[mypyc] Detect if attribute definition conflicts with base class/trait #14535
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Require that all the attribute definitions have the same type. Overriding with a different type is unsafe, and we don't want to add runtime checks when accessing an attribute that might be overridden with a different type. If the types would have different runtime representations, supporting that at all would be complicated. Fixes mypyc/mypyc#970.
ichard26
approved these changes
Jan 29, 2023
jhance
approved these changes
Jan 30, 2023
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Require that all the attribute definitions have the same type. Overriding with a different type is unsafe, and we don't want to add runtime checks when accessing an attribute that might be overridden with a different type. If the types would have different runtime representations, supporting that at all would be complicated.
Fixes mypyc/mypyc#970.