[Bug libstdc++/71107] wstring_convert::from_bytes produces wide chars with the wrong byte order

[cantabile.desu at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71107

--- Comment #7 from Bitterblue <cantabile.desu at gmail dot com> ---
It's good to have a test case. I imagine that will help whoever finally figures
out how to fix this bug.