17 Commits

Author SHA1 Message Date
Peng Liu
38fb0117ab
[libc++] Make forward_list constexpr as part of P3372R3 (#129435)
Fixes #128658
2025-06-11 12:13:36 -04:00
Nikolas Klauser
f69585235e
[libc++] Put _LIBCPP_NODEBUG on all internal aliases (#118710)
This significantly reduces the amount of debug information generated
for codebases using libc++, without hurting the debugging experience.
2025-01-08 11:12:59 -05:00
Nikolas Klauser
e99c4906e4
[libc++] Granularize <cstddef> includes (#108696) 2024-10-31 02:20:10 +01:00
Louis Dionne
9783f28cbb
[libc++] Format the code base (#74334)
This patch runs clang-format on all of libcxx/include and libcxx/src, in
accordance with the RFC discussed at [1]. Follow-up patches will format
the benchmarks, the test suite and remaining parts of the code. I'm
splitting this one into its own patch so the diff is a bit easier to
review.

This patch was generated with:

   find libcxx/include libcxx/src -type f \
      | grep -v 'module.modulemap.in' \
      | grep -v 'CMakeLists.txt' \
      | grep -v 'README.txt' \
      | grep -v 'libcxx.imp' \
      | grep -v '__config_site.in' \
      | xargs clang-format -i

A Git merge driver is available in libcxx/utils/clang-format-merge-driver.sh
to help resolve merge and rebase issues across these formatting changes.

[1]: https://discourse.llvm.org/t/rfc-clang-formatting-all-of-libc-once-and-for-all
2023-12-18 14:01:33 -05:00
Louis Dionne
77a00c0d54
[libc++] Replace uses of _VSTD:: by std:: (#74331)
As part of the upcoming clang-formatting of libc++, this patch performs
the long desired removal of the _VSTD macro.

See https://discourse.llvm.org/t/rfc-clang-formatting-all-of-libc-once-and-for-all
for the clang-format proposal.
2023-12-05 11:19:15 -05:00
varconst
d0b51657c2 [libc++] Fix an exception safety issue in forward_list and add tests.
When inserting nodes into a forward list, each new node is allocated but
not constructed. The constructor was being called explicitly on the node
`value_` but the `next_` pointer remained uninitialized rather than
being set to null. This bug is only triggered in the cleanup code if an
exception is thrown -- upon successful creation of new nodes, the last
incorrect "next" value is overwritten to a correct pointer.

This issue was found due to new tests added in
https://reviews.llvm.org/D149830.

Differential Revision: https://reviews.llvm.org/D152327
2023-07-12 10:11:26 -07:00
Nicole Rabjohn
92e4d6791f Fixing conflicting macro definitions between curses.h and the standard library.
POSIX allows certain macros to exist with generic names (i.e. refresh(), move(), and erase()) to exist in `curses.h` which conflict with functions found in std::filesystem, among others. This patch undefs the macros in question and adds them to LIBCPP_PUSH_MACROS and LIBCPP_POP_MACROS.

Reviewed By: #libc, philnik, ldionne

Differential Revision: https://reviews.llvm.org/D147356
2023-07-06 17:21:08 +00:00
Louis Dionne
368faacac7 [libc++] Revert "Protect users from relying on detail headers" & related changes
This commit reverts 5aaefa51 (and also partly 7f285f48e77 and b6d75682f9,
which were related to the original commit). As landed, 5aaefa51 had
unintended consequences on some downstream bots and didn't have proper
coverage upstream due to a few subtle things. Implementing this is
something we should do in libc++, however we'll first need to address
a few issues listed in https://reviews.llvm.org/D106124#3349710.

Differential Revision: https://reviews.llvm.org/D120683
2022-03-01 08:20:24 -05:00
Christopher Di Bella
5aaefa510e [libcxx][modules] protects users from relying on detail headers
libc++ has started splicing standard library headers into much more
fine-grained content for maintainability. It's very likely that outdated
and naive tooling (some of which is outside of LLVM's scope) will
suggest users include things such as <__ranges/access.h> instead of
<ranges>, and Hyrum's law suggests that users will eventually begin to
rely on this without the help of tooling. As such, this commit
intends to protect users from themselves, by making it a hard error for
anyone outside of the standard library to include libc++ detail headers.

Differential Revision: https://reviews.llvm.org/D106124
2022-02-26 09:00:25 +00:00
Arthur O'Dwyer
ea2206d70d [libc++] Replace includes of <utility> with specific detail headers
Basically a rebase of D104980; most of that patch had already happened
via gradual drive-by changes, but this finishes it up.
Don't touch the inclusions from `<__functional_base>`, `<__hash_table>`,
or `<__locale>`; those could be removed if we propagated the
inclusions up to the includers of those files, but there are lots
of those includers.

`<algorithm>`, `<functional>`, and `<memory>` already include `<utility>`
at the top level. `<iterator>` did not, so I've added it there.

Differential Revision: https://reviews.llvm.org/D119020
2022-02-04 17:08:32 -05:00
Arthur O'Dwyer
fa6b9e4010 [libc++] Normalize all our '#pragma GCC system_header', and regression-test.
Now we'll notice if a header forgets to include this magic phrase.

Differential Revision: https://reviews.llvm.org/D118800
2022-02-04 12:27:19 -05:00
Louis Dionne
64184b4af0 [libc++][NFC] Remove useless _LIBCPP_PUSH_MACROS
Only files that actually use min/max are required to do this dance.

Differential Revision: https://reviews.llvm.org/D108778
2021-08-27 12:41:55 -04:00
Christopher Di Bella
332da1c283 [libcxx][iwyu] ensures we IWYU as prep for modules
This has been broken out of D104170 since it should be merged whether or
not we go ahead with the module map changes.

Differential Revision: https://reviews.llvm.org/D104175
2021-06-15 19:43:25 +00:00
Petr Hosek
d9633f229c Revert "[libcxx][module-map] creates submodules for private headers"
This reverts commit f1417eb9b1f51b689c78dd8cb0114c1749dd2845 as it
uncovered a Clang bug PR50592.
2021-06-07 17:10:05 -07:00
Christopher Di Bella
f1417eb9b1 [libcxx][module-map] creates submodules for private headers
Most of our private headers need to be treated as submodules so that
Clang modules can export things correctly. Previous commits that split
monolithic headers into smaller chunks were unaware of this requirement,
and so this is being addressed in one fell swoop. Moving forward, most
new headers will need to have their own submodule (anything that's
conditionally included is exempt from this rule, which means `__support`
headers aren't made into submodules).

This hasn't been marked NFC, since I'm not 100% sure that's the case.

Differential Revision: https://reviews.llvm.org/D103551
2021-06-03 18:18:30 +00:00
Louis Dionne
4cd6ca102a [libc++] NFC: Normalize #endif // comment indentation 2021-04-20 12:03:32 -04:00
Louis Dionne
e98060fa72 [libc++] Move __memory/utilities.h to __memory/allocation_guard.h
This matches the granularity of other headers that were split off of <__memory>.
2021-04-14 14:00:48 -04:00