In errgroup, the step to increment the WaitGroup counter (wg.Add) is written after acquiring a token from the semaphore (sem). Is it possible that if all goroutines finish execution and call wg.Done at nearly the same time, the currently blocked goroutines do not immediately call wg.Add due to scheduling issues, resulting in the WaitGroup counter dropping to zero and causing wg.Wait() to return prematurely, leading to errors in the program?
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