#14371: Race condition in singular doctest
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Reporter: jdemeyer | Owner: mvngu
Type: defect | Status: needs_review
Priority: blocker | Milestone: sage-5.9
Component: doctest coverage | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: Jeroen Demeyer | Merged in:
Dependencies: | Stopgaps:
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Comment (by vbraun):
This doesn't make sense, if something is wrong with the file descriptor
then write would cause EBADF not EINVAL. Are you sure that the error comes
from writing to the old, dead subprocess and not to the newly-forked one?
And why are we even catching RuntimeError in sage.interface.singular.set?
I would guess that the issue is the absence of `forkpty()` on Solaris?
I.e. no `os.forkpty` in Python, so `pty.fork` falls back to an alternate
implementation which presumably triggers a race in Solaris. Contact
upstream ;-)
It seems ridiculous to change the doctest here instead of adding a
workaround to `sage.interface`. If this doesn't work then your platform
just can't run Sage.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14371#comment:6>
Sage <http://www.sagemath.org>
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