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v0.8.1
Revision 0b1a1c8c4c556169799f027a39950de78d726b47 authored by Łukasz Langa on 08 June 2020, 18:41:34 UTC, committed by Łukasz Langa on 08 June 2020, 18:41:34 UTC
1 parent 3dc4428
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tf_inherit_check.py
# Helper script for test_tempfile.py.  argv[2] is the number of a file
# descriptor which should _not_ be open.  Check this by attempting to
# write to it -- if we succeed, something is wrong.

import sys
import os
from test.support import SuppressCrashReport

with SuppressCrashReport():
    verbose = (sys.argv[1] == 'v')
    try:
        fd = int(sys.argv[2])

        try:
            os.write(fd, b"blat")
        except OSError:
            # Success -- could not write to fd.
            sys.exit(0)
        else:
            if verbose:
                sys.stderr.write("fd %d is open in child" % fd)
            sys.exit(1)

    except Exception:
        if verbose:
            raise
        sys.exit(1)
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