Changes in cstddef

b9a2658a3e8bd13b0f9e7a8a440832a95b377216 - [libc++][C++03] Use `__cxx03/` headers in C++03 mode (#109002)

Sat, 21 Dec 2024 12:01:48 +0000

[libc++][C++03] Use `__cxx03/` headers in C++03 mode (#109002)This patch implements the forwarding to frozen C++03 headers asdiscussed inhttps://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc. In theRFC, we initially proposed selecting the right headers from the Clangdriver, however consensus seemed to steer towards handling this in thelibrary itself. This patch implements that direction.At a high level, the changes basically amount to making each publicheader look like this:```// inside #ifdef _LIBCPP_CXX03_LANG# include <__cxx03/vector>#else // normal content#endif```In most cases, public headers are simple umbrella headers so there isn'tmuch code in the #else branch. In other cases, the #else branch containsthe actual implementation of the header. List of files: /llvm-project/libcxx/include/cstddef

c166a9c713ec86b86f1f178a5133bc128fd0a610 - [libc++] Add #if 0 block to all the top-level headers (#119234)

Tue, 10 Dec 2024 15:02:12 +0000

[libc++] Add #if 0 block to all the top-level headers (#119234)Including The frozen C++03 headers results in a lot of formattingchanges in the main headers, so this splits these changes into aseparate commit instead.This is part ofhttps://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc. List of files: /llvm-project/libcxx/include/cstddef

d6832a611a7c4ec36f08b1cfe9af850dad32da2e - [libc++][modules] Modularize (#107254)

Thu, 05 Sep 2024 12:28:33 +0000

[libc++][modules] Modularize (#107254)Many headers include `` just for size_t, and pulling in additional content (e.g. the traits used for std::byte) is unnecessary. To solve this problem, this patch splits up `` into subcomponents so that headers can include only the parts that they actually require. This has the added benefit of making the modules build a lot stricter with respect to IWYU, and also providing a canonical location where we define `std::size_t` and friends (which were previously defined in multiple headers like `` and ``). After this patch, there's still many places in the codebase where we include `` when `<__cstddef/size_t.h>` would be sufficient. This patch focuses on removing `` includes from __type_traits to make these headers non-circular with ``. Additional refactorings can be tackled separately. List of files: /llvm-project/libcxx/include/cstddef

a3f8790901cafaec8bcd863bd30b4f9ab7917bd8 - [libc++][NFC] Minor reformatting in

Fri, 30 Aug 2024 19:38:02 +0000

[libc++][NFC] Minor reformatting in List of files: /llvm-project/libcxx/include/cstddef

83bc7b57714dc2f6b33c188f2b95a0025468ba51 - [libc++] Remove _LIBCPP_DISABLE_NODISCARD_EXTENSIONS and refactor the tests (#87094)

Mon, 22 Apr 2024 20:13:58 +0000

[libc++] Remove _LIBCPP_DISABLE_NODISCARD_EXTENSIONS and refactor the tests (#87094)This also adds a few tests that were missing. List of files: /llvm-project/libcxx/include/cstddef

37dca605c9bd41732da010ee97ed15ad9585a37d - [libc++] Clean up includes of <__assert> (#80091)

Thu, 29 Feb 2024 15:12:22 +0000

[libc++] Clean up includes of <__assert> (#80091)Originally, we used __libcpp_verbose_abort to handle assertion failures. That function was declared from all public headers. Since we don't use that mechanism anymore, we don't need to declare __libcpp_verbose_abort from all public headers, and we can clean up a lot of unnecessary includes. This patch also moves the definition of the various assertion categories to the <__assert> header, since we now rely on regular IWYU for these assertion macros. rdar://105510916 List of files: /llvm-project/libcxx/include/cstddef

9783f28cbb155e4a8d49c12e1c60ce14dcfaf0c7 - [libc++] Format the code base (#74334)

