Author erlendaasland
Recipients Mark.Shannon, corona10, erlendaasland, gvanrossum, shihai1991, vstinner
Date 2021-04-22.08:20:29
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FWIW, I was the one who converted arraymodule to use heap types in 75bf107c62fbdc00af51ee4f6ab69df4bd201104 (GH-23124) in January. Sorry 'bout the accidental change of behaviour.

> I think we may need a new flag bit meaning "built-in type, immutable". This bit should not be inherited of course.


See attached PoC patch. As far as I understand, type flags must be explicitly inherited in Objects/typeobject.c, no?

Should all previous static types be immutable, or are there exceptions?
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2021-04-22 08:20:29erlendaaslandsetrecipients: + erlendaasland, gvanrossum, vstinner, Mark.Shannon, corona10, shihai1991
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