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unbuffered-signal-channel

Default severity: warning

The os/signal package uses non-blocking sends to deliver notifications. If no receiver is immediately ready, an unbuffered channel drops the signal. Give the channel enough capacity for the signals being handled.

Bad

Section titled “Bad”
ch := make(chan os.Signal)
signal.Notify(ch, os.Interrupt)

Good

Section titled “Good”
ch := make(chan os.Signal, 1)
signal.Notify(ch, os.Interrupt)