[Bug c++/103871] [11/12/13 Regression] co_await causes build error

[jason at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103871

--- Comment #17 from Jason Merrill <jason at gcc dot gnu.org> ---
Iain, do you want to attach your WIP here so someone else can finish it up?  Or
do you expect to finish it within the next month?