Skip to content

part deux: make the abi of __basic_any compatible between c++17 and c++20 #7405

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
ericniebler merged 1 commit into from
Jan 29, 2026
Merged

part deux: make the abi of __basic_any compatible between c++17 and c++20 #7405

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
39 changes: 20 additions & 19 deletions libcudacxx/include/cuda/__utility/__basic_any/semiregular.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -51,18 +51,21 @@ _CCCL_BEGIN_NAMESPACE_CUDA
//! semi-regular overrides
//!

//! @note We use `::cuda::std::enable_if_t` here instead of requires-clauses
//! to avoid ABI differences between C++17 and C++20 modes.

_CCCL_EXEC_CHECK_DISABLE
_CCCL_TEMPLATE(class _Tp)
_CCCL_REQUIRES(::cuda::std::movable<_Tp>)
_CCCL_PUBLIC_API auto __move_fn(_Tp& __src, void* __dst) noexcept -> void
template <class _Tp>
_CCCL_PUBLIC_API auto __move_fn(_Tp& __src, void* __dst) noexcept
-> ::cuda::std::enable_if_t<::cuda::std::movable<_Tp>, void>
{
::new (__dst) _Tp(static_cast<_Tp&&>(__src));
}

_CCCL_EXEC_CHECK_DISABLE
_CCCL_TEMPLATE(class _Tp)
_CCCL_REQUIRES(::cuda::std::movable<_Tp>)
[[nodiscard]] _CCCL_PUBLIC_API auto __try_move_fn(_Tp& __src, void* __dst, size_t __size, size_t __align) -> bool
template <class _Tp>
[[nodiscard]] _CCCL_PUBLIC_API auto __try_move_fn(_Tp& __src, void* __dst, size_t __size, size_t __align)
-> ::cuda::std::enable_if_t<::cuda::std::movable<_Tp>, bool>
{
if (::cuda::__is_small<_Tp>(__size, __align))
{
Expand All @@ -77,9 +80,9 @@ _CCCL_REQUIRES(::cuda::std::movable<_Tp>)
}

_CCCL_EXEC_CHECK_DISABLE
_CCCL_TEMPLATE(class _Tp)
_CCCL_REQUIRES(::cuda::std::copyable<_Tp>)
[[nodiscard]] _CCCL_PUBLIC_API auto __copy_fn(_Tp const& __src, void* __dst, size_t __size, size_t __align) -> bool
template <class _Tp>
[[nodiscard]] _CCCL_PUBLIC_API auto __copy_fn(_Tp const& __src, void* __dst, size_t __size, size_t __align)
-> ::cuda::std::enable_if_t<::cuda::std::copyable<_Tp>, bool>
{
if (::cuda::__is_small<_Tp>(__size, __align))
{
Expand All @@ -94,10 +97,10 @@ _CCCL_REQUIRES(::cuda::std::copyable<_Tp>)
}

_CCCL_EXEC_CHECK_DISABLE
_CCCL_TEMPLATE(class _Tp)
_CCCL_REQUIRES(::cuda::std::equality_comparable<_Tp>)
template <class _Tp>
[[nodiscard]] _CCCL_PUBLIC_API auto
__equal_fn(_Tp const& __self, ::cuda::std::__type_info_ref __type, void const* __other) -> bool
__equal_fn(_Tp const& __self, ::cuda::std::__type_info_ref __type, void const* __other)
-> ::cuda::std::enable_if_t<::cuda::std::equality_comparable<_Tp>, bool>
{
if (_CCCL_TYPEID(_Tp) == __type)
{
Expand All @@ -107,9 +110,9 @@ __equal_fn(_Tp const& __self, ::cuda::std::__type_info_ref __type, void const* _
}

_CCCL_EXEC_CHECK_DISABLE
_CCCL_TEMPLATE(class _From, class _To)
_CCCL_REQUIRES(::cuda::std::convertible_to<_From, _To>)
[[nodiscard]] _CCCL_PUBLIC_API _To __conversion_fn(::cuda::std::type_identity_t<_From> __self)
template <class _From, class _To>
[[nodiscard]] _CCCL_PUBLIC_API auto __conversion_fn(::cuda::std::type_identity_t<_From> __self)
-> ::cuda::std::enable_if_t<::cuda::std::convertible_to<_From, _To>, _To>
{
return static_cast<_To>(static_cast<_From&&>(__self));
}
Expand All @@ -120,8 +123,7 @@ _CCCL_REQUIRES(::cuda::std::convertible_to<_From, _To>)
template <class...>
struct __imovable : __basic_interface<__imovable>
{
_CCCL_TEMPLATE(class _Tp)
_CCCL_REQUIRES(::cuda::std::movable<_Tp>)
template <class _Tp>
using overrides _CCCL_NODEBUG_ALIAS = __overrides_for<_Tp, &::cuda::__try_move_fn<_Tp>, &::cuda::__move_fn<_Tp>>;

_CCCL_API auto __move_to(void* __pv) noexcept -> void
Expand All @@ -138,8 +140,7 @@ struct __imovable : __basic_interface<__imovable>
template <class...>
struct __icopyable : __basic_interface<__icopyable, __extends<__imovable<>>>
{
_CCCL_TEMPLATE(class _Tp)
_CCCL_REQUIRES(::cuda::std::copyable<_Tp>)
template <class _Tp>
using overrides _CCCL_NODEBUG_ALIAS = __overrides_for<_Tp, &::cuda::__copy_fn<_Tp>>;

[[nodiscard]] _CCCL_API auto __copy_to(void* __pv, size_t __size, size_t __align) const -> bool
Expand Down
Loading