__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).
Signed-off-by: Jinoh Kang <jinoh.kang.kr@gmail.com>