<type_traits>: Partially unblock P0466R5 for Clang#5621
Merged
StephanTLavavej merged 6 commits intomicrosoft:mainfrom Oct 4, 2025
Merged
<type_traits>: Partially unblock P0466R5 for Clang#5621StephanTLavavej merged 6 commits intomicrosoft:mainfrom
<type_traits>: Partially unblock P0466R5 for Clang#5621StephanTLavavej merged 6 commits intomicrosoft:mainfrom
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StephanTLavavej
approved these changes
Oct 3, 2025
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I'm mirroring this to the MSVC-internal repo - please notify me if any further changes are pushed. |
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Thanks for extending these type traits to every corner of the known universe! 🧑🚀 🛰️ 🚀 |
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Intrinsics
__is_layout_compatibleand__is_pointer_interconvertible_base_ofare implemented in Clang 19 (LLVM-81506, LLVM-88473), so this PR unblocks the corresponding standard library components for Clang.Unfortunately, according to WG21-P0466R5,
__cpp_lib_is_layout_compatiblecoversis_layout_compatible(_v)and__is_corresponding_member, and__cpp_lib_is_pointer_interconvertiblecoversis_pointer_interconvertible_base_of(_v)andis_pointer_interconvertible_with_class,so no feature-test macro should be unblocked for Clang at this moment.
Also adds workaround for LLVM-135273 and RWC, and specially handles EDG for IntelliSense with LLVM toolset.