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MDEV-29023 waitpid() cleanup
The case for "Unknown process $ret_pid exited" is never known to be valid. Such state is not documented for waitpid().
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@ -661,12 +661,14 @@ sub main {
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foreach my $pid (keys %children)
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{
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my $ret_pid= waitpid($pid, 0);
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if ($ret_pid != $pid){
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mtr_report("Unknown process $ret_pid exited");
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}
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else {
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delete $children{$ret_pid};
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if ($ret_pid == -1) {
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# Child was automatically reaped. Probably not possible
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# unless you $SIG{CHLD}= 'IGNORE'
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mtr_report("Child ${pid} was automatically reaped (this should never happend)");
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} elsif ($ret_pid != $pid) {
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confess("Unexpected PID ${ret_pid} instead of expected ${pid}");
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}
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delete $children{$ret_pid};
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}
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}
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