[Bug 51610] Cygwin (x64) programs only run when piped

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51610

--- Comment #3 from Fabian Maurer  ---
Created attachment 70475
  --> https://bugs.winehq.org/attachment.cgi?id=70475
Stack test program with source

For easier debugging, I attached a simplified version of the problematic code
as a testcase.

This example copies the problematic code from cygwin, and then tries to open a
messagebox. For some reason, that cygwin function doesn't work under wine and
messes up the stack.