The feature is applied as DR instead of a normal paper. MSVC STL and
libstdc++ will do the same.
Implements
- P2510R3 Formatting pointers
Depends on D153192
Reviewed By: #libc, ldionne
Differential Revision: https://reviews.llvm.org/D153195
We use 17.0 instead of Clang 17 in our status tables pretty consistently,
but not universally. This ensures that we do it universally, for all
versions.
Differential Revision: https://reviews.llvm.org/D154461
Work on the missing chrono parts has started, but their operators will
be added in different patches. So split the remaining chrono part to one
entry per line and mark them in progress.
This commit implements layout_left in support of C++23 mdspan
(https://wg21.link/p0009). layout_left is a layout mapping policy
whose index mapping corresponds to the memory layout of Fortran arrays.
Thus the left most index has stride-1 access, and the right most index
is associated with the largest stride.
Co-authored-by: Damien L-G <dalg24@gmail.com>
Differential Revision: https://reviews.llvm.org/D153783
This commit implements layout_right in support of C++23 mdspan
(https://wg21.link/p0009). layout_right is a layout mapping policy
whose index mapping corresponds to the memory layout of multidimensional
C-arrays, and is thus also referred to as the C-layout.
Co-authored-by: Damien L-G <dalg24@gmail.com>
Differential Revision: https://reviews.llvm.org/D151267
Since LIBCXX_ENABLE_FILESYSTEM now truly represents whether the
platform supports a filesystem (as opposed to whether the <filesystem>
library is provided), we can provide a few additional classes from
the <filesystem> library even when the platform does not have support
for a filesystem. For example, this allows performing path manipulations
using std::filesystem::path even on platforms where there is no actual
filesystem.
rdar://107061236
Differential Revision: https://reviews.llvm.org/D152382
Implement P2494R2 `Relaxing range adaptors to allow for move only types`
https://open-std.org/jtc1/sc22/wg21/docs/papers/2022/p2494r2.html#wording-ftm
According to the words in P2494R2, I haven't add new test for `drop_while_view`, `take_while_view` and `filter_view`, because these views has the requirement that the predicate is an `indirect_unary_predicate`, which requires that the predicate is `copy_constructible`, so they still can't accept move only types as predicate.
```
[P2483R0] also suggests future work to relax the requirements on the predicate types stored by standard views. This paper does not perform this relaxation, as the copy constructibility requirement is enshrined in the indirect callable concepts ([indirectcallable.indirectinvocable]). Thus, while this paper modifies the views that currently use copyable-box for user provided predicates, it only does so to apply the rename of the exposition-only type to movable-box; it does not change any of the constraints on those views. It does, however, relax the requirements on invocables accepted by the transform family of views, because those are not constrained using the indirect callable concepts.
```
Reviewed By: #libc, var-const
Differential Revision: https://reviews.llvm.org/D151629
type_traits is currently unable to include __type_traits/noexcept_move_assign_container.h, because it would cause several include cycles.
type_traits -> __type_traits/noexcept_move_assign_container.h -> __memory/allocator_traits.h -> __memory/construct_at.h -> new -> exception -> type_traits
type_traits -> __type_traits/noexcept_move_assign_container.h -> __memory/allocator_traits.h -> __memory/construct_at.h -> new -> type_traits
type_traits -> __type_traits/noexcept_move_assign_container.h -> __memory/allocator_traits.h -> limits -> type_traits
This is a problem for clang modules after the std mega module is broken up (D144322), because it becomes a module cycle which is a hard error.
Unconditionally remove the type_traits includes from limits and new in all versions, and also remove the exception include from new. (These are already removed in C++23.)
Reviewed By: ldionne, Mordante, #libc
Differential Revision: https://reviews.llvm.org/D153214
This change has a few additional effects:
- Abstract classes are now formattable.
- Volatile objects are no longer formattable.
Implements
- LWG3631 basic_format_arg(T&&) should use remove_cvref_t<T> throughout
- LWG3925 Concept formattable's definition is incorrect
Reviewed By: #libc, ldionne
Differential Revision: https://reviews.llvm.org/D152092
Changes to preconditions have no impact on the library.
Implements
- LWG3927 Unclear preconditions for operator[] for sequence containers
Reviewed By: #libc, philnik
Differential Revision: https://reviews.llvm.org/D153286
Like yocto, zepto, zetta, and yotta. The new prefixes quecto, ronto,
ronna, and quetta can't be implemented in a intmax_t. So their
implementation does nothing.
Implements
- P2734R0 Adding the new SI prefixes
Depends on D153192
Reviewed By: #libc, philnik
Differential Revision: https://reviews.llvm.org/D153200
This FTM was introduced in
P0553R4 Bit operations
Which has been implemented since libc++ 9.
This was noticed while working on D153192.
Reviewed By: #libc, philnik
Differential Revision: https://reviews.llvm.org/D153225
This updates:
- The status tables
- Feature test macros
- New headers for modules
The latter avoids forgetting about modules when implementing the feature
in a new header.
Reviewed By: #libc, philnik
Differential Revision: https://reviews.llvm.org/D153192
The development of C++23 is complete, so these issues will be adopted in
C++26 (or later).
Reviewed By: #libc, philnik
Differential Revision: https://reviews.llvm.org/D153053
The patch is based on D144994.
D151030 added the module definitions for the module std.
This patch wires in the module and enables the basic testing.
Some notable features are missing:
- There is no test that libc++ can be fully imported as a module.
- This lacks the parts for the std.compat module.
- The module is not shipped with libc++.
Implements parts of
- P2465R3 Standard Library Modules std and std.compat
Reviewed By: ldionne, aaronmondal, #libc
Differential Revision: https://reviews.llvm.org/D151814
These macros are always defined identically, so we can simplify the code a bit by merging them.
Reviewed By: ldionne, #libc
Spies: libcxx-commits, krytarowski, smeenai
Differential Revision: https://reviews.llvm.org/D152652
Header synospis sections of P1614R2 are implemented by other items usually. For completeness, let's mark some of them as "Complete".
Reviewed By: #libc, Mordante
Differential Revision: https://reviews.llvm.org/D152775
This is an extension and only adds the functions that are a considered a
but when called and ignoring the result.
Drive-by sort all nodiscard extensions in the documentation.
Reviewed By: #libc, philnik
Differential Revision: https://reviews.llvm.org/D152097
Implements parts of P1614R2:
- Removed global `operator!=` from `allocator`
Reviewed By: #libc, Mordante
Differential Revision: https://reviews.llvm.org/D152612
Depends on D146066
Depends on D132268
Implements parts of P1614R2 `operator<=>` for `stack`
Reviewed By: #libc, Mordante
Differential Revision: https://reviews.llvm.org/D146094
Implements part of P1614R2 "The Mothership has Landed"
Depends on D150188
Reviewed By: Mordante, #libc
Differential Revision: https://reviews.llvm.org/D132268
LIBCXX_ENABLE_FILESYSTEM should represent whether the platform has
support for a filesystem, not just whether we support <filesystem>.
This patch slightly generalizes the setting to also encompass whether
we provide <fstream>, since that only makes sense when a filesystem is
supported.
Differential Revision: https://reviews.llvm.org/D152168
