bpo-45219: Factor dictkey indexing #28389
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methane
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Sep 17, 2021
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Provides a better interface for querying dictkey objects and uses it
specialize.c.We will need this improved interface for future optimizations of object layout, so we might as well add it now.
Also fixes a super-obscure bug. If a globals dictionary contained a mutable key (your not supposed to, but the VM cannot prevent it), then a specialized
LOAD_GLOBALwould not see the change in behavior when the key mutated.https://bugs.python.org/issue45219