Process.waitpid does not work with IO.popen4
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Key: JRUBY-5684
URL: http://jira.codehaus.org/browse/JRUBY-5684
Project: JRuby
Issue Type: Bug
Affects Versions: JRuby 1.6
Reporter: Aman Gupta
Assignee: Thomas E Enebo
Calling Process.wait on the pid returned from IO.popen4 always raises an ECHILD
{noformat}
jruby-1.6.0 :014 > pid, i,o,e = IO.popen4('ls'); i.close; Process.wait(pid)
Errno::ECHILD: No child processes - No child processes
{noformat}
Using the block format of IO.popen4 works however, and sets $? correctly.
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