[Bug c++/84782] Rejects a maybe C++ code snippet

[raphael.kubo.da.costa at intel dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84782

--- Comment #12 from Raphael Kubo da Costa <raphael.kubo.da.costa at intel dot 
com> ---
FWIW, the snippet from comment #1 builds fine with GCC >= 9.1 at least.