[Bug libstdc++/94409] std::regexp (std::collate?) with GCC 7.3.1 on AIX, Japanese

[gcc-bugzilla at vlasiu dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94409

--- Comment #2 from gcc-bugzilla at vlasiu dot net ---
(In reply to Jonathan Wakely from comment #1)
> N.B. GCC 7 is no longer supported and will not be fixed (but the bug is also
> present in supported releases).

We are going to switch soon to GCC 8.3.1 or 9.1.1. It would be nice to have a
patch for any of those versions. Thank you.