The aim is to add the missing z/OS specific implementations for mbsnrtowcs and wcsnrtombs, as part of libc++.
Differential Revision: https://reviews.llvm.org/D98207
Implements parts of:
- P0898R3 Standard Library Concepts
- P1754 Rename concepts to standard_case for C++20, while we still can
Depends on D97911
Reviewed By: EricWF, #libc, Quuxplusone
Differential Revision: https://reviews.llvm.org/D98154
Implements parts of:
- P0898R3 Standard Library Concepts
- P1754 Rename concepts to standard_case for C++20, while we still can
Depends on D97443
Reviewed By: Quuxplusone, EricWF, #libc
Differential Revision: https://reviews.llvm.org/D97911
Implements parts of:
- P0898R3 Standard Library Concepts
- P1754 Rename concepts to standard_case for C++20, while we still can
Depends on D97359
Reviewed By: EricWF, #libc, Quuxplusone, zoecarver
Differential Revision: https://reviews.llvm.org/D97443
Implements parts of:
- P0898R3 Standard Library Concepts
- P1754 Rename concepts to standard_case for C++20, while we still can
Depends on D97162
Reviewed By: EricWF, #libc, Quuxplusone
Differential Revision: https://reviews.llvm.org/D97359
Check that appends with a path object doesn't do allocations, even
on windows.
Suggested by Marek in D98398. The patch might apply without D98398
(depending on how much of the diff context has to match), but doesn't
make much sense until after that patch has landed.
Differential Revision: https://reviews.llvm.org/D98412
The aim is to add the missing z/OS specific locale functions for libc++ (newlocale, freelocale and uselocale).
Reviewed By: ldionne, #libc, curdeius
Differential Revision: https://reviews.llvm.org/D98044
Implements parts of:
- P0898R3 Standard Library Concepts
- P1754 Rename concepts to standard_case for C++20, while we still can
Depends on D96742
Differential Revision: https://reviews.llvm.org/D97162
Implements parts of:
- P0898R3 Standard Library Concepts
- P1754 Rename concepts to standard_case for C++20, while we still can
Depends on D96660
Reviewed By: ldionne, #libc, Quuxplusone
Differential Revision: https://reviews.llvm.org/D97176
The aim is to add missing non-posix functions for z/OS libc++ (strtod_l and strtof_l).
Reviewed By: #libc, ldionne
Differential Revision: https://reviews.llvm.org/D97051
This fixes clang warnings (that are treated as errors when running
the test suite):
libcxx/include/string:4409:59: error: definition of dllimport static field [-Werror,-Wdllimport-static-field-def]
basic_string<_CharT, _Traits, _Allocator>::npos;
The warning is normally not visible as long as the libc++ headers
are treated as system headers.
The same construct is always an error in MSVC.
(One _LIBCPP_FUNC_VIS was added in
2d8f23f571, which broke DLL builds.
59919c4d6b fixed this by adding another
_LIBCPP_FUNC_VIS on the declaration for consistency, but the underlying
issue remained, that one can't use dllimport here.)
Differential Revision: https://reviews.llvm.org/D97168
Implements parts of:
- P0898R3 Standard Library Concepts
- P1754 Rename concepts to standard_case for C++20, while we still can
Depends on D96660
Reviewed By: ldionne, #libc
Differential Revision: https://reviews.llvm.org/D96742
Implements parts of:
- P0898R3 Standard Library Concepts
- P1754 Rename concepts to standard_case for C++20, while we still can
Depends on D96660
Reviewed By: ldionne, #libc
Differential Revision: https://reviews.llvm.org/D96683
This is just a shorter synonym for `__identity<T>::type`.
Use it consistently throughout, where possible.
There is still some metaprogramming in <memory> and <variant>
where `__identity` is being used _without_ immediately calling
`::type` on it; but this is the unusual case, and it will become
even less usual as we start deliberately protecting certain types
against deduction (e.g. D97742).
Differential Revision: https://reviews.llvm.org/D97862
Implements parts of:
- P0898R3 Standard Library Concepts
- P1754 Rename concepts to standard_case for C++20, while we still can
Depends on D96657
Reviewed By: ldionne, Mordante, #libc
Differential Revision: https://reviews.llvm.org/D96660
Implements part of P0898R3 Standard Library Concepts
Reworks D74351 to use requires-clauses over SFINAE and so that it more
closely follows the wording.
Co-authored by: Michael Schellenberger Costa <mschellenbergercosta@googlemail.com>
(Michael did all the heavy lifting and I came in to polish it for
submission, since Michael is focussing on `std::format` now.)
