The lambda is considered to be TU-local entity, use a named function
instead.
libstdc++-v3/ChangeLog:
* include/std/ranges (__func_handle::__select): Named function
extracted from local lambda.
(__detail::__func_handle_t): Define using __func_handle::__select.
---
Tested on x86_64-linux. OK for trunk?
libstdc++-v3/include/std/ranges | 33 +++++++++++++++++++--------------
1 file changed, 19 insertions(+), 14 deletions(-)
diff --git a/libstdc++-v3/include/std/ranges b/libstdc++-v3/include/std/ranges
index 7c5ac931e31..a756f1ef3db 100644
--- a/libstdc++-v3/include/std/ranges
+++ b/libstdc++-v3/include/std/ranges
@@ -448,23 +448,28 @@ namespace ranges
noexcept(noexcept(_Fn::operator()(__iters[iter_difference_t<_Iters>(__n)]...)))
{ return
_Fn::operator()(__iters[iter_difference_t<_Iters>(__n)]...); }
};
+
+ template<typename _Fn, typename... _Iters>
+ constexpr auto
+ __select()
+ {
+ using _Fd = remove_cv_t<_Fn>;
+ if constexpr (is_member_pointer_v<_Fd>)
+ return __func_handle::_InplaceMemPtr<_Fd>();
+ else if constexpr (is_function_v<remove_pointer_t<_Fd>>)
+ return __func_handle::_Inplace<_Fd>();
+ else if constexpr (__is_std_op_wrapper<_Fd>)
+ return __func_handle::_Inplace<_Fd>();
+ else if constexpr (requires (const _Iters&... __iters)
+ { _Fd::operator()(*__iters...); })
+ return __func_handle::_StaticCall<_Fd>();
+ else
+ return __func_handle::_ViaPointer<_Fn>();
+ };
} // __func_handle
template<typename _Fn, typename... _Iters>
- using __func_handle_t = decltype([] {
- using _Fd = remove_cv_t<_Fn>;
- if constexpr (is_member_pointer_v<_Fd>)
- return __func_handle::_InplaceMemPtr<_Fd>();
- else if constexpr (is_function_v<remove_pointer_t<_Fd>>)
- return __func_handle::_Inplace<_Fd>();
- else if constexpr (__is_std_op_wrapper<_Fd>)
- return __func_handle::_Inplace<_Fd>();
- else if constexpr (requires (const _Iters&... __iters)
- { _Fd::operator()(*__iters...); })
- return __func_handle::_StaticCall<_Fd>();
- else
- return __func_handle::_ViaPointer<_Fn>();
- }());
+ using __func_handle_t = decltype(__func_handle::__select<_Fn,
_Iters...>());
} // namespace __detail
/// A view that contains exactly one element.
--
2.51.1
