The following bug has been logged on the website:
Bug reference: 14454
Logged by: Vyacheslav Blinov
Email address: xammett(at)gmail(dot)com
PostgreSQL version: 9.6.1
Operating system: ubuntu
Description:
if you try to execute this code - you are return something strange
symbols.
this is a bug. please,fix it.
SELECT xmlelement(name foo, xmlattributes( 'фыв'as a));