Equivalent of fff164c22e and cedaf44ea2 In go1.14+, SIGURG is used by the runtime to handle preemtable system calls. In practice this signal is caught *frequently*. For reference: https://go.googlesource.com/proposal/+/master/design/24543-non-cooperative-preemption.md golang/go#37942 Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
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