[clang-tools-extra] [clang-doc] Move Info types into arenas (PR #190054)

[Paul Kirth via cfe-commits]

ilovepi wrote:

> > Thanks. yeah, I'll try a few more things. Is there anything important about that bot's config? our CI has mac x86 bots too, but they're not hitting this https://luci-milo.appspot.com/ui/p/fuchsia/builders/toolchain.ci/clang-mac-x64/b8684781970899672257/overview.
> 
> I'm not familiar with your CI, so maybe I'm missing it, but does it actually run the clang-tools-extra tests? In step 15.13, the execution details debug log only seems to run check-clang/check-lld/check-llvm/check-poly. In my test run locally, (check-clang/llvm/lld) that doesn't actually run the clang-tools-extra tests. (I don't build/test poly locally).
> 

oh, that is surprising. That bot should have been running all the tests, AFAIK. I'll ask on my team. In any case, I guess we can ignore any results from there.

> > Does it enable any additional checking beyond asserts? some other config that may be important?
> 
> The bot is running in a VMWare virtual machine running macOS 14.8.5 with a fairly old version of the XCode toolchain (clang-1500.3.9.4) as well. Everything else should be stock. The underlying hardware is a 2018 Mac Mini (i7-8700B/64GB memory).
> 

Thanks. I checked that bots CMake invocation, and it seems like its really just asserts, AFAICT.

> > I did update: #191644 with what I hope was the missing functionality. If not ... I'm really lost.
> 
> I still see the failures with your latest changes unfortunately.

I'm just going to revert in #191668. Do let me know if it doesn't go green after that. I'll try to reland these again.

https://github.com/llvm/llvm-project/pull/190054