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| git_commit |
commit d6832a611a7c4ec36f08b1cfe9af850dad32da2e Author: Louis Dionne <ldionne.2@gmail.com> Date: Thu Sep 5 08:28:33 2024 -0400 [libc++][modules] Modularize <cstddef> (#107254) Many headers include `<cstddef>` 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 `<cstddef>` 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 `<cstddef>` and `<ctime>`). After this patch, there's still many places in the codebase where we include `<cstddef>` when `<__cstddef/size_t.h>` would be sufficient. This patch focuses on removing `<cstddef>` includes from __type_traits to make these headers non-circular with `<cstddef>`. Additional refactorings can be tackled separately. |