Libc++'s policy is to support only the latest released Xcode, which is
Xcode 16.x. We did update our CI jobs to Xcode 16.x, but we forgot to
update the documentation, which still mentioned Xcode 15. This patch
updates the documentation and cleans up outdated mentions of
apple-clang-15 in the test suite.
After a recent Github Actions runner policy change [1], the version of
Xcode included in the macos-14 image went from Xcode 16 to Xcode 15,
breaking our build bots.
This moves the bots to the macos 15 (public preview) image, which
contains Xcode 16.
Also, adjust an UNSUPPORTED annotation that was incorrectly targeting
macos 13.7 when it should have been targeting a version of AppleClang.
[1]: https://github.com/actions/runner-images/issues/10703
058e4454 added an XFAIL for this test on AIX because of a backend
limitation. That backend limitation
has been resolved by 0295c2ad and will be available for clang 19, so we
should update the test to
limit the XFAIL to clang versions before that.
This patch adds a configuration of the libc++ test suite that enables
optimizations when building the tests. It also adds a new CI
configuration to exercise this on a regular basis. This is added in the
context of [1], which requires building with optimizations in order to
hit the bug.
[1]: https://github.com/llvm/llvm-project/issues/68552
I've structured this into a series of commits for even easier reviewing,
if that helps. I could easily split this up into separate PRs if
desired, but as this is low-risk with simple edits, I thought one PR
would be easiest.
* Drop unnecessary semicolons after function definitions.
* Cleanup comment typos.
* Cleanup `static_assert` typos.
* Cleanup test code typos.
+ There should be no functional changes, assuming I've changed all
occurrences.
* ~~Fix massive test code typos.~~
+ This was a real problem, but needed more surgery. I reverted those
changes here, and @philnik777 is fixing this properly with #73444.
* clang-formatting as requested by the CI.
