Evan Wilde b0b4cb67a1 Make asyncMainDrainQueue noreturn ...

CFRunLoopRun returns once it finishes, though the kernel may clean us up
before we get there. We effectively have a race condition between the
kernel cleaning us up and returning from a never returning function.

Small programs likely get cleaned up before reaching the ud2 instruction
emitted after the never returning function in swift, so they don't
notice, but programs of a sufficient size do. At that size, the program
will crash after what the programmer expects to be the end of their
program.

2021-03-19 12:33:26 -07:00

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