[issue17991] ctypes.c_char gives a misleading error when passed a one-character unicode string

[Terry J. Reedy]

Changes by Terry J. Reedy <tjreedy at udel.edu>:


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nosy: +amaury.forgeotdarc, meador.inge

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue17991>
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