Reviewed By: ldionne, #libc
Differential Revision: https://reviews.llvm.org/D96657
libc++ was previously a bit confused by what the value of __cpp_concepts
should be. Also replaces `__floating_point` with `floating_point` now
that it exists.
Differential Revision: https://reviews.llvm.org/D97015
The implementation of tuple's constructors and assignment operators
currently diverges from the way the Standard specifies them, which leads
to subtle cases where the behavior is not as specified. In particular, a
class derived from a tuple-like type (e.g. pair) can't be assigned to a
tuple with corresponding members, when it should. This commit re-implements
the assignment operators (BUT NOT THE CONSTRUCTORS) in a way much closer
to the specification to get rid of this bug. Most of the tests have been
stolen from Eric's patch https://reviews.llvm.org/D27606.
As a fly-by improvement, tests for noexcept correctness have been added
to all overloads of operator=. We should tackle the same issue for the
tuple constructors in a future patch - I'm just trying to make progress
on fixing this long-standing bug.
PR17550
rdar://15837420
Differential Revision: https://reviews.llvm.org/D50106
The spec doesn't declare it as an enum class, and being declared
as an enum class breaks referring to the values as e.g.
path::auto_format.
Differential Revision: https://reviews.llvm.org/D97084
This matches what MS STL returns; in std::filesystem, forward slashes
are considered generic dir separators that are valid on all platforms.
Differential Revision: https://reviews.llvm.org/D91181
This patch implements 2802. Requires _Deleter to have call operator and be move constructible. Based on D62233.
Refs PR37637.
Differential Revision: https://reviews.llvm.org/D62274
Implements parts of:
- P0898R3 Standard Library Concepts
- P1754 Rename concepts to standard_case for C++20, while we still can
Differential Revision: https://reviews.llvm.org/D96577
The root_path function has to be changed to return the parsed bit
as-is; otherwise a path like "//net" gets a root path of "//net/", as
the root name, "//net", gets the root directory (an empty string) appended,
forming "//net/". (The same doesn't happen for the root dir "c:" though.)
Differential Revision: https://reviews.llvm.org/D91178
The namespace is unnecessary, and libc++ style is not to include it on type names.
(As opposed to function names, where qualification affects ADL; and in certain
function signatures where `std::` and `_VSTD::` might be mangled differently.
This is none of those situations.)
We need CLOCK_MONOTONIC equivalent implementation for z/OS within libc++. The default implementation is asserting.
On z/OS the lack of 'clock_gettime()' and 'time_point()' force us to look for alternatives.
The current proposal is to use `gettimeofday()` for CLOCK_MONOTONIC which is also used in CLOCK_REALTIME. This will allow us to skip the assertion with compromised CLOCK_MONOTONIC implementation which will not guarantee to never go back in time because it will use `gettimeofday()` but only when it's set.
Is this a good compromise for platforms which does not support monotonic clock?
Hopefully this will spark the discussion and agreement how to proceed in this situation.
Reviewed By: #libc, ldionne, hubert.reinterpretcast
Differential Revision: https://reviews.llvm.org/D93542
It seems like modifying the header doesn't cause libc++ to be rebuild.
So the breakage of the previous commit didn't happen on my system.
This should fix the build of https://buildkite.com/mlir/mlir-core
Implements parts of:
- P0645 Text Formatting
Depends on D92214
Reland with changes:
The format header will only be compiled if the compiler used has support
for concepts. This should fix the issues with the initial version.
Differential Revision: https://reviews.llvm.org/D93166
Not using builtins doesn't always imply worse code,
but for e. g. isinf, this is 30%+ faster.
Before:
name time/op
BM_isinf 2.14ns ± 2%
After:
name time/op
BM_isinf 1.33ns ± 2%
Reviewed By: #libc, ldionne
Differential Revision: https://reviews.llvm.org/D88854
Implements parts of:
- P0898R3 Standard Library Concepts
- P1754 Rename concepts to standard_case for C++20, while we still can
Differential Revision: https://reviews.llvm.org/D96235
Implements parts of:
- P0898R3 Standard Library Concepts
- P1754 Rename concepts to standard_case for C++20, while we still can
Reviewed By: ldionne, #libc
Differential Revision: https://reviews.llvm.org/D74292
Implements parts of:
* P0898R3 Standard Library Concepts
* P1754 Rename concepts to standard_case for C++20, while we still can
Differential Revision: https://reviews.llvm.org/D88131
Implements parts of:
- P0898R3 Standard Library Concepts
- P1754 Rename concepts to standard_case for C++20, while we still can
Depends on D96230
Differential Revision: https://reviews.llvm.org/D96232
Muiez Ahmed