMON_TYPE_TEST_ALL_2(int, int, int, 1);
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COMMON_TYPE_TEST_ALL_2(int, double, double, 2);
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COMMON_TYPE_TEST_2(NO_CV, A, A, A, 3);
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COMMON_TYPE_TEST_2(const, A, A, const A, 4);
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COMMON_TYPE_TEST_2(const, A, A, A, 4);
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COMMON_TYPE_TEST_2(NO_CV, B, A, A, 5);
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}
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@ -1,7 +1,7 @@
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// { dg-options "-std=gnu++0x" }
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// 2009-11-12 Paolo Carlini <paolo.carlini@oracle.com>
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//
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// Copyright (C) 2009 Free Software Foundation, Inc.
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// Copyright (C) 2009-2012 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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@ -29,10 +29,9 @@ void test01()
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using std::is_same;
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VERIFY( (is_same<common_type<void>::type, void>::value) );
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VERIFY( (is_same<common_type<const void>::type, const void>::value) );
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VERIFY( (is_same<common_type<volatile void>::type, volatile void>::value) );
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VERIFY( (is_same<common_type<const volatile void>::type,
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const volatile void>::value) );
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VERIFY( (is_same<common_type<const void>::type, void>::value) );
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VERIFY( (is_same<common_type<volatile void>::type, void>::value) );
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VERIFY( (is_same<common_type<const volatile void>::type, void>::value) );
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VERIFY( (is_same<common_type<void, void>::type, void>::value) );
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VERIFY( (is_same<common_type<void, const void>::type, void>::value) );
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@ -21,9 +21,6 @@
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#include <type_traits>
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#include <chrono>
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//TODO: Uncomment this once gcc bug 53000 has been resolved:
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//#define HAS_53000_FIXED
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// Helper types:
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struct has_type_impl
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{
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@ -55,10 +52,8 @@ typedef std::chrono::duration<int, std::nano> din;
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typedef std::chrono::duration<double, std::nano> ddn;
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typedef std::chrono::duration<int, std::milli> dim;
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#ifdef HAS_53000_FIXED
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static_assert(is_type<std::common_type<din, din>, din&&>(), "");
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static_assert(is_type<std::common_type<din, din, din>, din&&>(), "");
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#endif
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static_assert(is_type<std::common_type<din, din>, din>(), "");
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static_assert(is_type<std::common_type<din, din, din>, din>(), "");
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static_assert(is_type<std::common_type<din, ddn>, ddn>(), "");
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static_assert(is_type<std::common_type<din, din, ddn>, ddn>(), "");
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