[issue46903] Crash when setting attribute with string subclass as the name (--with-pydebug)

[Ronald Oussoren]

Ronald Oussoren <ronaldoussoren at mac.com> added the comment:

A hard crash seems wrong to me, and I'm not convinced yet that checking that the type of the attribute name is exactly string is correct.

Found while debugging a crash in PyObjC's testsuite, PyObjC uses a subclass of str to represent Objective-C strings.  Using such instances works fine in practice, but causes a crash in a --with-pydebug build due to this assertion.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue46903>
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