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has_trivial_copy_constructor hooked up to clang. Filed http://llvm.org/bugs/show_bug.cgi?id=8105 to take care of void, arrays of incomplete bounds and complete bounds which don't work yet. If there is some reason we don't want to handle these types in the compiler, I can handle them in the library. 

llvm-svn: 113270
This commit is contained in:
Howard Hinnant 2010-09-07 20:31:18 +00:00
parent bc9eaef24c
commit 01fd31000b
3 changed files with 21 additions and 8 deletions
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3
libcxx/include/__config
View File

@ -88,7 +88,10 @@
#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
#ifndef __GXX_EXPERIMENTAL_CXX0X__
#define _LIBCPP_HAS_NO_UNICODE_CHARS
#endif
#if !(__has_feature(cxx_exceptions))
#define _LIBCPP_NO_EXCEPTIONS

14
libcxx/include/type_traits
View File

@ -728,11 +728,19 @@ template <class _Tp> struct has_nothrow_default_constructor
// has_trivial_copy_constructor
template <class _Tp> struct __has_trivial_copy_constructor : public integral_constant<bool, is_scalar<_Tp>::value ||
is_reference<_Tp>::value> {};
#if __GNUC__ >= 4 && __GNUC_MINOR__ >= 3 || defined(__clang__)
template <class _Tp> struct has_trivial_copy_constructor
: public __has_trivial_copy_constructor<typename remove_all_extents<_Tp>::type> {};
: public integral_constant<bool, __has_trivial_copy(_Tp)> {};
#else // __GNUC__ >= 4 && __GNUC_MINOR__ >= 3 || defined(__clang__)
template <class _Tp> struct has_trivial_copy_constructor
: public integral_constant<bool, is_scalar<_Tp>::value ||
is_reference<_Tp>::value> {};
#endif // __GNUC__ >= 4 && __GNUC_MINOR__ >= 3 || defined(__clang__)
// has_nothrow_copy_constructor

12
libcxx/test/utilities/meta/meta.unary/meta.unary.prop/has_trivial_copy_constructor.pass.cpp
View File

@ -37,6 +37,7 @@ class Empty
class NotEmpty
{
public:
virtual ~NotEmpty();
};
@ -49,6 +50,7 @@ struct bit_zero
class Abstract
{
public:
virtual ~Abstract() = 0;
};
@ -61,17 +63,17 @@ int main()
{
test_has_not_trivial_copy_constructor<void>();
test_has_not_trivial_copy_constructor<A>();
test_has_not_trivial_copy_constructor<int&>();
test_has_not_trivial_copy_constructor<char[3]>();
test_has_not_trivial_copy_constructor<char[]>();
test_has_not_trivial_copy_constructor<Abstract>();
test_has_not_trivial_copy_constructor<NotEmpty>();
test_has_trivial_copy_constructor<int&>();
test_has_trivial_copy_constructor<Union>();
test_has_trivial_copy_constructor<Abstract>();
test_has_trivial_copy_constructor<Empty>();
test_has_trivial_copy_constructor<int>();
test_has_trivial_copy_constructor<double>();
test_has_trivial_copy_constructor<int*>();
test_has_trivial_copy_constructor<const int*>();
test_has_trivial_copy_constructor<char[3]>();
test_has_trivial_copy_constructor<char[3]>();
test_has_trivial_copy_constructor<NotEmpty>();
test_has_trivial_copy_constructor<bit_zero>();
}