LineageOS/android_external_libcxx
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Implement LWG2784, and mark 2786, 2795, 2804, 2812, 2826, 2834, 2837 and 2838 as complete - since we do them already

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@297752 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2017-03-14 17:08:47 +00:00
parent dd1f05915f
commit abba685fcd
3 changed files with 51 additions and 16 deletions
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16
include/exception
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@@ -248,12 +248,17 @@ throw_with_nested (_Tp& __t, typename enable_if<
#endif
}
template <class _From, class _To>
struct __can_dynamic_cast : public _LIBCPP_BOOL_CONSTANT(
is_polymorphic<_From>::value &&
(!is_base_of<_To, _From>::value ||
is_convertible<const _From*, const _To*>::value)) {};
template <class _Ep>
inline _LIBCPP_INLINE_VISIBILITY
void
rethrow_if_nested(const _Ep& __e, typename enable_if<
is_polymorphic<_Ep>::value
>::type* = 0)
rethrow_if_nested(const _Ep& __e,
typename enable_if< __can_dynamic_cast<_Ep, nested_exception>::value>::type* = 0)
{
const nested_exception* __nep = dynamic_cast<const nested_exception*>(_VSTD::addressof(__e));
if (__nep)
@@ -263,9 +268,8 @@ rethrow_if_nested(const _Ep& __e, typename enable_if<
template <class _Ep>
inline _LIBCPP_INLINE_VISIBILITY
void
rethrow_if_nested(const _Ep&, typename enable_if<
!is_polymorphic<_Ep>::value
>::type* = 0)
rethrow_if_nested(const _Ep&,
typename enable_if<!__can_dynamic_cast<_Ep, nested_exception>::value>::type* = 0)
{
}