[issue43916] Mark static types newly converted to heap types as immutable: add Py_TPFLAGS_DISALLOW_INSTANTIATION type flag

[Pablo Galindo Salgado]

Pablo Galindo Salgado <pablogsal at gmail.com> added the comment:

The problem is that the curses module is using a function that requires to be built in the core:

#ifdef Py_BUILD_CORE
extern int _PyStructSequence_InitType(
    PyTypeObject *type,
    PyStructSequence_Desc *desc,
    unsigned long tp_flags);
#endif

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<https://bugs.python.org/issue43916>
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