Charles-Francois Natali <neolo...@free.fr> added the comment:
_remaining_time doesn't check that endtime > current time and can return a
negative number, which would trigger an EINVAL when passed to select
(select_select doesn't seem to check for negative double).
Note that a check is performed through _check_timeout but after having called
select, so there are at least two possible ways to get this error:
The process blocks a little before calling select for the first time. This can
at least happen here:
if self.stdin and not self._communication_started:
# Flush stdio buffer. This might block, if the user has
# been writing to .stdin in an uncontrolled fashion.
self.stdin.flush()
if not input:
self.stdin.close()
There's also a short race window if the endtime deadline expires between the
call to _check_timeout and remaining_time.
----------
nosy: +neologix
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue11757>
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