[issue39763] distutils.spawn should use subprocess (hang in parallel builds on QNX)

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

Attached fork_mt.py example uses exec_fn() function... which is not defined. Is it on purpose?

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39763>
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