Mon, 18 Dec 2023 19:01:33 +0000

[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 List of files: /llvm-project/libcxx/include/cstddef

b81c69415e47bcf59801cb751eed08a6d1cb23f1 - [libc++][NFC] Add a few explicit 'inline' keywords, mostly in (#75234)

Wed, 13 Dec 2023 15:17:27 +0000

[libc++][NFC] Add a few explicit 'inline' keywords, mostly in (#75234)Even though constexpr implicitly makes functions inline, we try not to rely on this implicit effect in the code base. We are mostly consistent about using `inline` on non-template free-functions to make it clear that we don't have an ODR violation. This patch simply fixes a few places where we didn't explicitly use inline on non-template free functions, presumably because they were constexpr. Fixes #75227 List of files: /llvm-project/libcxx/include/cstddef

640274ff1fe17852615564a80d9f8c69b67f1d59 - [libc++][NFC] Refactor __enable_ifs in to be defaulted

Sun, 29 Oct 2023 10:49:50 +0000

[libc++][NFC] Refactor __enable_ifs in to be defaultedtemplate argumentsThis makes the library more consistent and reduces the size of manglednames a bit as a bonus. List of files: /llvm-project/libcxx/include/cstddef

4f15267d3dd797a15901fe9352f0d5fa121b9095 - [libc++][NFC] Replace _LIBCPP_STD_VER > x with _LIBCPP_STD_VER >= x

Mon, 13 Feb 2023 23:56:09 +0000

[libc++][NFC] Replace _LIBCPP_STD_VER > x with _LIBCPP_STD_VER >= xThis change is almost fully mechanical. The only interesting change is in `generate_feature_test_macro_components.py` to generate `_LIBCPP_STD_VER >=` instead. To avoid churn in the git-blame this commit should be added to the `.git-blame-ignore-revs` once committed.Reviewed By: ldionne, var-const, #libcSpies: jloser, libcxx-commits, arichardson, arphaman, wenleiDifferential Revision: https://reviews.llvm.org/D143962 List of files: /llvm-project/libcxx/include/cstddef

8cedff10a18d8eba9190a645626fa6a509c1f139 - [libc++] Diagnose when header search paths are set up incorrectly

Mon, 08 Aug 2022 21:03:56 +0000

[libc++] Diagnose when header search paths are set up incorrectlyAn issue I often see in codebases compiled for unusual platforms isthat header search paths are specified manually and are subtly wrong.For example, people will manually add `-isystem /usr/include`,which ends up messing up the layering of header search paths required bylibc++ (because the C Standard Library now appears *before* libc++ inthe search paths). Without this patch, this will end up causingcompilation errors that are pretty inscrutable. This patch aims toimprove the user experience by diagnosing this issue explicitly.In all cases I can think of, I would expect that a compilation erroroccur if these header search paths are not layered properly. Thisshould only provide an explicit diagnostic instead of failing dueto seemingly unrelated compilation errors.Differential Revision: https://reviews.llvm.org/D131441 List of files: /llvm-project/libcxx/include/cstddef

80c7e93a2a8448fa16fe28b99c733e93ec64df51 - [libc++] Add a bunch of missing _LIBCPP_HIDE_FROM_ABI

Sat, 13 Aug 2022 11:23:16 +0000

[libc++] Add a bunch of missing _LIBCPP_HIDE_FROM_ABIReviewed By: ldionne, Mordante, var-const, huixie90, #libcSpies: jloser, libcxx-commits, arichardson, miyukiDifferential Revision: https://reviews.llvm.org/D129968 List of files: /llvm-project/libcxx/include/cstddef

7e69bd9bf00ece8ac63aab91f73673d0d731bc24 - [libc++] Use __enable_if_t and is_integral in cstddef

