https://bugs.winehq.org/show_bug.cgi?id=40201
--- Comment #11 from Sagawa sagawa.aki+winebugs@gmail.com --- Thanks for testing. git bisect shows this is a regression introduced by 817d903cb97a1c088eecd0574745d8274726e912.
My previous patch completely ignores class and class_len arguments, but it seems to be wrong. So, I'll refine my patch.