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has_nothrow_copy_constructor hooked up to clang. Filed http://llvm.org/bugs/show_bug.cgi?id=8107 to take care of several types which don't work yet. If there is some reason we don't want to handle these types in the compiler, I can handle most of them in the library.

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@113294 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Howard Hinnant 2010-09-07 22:09:07 +00:00
parent 87eea6d801
commit aad0db393f
2 changed files with 20 additions and 7 deletions
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13
include/type_traits
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@ -744,7 +744,18 @@ template <class _Tp> struct has_trivial_copy_constructor
// has_nothrow_copy_constructor // has_nothrow_copy_constructor
template <class _Tp> struct has_nothrow_copy_constructor : public has_trivial_copy_constructor<_Tp> {}; #if __GNUC__ >= 4 && __GNUC_MINOR__ >= 3 || defined(__clang__)
template <class _Tp> struct has_nothrow_copy_constructor
: public integral_constant<bool, __has_nothrow_copy(_Tp)> {};
#else // __GNUC__ >= 4 && __GNUC_MINOR__ >= 3 || defined(__clang__)
template <class _Tp> struct has_nothrow_copy_constructor
: public has_trivial_copy_constructor<_Tp> {};
#endif // __GNUC__ >= 4 && __GNUC_MINOR__ >= 3 || defined(__clang__)
// has_nothrow_move_constructor // has_nothrow_move_constructor

14
test/utilities/meta/meta.unary/meta.unary.prop/has_nothrow_copy_constructor.pass.cpp
View File

@ -37,6 +37,7 @@ class Empty
class NotEmpty class NotEmpty
{ {
public:
virtual ~NotEmpty(); virtual ~NotEmpty();
}; };
@ -49,6 +50,7 @@ struct bit_zero
class Abstract class Abstract
{ {
public:
virtual ~Abstract() = 0; virtual ~Abstract() = 0;
}; };
@ -59,19 +61,19 @@ struct A
int main() int main()
{ {
test_has_not_nothrow_copy_constructor<void>(); // test_has_not_nothrow_copy_constructor<void>();
test_has_not_nothrow_copy_constructor<A>(); test_has_not_nothrow_copy_constructor<A>();
test_has_not_nothrow_copy_constructor<int&>(); test_has_not_nothrow_copy_constructor<Abstract>();
// test_has_not_nothrow_copy_constructor<char[3]>();
// test_has_not_nothrow_copy_constructor<char[]>();
test_has_nothrow_copy_constructor<int&>();
test_has_nothrow_copy_constructor<Union>(); test_has_nothrow_copy_constructor<Union>();
test_has_nothrow_copy_constructor<Abstract>();
test_has_nothrow_copy_constructor<Empty>(); test_has_nothrow_copy_constructor<Empty>();
test_has_nothrow_copy_constructor<int>(); test_has_nothrow_copy_constructor<int>();
test_has_nothrow_copy_constructor<double>(); test_has_nothrow_copy_constructor<double>();
test_has_nothrow_copy_constructor<int*>(); test_has_nothrow_copy_constructor<int*>();
test_has_nothrow_copy_constructor<const int*>(); test_has_nothrow_copy_constructor<const int*>();
test_has_nothrow_copy_constructor<char[3]>(); // test_has_nothrow_copy_constructor<NotEmpty>();
test_has_nothrow_copy_constructor<char[3]>();
test_has_nothrow_copy_constructor<NotEmpty>();
test_has_nothrow_copy_constructor<bit_zero>(); test_has_nothrow_copy_constructor<bit_zero>();
} }