egorzhdan added a comment.
Herald added a project: All.

Apologies for landing this too quickly! I'll adjust this logic in a separate 
patch: https://reviews.llvm.org/D121141

In D120160#3352399 <https://reviews.llvm.org/D120160#3352399>, @Mordante wrote:

> `-funstable` is an option that controls multiple flags therefore I think it 
> would be good to have a separate flag to opt-in for unstable/incomplete 
> libc++ features. That makes it easier to _only_ opt-in to these features.

@Mordante could you please elaborate a little bit, are you proposing a separate 
flag that would be equivalent to `-Xcc -funstable` (essentially to enable 
`LangOpts.Unstable` but not the rest of the flags) and have a different 
spelling to indicate that it is specific to libc++?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D120160/new/

https://reviews.llvm.org/D120160

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