[clang] [Serialization] [ASTWriter] Try to not record namespace as much as possible (PR #179178)

[Aiden Grossman via cfe-commits]

boomanaiden154 wrote:

> The following code (compiled with -stdlib=libc++)

Do you have an exact command line invocation? You're presumably using some form of modules?

https://github.com/llvm/llvm-project/pull/179178