[Bug libstdc++/78486] feature request: std::iu16stringstream std::ou16stringstream, and utf8

[jmichae3 at yahoo dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78486

--- Comment #3 from Jim Michaels <jmichae3 at yahoo dot com> ---
also,
u16strfuncs-nostr.cpp:612:3: error: 'u16out' is not a member of 'std'
   std::u16out<<u"{";

this got removed from iostream.