[Bug c++/88741] [9 Regression] Spurious "too long" error inside template

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88741

--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Looks like we neglect to strip the location wrapper in complete_array_type (if
it's in a CONSTRUCTOR).  Lookin' more.