<type_traits>: Partially unblock P0466R5 for Clang
#5621
Merged
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This comment was marked as resolved.
This comment was marked as resolved.
This comment was marked as resolved.
This comment was marked as resolved.
StephanTLavavej
approved these changes
Oct 3, 2025
|
I'm mirroring this to the MSVC-internal repo - please notify me if any further changes are pushed. |
|
Thanks for extending these type traits to every corner of the known universe! 🧑🚀 🛰️ 🚀 |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
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.