Software Crashing on High Core Count CPUs

[BossOfGames]

I currently use a Ryzen Threadripper 3960x, which has 48 logical cores. When the Orbiter application launches on my platform, the main screen open and closes shortly thereafter. When viewing Windows Event Viewer, I get a STATUS_STACK_BUFFER_OVERRUN error.

This same error came up recently in the release of Microsoft Flight Simulator 2024, and it was determined that this only came up on computers above 32 cores.

I will investigate a fix and possibly shoot in a PR if I can wrap my head around it.

[Urwumpe]

Maybe mention that the error code is 0xC0000409, which might ring some bells for C++ developers: It is the resulting error code of an uncaught exception in MSVC++.

I don't think the error is simply caused by the number of cores, but it might help triggering the bug, for example in DirectX. Can you trigger the error in a debugger session?