Sat, 28 May 2022 13:22:25 +0000

[libc++] Use __enable_if_t and is_integral in cstddefReviewed By: ldionne, #libcSpies: libcxx-commitsDifferential Revision: https://reviews.llvm.org/D126469 List of files: /llvm-project/libcxx/include/cstddef

eebc1fb772c56df9958fb916b41ff3c329fae145 - [libc++] Granularize parts of

Fri, 20 May 2022 21:31:13 +0000

[libc++] Granularize parts of `` is quite a large header, so I'll granularize it in a few steps.Reviewed By: ldionne, #libcSpies: libcxx-commits, mgornyDifferential Revision: https://reviews.llvm.org/D124755 List of files: /llvm-project/libcxx/include/cstddef

385cc25a531a72c393cee44689e2c3194615bcec - [libc++] Ensure that all public C++ headers include <__assert>

Fri, 25 Mar 2022 16:55:36 +0000

[libc++] Ensure that all public C++ headers include <__assert>This patch changes the requirement for getting the declaration of theassertion handler from including <__assert> to including any publicC++ header of the library. Note that C compatibility headers areexcluded because we don't implement all the C headers ourselves --some of them are taken straight from the C library, like assert.h.It also adds a generated test to check it. Furthermore, this newgenerated test is designed in a way that will make it possible toreplace almost all the existing test-generation scripts with thissystem in upcoming patches.Differential Revision: https://reviews.llvm.org/D122506 List of files: /llvm-project/libcxx/include/cstddef

157bbe6aea22e87c822f6cda3cd404b8f657dce4 - [libc++] Remove the ability to use the std::nullptr_t emulation in C++03 mode

Wed, 08 Sep 2021 16:57:58 +0000

[libc++] Remove the ability to use the std::nullptr_t emulation in C++03 modeBack in https://reviews.llvm.org/D109459, we stopped using the C++03emulation for std::nullptr_t by default, which was an ABI break. Westill left a knob for users to turn it back on if they were broken bythe change, with a note that we would remove that knob after one release.The time has now come to remove the knob and clean up the std::nullptr_temulation.Differential Revision: https://reviews.llvm.org/D114786 List of files: /llvm-project/libcxx/include/cstddef

fa6b9e401085c0a210daf81ae79af6dd0144f129 - [libc++] Normalize all our '#pragma GCC system_header', and regression-test.

Wed, 02 Feb 2022 01:16:40 +0000

[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 List of files: /llvm-project/libcxx/include/cstddef

9c52a19e32ae6cbc2507a3fe50c915d72a1c4394 - [libc++][NFC] Add namespace comments in ranges

Tue, 01 Feb 2022 17:11:49 +0000

[libc++][NFC] Add namespace comments in rangesWith this patch there should be no more namespaces without closing commentReviewed By: ldionne, Quuxplusone, #libcSpies: libcxx-commitsDifferential Revision: https://reviews.llvm.org/D118668 List of files: /llvm-project/libcxx/include/cstddef

eb8650a75793b2bd079d0c8901ff066f129061da - [runtimes][NFC] Remove filenames at the top of the license notice

Wed, 17 Nov 2021 21:25:01 +0000

[runtimes][NFC] Remove filenames at the top of the license noticeWe've stopped doing it in libc++ for a while now because these nameswould end up rotting as we move things around and copy/paste stuff.This cleans up all the existing files so as to stop the spreadingas people copy-paste headers around. List of files: /llvm-project/libcxx/include/cstddef

f4c1258d5633fcf06385ff3fd1f4bf57ab971964 - [libc++] Add an option to disable wide character support in libc++

Mon, 23 Aug 2021 19:32:36 +0000

[libc++] Add an option to disable wide character support in libc++Some embedded platforms do not wish to support the C library functionalityfor handling wchar_t because they have no use for it. It makes sense forlibc++ to work properly on those platforms, so this commit adds a carve-outof functionality for wchar_t.Unfortunately, unlike some other carve-outs (e.g. random device), thispatch touches several parts of the library. However, despite the wideimpact of this patch, I still think it is important to support thisconfiguration since it makes it much simpler to port libc++ to someembedded platforms.Differential Revision: https://reviews.llvm.org/D111265 List of files: /llvm-project/libcxx/include/cstddef