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ldionne opened this issue Aug 20, 2024 · 1 comment
Open

P2255R2: A type trait to detect reference binding to temporary #105180

ldionne opened this issue Aug 20, 2024 · 1 comment
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@Zingam @H-G-Hristov
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c++23 libc++ libc++ C++ Standard Library. Not GNU libstdc++. Not libc++abi. wg21 paper Issues representing the implementation of a WG21 paper

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@ldionne
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ldionne commented Aug 20, 2024

Link: https://wg21.link/P2255R2
@ldionne ldionne added c++23 libc++ libc++ C++ Standard Library. Not GNU libstdc++. Not libc++abi. wg21 paper Issues representing the implementation of a WG21 paper labels Aug 20, 2024
@H-G-Hristov
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H-G-Hristov commented Feb 24, 2025 •
edited by Zingam
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It looks like the required builtins have been implemented:

__reference_constructs_from_temporary added in https://reviews.llvm.org/D135341 / 8f3b0b4

__reference_converts_from_temporary added in #91199 / 2dbe89d

Issue: #114344

__has_builtin() issues fixed in 75611ca

@H-G-Hristov H-G-Hristov mentioned this issue Feb 25, 2025
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H-G-Hristov added a commit to H-G-Hristov/llvm-project that referenced this issue Feb 25, 2025
@H-G-Hristov
[libc++][type_traits] Implements "A type trait to detect reference bi…
6332519 
…nding to temporary"

Implements partially: P2255R2: A type trait to detect reference binding to temporary
llvm#105180

https://eel.is/c++draft/meta.type.synop
https://eel.is/c++draft/meta.unary.prop

Implented type traits:
- [x] `reference_constructs_from_temporary`
- [x] `reference_converts_from_temporary`
H-G-Hristov added a commit to H-G-Hristov/llvm-project that referenced this issue Feb 25, 2025
@H-G-Hristov
[libc++][type_traits] Implements "A type trait to detect reference bi…
ad6826c 
…nding to temporary"

Implements partially: P2255R2: A type trait to detect reference binding to temporary
llvm#105180

https://eel.is/c++draft/meta.type.synop
https://eel.is/c++draft/meta.unary.prop

Implented type traits:
- [x] `reference_constructs_from_temporary`
- [x] `reference_converts_from_temporary`
H-G-Hristov added a commit to H-G-Hristov/llvm-project that referenced this issue Feb 25, 2025
@H-G-Hristov
[libc++][type_traits] Implements "A type trait to detect reference bi…
a549475 
…nding to temporary"

Implements partially: P2255R2: A type trait to detect reference binding to temporary
llvm#105180

https://eel.is/c++draft/meta.type.synop
https://eel.is/c++draft/meta.unary.prop

Implented type traits:
- [x] `reference_constructs_from_temporary`
- [x] `reference_converts_from_temporary`
H-G-Hristov added a commit to H-G-Hristov/llvm-project that referenced this issue Feb 25, 2025
@H-G-Hristov
[libc++][type_traits] Implements "A type trait to detect reference bi…
b322e34 
…nding to temporary"

Implements partially: P2255R2: A type trait to detect reference binding to temporary
llvm#105180

https://eel.is/c++draft/meta.type.synop
https://eel.is/c++draft/meta.unary.prop

Implented type traits:
- [x] `reference_constructs_from_temporary`
- [x] `reference_converts_from_temporary`
H-G-Hristov added a commit to H-G-Hristov/llvm-project that referenced this issue Feb 25, 2025
@H-G-Hristov
[libc++][type_traits] Implements "A type trait to detect reference bi…
bf9e5d9 
…nding to temporary"

Implements partially: P2255R2: A type trait to detect reference binding to temporary
llvm#105180

https://eel.is/c++draft/meta.type.synop
https://eel.is/c++draft/meta.unary.prop

Implented type traits:
- [x] `reference_constructs_from_temporary`
- [x] `reference_converts_from_temporary`
H-G-Hristov added a commit to H-G-Hristov/llvm-project that referenced this issue Feb 25, 2025
@H-G-Hristov
[libc++][type_traits] Implements "A type trait to detect reference bi…
ab21883 
…nding to temporary"

Implements partially: P2255R2: A type trait to detect reference binding to temporary
llvm#105180

https://eel.is/c++draft/meta.type.synop
https://eel.is/c++draft/meta.unary.prop

Implented type traits:
- [x] `reference_constructs_from_temporary`
- [x] `reference_converts_from_temporary`
philnik777 pushed a commit that referenced this issue Mar 8, 2025
@H-G-Hristov @Zingam
[libc++][type_traits] Implements "A type trait to detect reference bi…
6d9dfd7 
…nding to temporary" (#128649)

Implements partially: [P2255R2: A type trait to detect reference binding
to temporary](https://wg21.link/P2255R2)
Issue: #105180

https://eel.is/c++draft/meta.type.synop
https://eel.is/c++draft/meta.unary.prop

Implented type traits:
- [x] `reference_constructs_from_temporary`
- [x] `reference_converts_from_temporary`

Closes #129049

Minor drive-by tweak to `std::is_implicit_lifetime` tests.

---------

Co-authored-by: Hristo Hristov <[email protected]>
llvm-sync bot pushed a commit to arm/arm-toolchain that referenced this issue Mar 8, 2025
@H-G-Hristov @Zingam @github-actions
Automerge: [libc++][type_traits] Implements "A type trait to detect r…
8226245 
…eference binding to temporary" (#128649)

Implements partially: [P2255R2: A type trait to detect reference binding
to temporary](https://wg21.link/P2255R2)
Issue: llvm/llvm-project#105180

https://eel.is/c++draft/meta.type.synop
https://eel.is/c++draft/meta.unary.prop

Implented type traits:
- [x] `reference_constructs_from_temporary`
- [x] `reference_converts_from_temporary`

Closes #129049

Minor drive-by tweak to `std::is_implicit_lifetime` tests.

---------

Co-authored-by: Hristo Hristov <[email protected]>
@Zingam Zingam self-assigned this Mar 16, 2025
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c++23 libc++ libc++ C++ Standard Library. Not GNU libstdc++. Not libc++abi. wg21 paper Issues representing the implementation of a WG21 paper
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