[clang] [libcxx] [clang] Preserve Qualifiers and type sugar in TemplateNames (PR #93433)

[Matheus Izvekov via cfe-commits]

mizvekov wrote:

> so after this patch, clang seems to be crashing on:

Thanks for the reproducer. Yeah this is about default argument deduction, which doesn't involve default arguments as written in source.

I confirm the crash and it's indeed caused by changes in this patch. The fix is very simple and I will be posting a patch shortly.



https://github.com/llvm/llvm-project/pull/93433