[Bug 40350] MinGW binary crashes, but msvc6's one works fine in function when returning aggregate value

https://bugs.winehq.org/show_bug.cgi?id=40350

--- Comment #3 from Henri Verbeet  ---
(In reply to Dmitry from comment #2)
> So it is just luck that it works on windows?

Quite possibly. You'd have to look at the code that gets generated for the
caller to be sure, but my guess would be that it ends up overwriting some value
that isn't really used.