[PATCH v2 0/4] MR9: ntdll: Implement __fastfail().

[Jinoh Kang (@iamahuman)]

__fastfail() is used by the Visual C++ runtime and Windows system
libraries to signal that the in-process state is corrupted and
unrecoverable.

If __fastfail() is invoked, the NT kernel raises a second-chance
non-continuable exception STATUS_STACK_BUFFER_OVERRUN.  This quickly
terminates the process, bypassing all in-process exception handlers
(since they all rely on the potentially corrupted process state).

--
  v2: ntdll: Properly parse UDF instruction in ARM.
      ntdll: Implement __fastfail().
      ntdll/tests: Add tests for __fastfail().
      include: Define fast fail codes and the __fastfail() intrinsic.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/9