[issue39593] ctypes s_set() uses strlen() and so truncates string at null character

[STINNER Victor]

Change by STINNER Victor <vstinner at python.org>:


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title: Adding a unit test of ctypes -> ctypes s_set() uses strlen() and so truncates string at null character

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39593>
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