Update the tested Standard C++ APIs for libc++

[SergeyKopienko]

In this PR we marked tests functions of libc++ Standard C++ APIs, which works in Kernel code in AdaptiveCpp compiler.

[dmitriy-sobolev]

Looks fair to me. I confirm that libc++ is not regularly tested.
We can update the table again after testing it manually or setting up automatic testing.

I would suggest waiting for others' opinions, though.

[timmiesmith]

Was this gap introduced when the clang++ driver was removed from the DPC++ compiler distribution? I think in order to test with the clang++ driver we would need to use a build of the https://github.com/intel/llvm.

[SergeyKopienko]

Was this gap introduced when the clang++ driver was removed from the DPC++ compiler distribution? I think in order to test with the clang++ driver we would need to use a build of the https://github.com/intel/llvm.

https://www.intel.com/content/www/us/en/developer/articles/troubleshooting/sourcing-oneapi-overrides-existing-clang-drivers.html : "The oneAPI provided clang/clang++ drivers were not intended to be used by customers..."

[akukanov]

@timmiesmith can this patch be retargeted to 2022.8 (and the respective branch) instead, or is it already late?

[timmiesmith]

@timmiesmith can this patch be retargeted to 2022.8 (and the respective branch) instead, or is it already late?

I think we're too late for inclusion in the oneAPI 2025.1 release, but we can pull this into the 2022.8.0 release branch so the open source release has the correct status.

[SergeyKopienko]

@timmiesmith can this patch be retargeted to 2022.8 (and the respective branch) instead, or is it already late?

I think we're too late for inclusion in the oneAPI 2025.1 release, but we can pull this into the 2022.8.0 release branch so the open source release has the correct status.

I have prepared separate PR #2086 for 2022.8

[SergeyKopienko]

@SergeyKopienko, following our experiments, I think we should change this line:

libc++ (LLVM)                                 Provided with Clang* 11.0, Clang 14.0,
                                              Clang 17.0, Clang 18.1

and get this:

libc++ (LLVM)                                 Provided with Clang* 20.1

I recommend covering more versions to make the table more useful. Clang 20.1 was released in March 2025 — very recently. I can assist with setting up the environment.

Done.

[dmitriy-sobolev]

LGTM.

As before, I suggest waiting for others' opinions.

[timmiesmith]

LGTM. Thank you.

[SergeyKopienko]

@dmitriy-sobolev, thanks a lot for preparing test environment and you comments during review!