id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
280	python: Make subprocess.Popen thread-safe	dmik		"In #275 `subprocess.Popen` was switched from fork to spawn. However, the new implementation is not thread safe. In order to implement piping of stdin/out/err in the started child the `dup()` technique is used where the parent stdin/out/err are temporarily associated with pipe handles and then reverted back after the child inherits them.

This is not thread safe as another parent thread might want to use stdin/out/err while they are redirected and the results may be quite unpredictable. One example is https://github.com/bitwiseworks/mozilla-os2/issues/247#issuecomment-346183854.

This needs to be fixed."	defect	closed	major		rpm		low	fixed		steve53@…