Either both functions get the same semaphore, and in effect, they run in serial. Or they don't, and the semaphore is in principle bogus. And there's no order of execution here, since you don't know in which order the functions are going to be performed.

But we've said this dozens of times already.

In reply to Re^35: Why is EO undefined? (More details!) by Anonymous Monk
in thread Why is the execution order of subexpressions undefined? by BrowserUk

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