[3.7] closes bpo-32859: Don't retry dup3() if it is not available at runtime (GH-5708)#5768
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pythonGH-5708) os.dup2() tests for dup3() system call availability at runtime, but doesn't remember the result across calls, repeating the test on each call with inheritable=False. Since the caller of os.dup2() is expected to hold the GIL, fix this by making the variable holding the test result static. (cherry picked from commit b3caf38) Co-authored-by: Alexey Izbyshev <izbyshev@users.noreply.github.com>
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@izbyshev and @benjaminp: Backport status check is done, and it's a success ✅ . |
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Thanks, @benjaminp! |
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os.dup2() tests for dup3() system call availability at runtime,
but doesn't remember the result across calls, repeating
the test on each call with inheritable=False.
Since the caller of os.dup2() is expected to hold the GIL,
fix this by making the variable holding the test result static.
(cherry picked from commit b3caf38)
Co-authored-by: Alexey Izbyshev izbyshev@users.noreply.github.com
https://bugs.python.org/issue32859