[Bug 58968] Fusion360 broken, stack overflow occurs since 10.15

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=58968

--- Comment #4 from Rafał Mużyło  ---
We might be looking at something close to a compiler bug here, due to a type
mismatch.

The way wcsupr is implemented in msvcrt is by calling _wcsupr_s_l with '-1' as
size, but the type for size is size_t (unsigned). _wcsupr_s_l doesn't really
account for such values...

Just to verify my idea is going in the right direction, try changing that
implementation in _wcsupr_l to - let's say '_wcsupr_s_l( str, wcslen(str)+1,
locale);' (likely won't be quite correct for NULL str, but otherwise OK...well,
unless I messed something up, so caution advised).