[Bug gcov-profile/88994] [GCOV] encoding (or unicode) error with gcov/gcc9 when generating filename

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88994

--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Robin from comment #2)
> Nice :)
> Feel free to ask me any additionnal things if it may help.

I guess I've got it.
Patch candidate:
https://gcc.gnu.org/ml/gcc-patches/2019-01/msg01350.html