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Joe Savona
9fdc56a36c
The issue in the previous PR was due to a ContextMutation function effect having a place that wasn't one of the functions' context variables. What was happening is that the `getContextRefOperand()` helper wasn't following aliases. If an operand had a context type, we recorded the operand as the context place — but instead we should be looking through to the context places of the abstract value. With this change the fixture now fails for a different reason — we infer this as a mutation of `params` and reject it because `params` is frozen (hook return value). This case is clearly a false positive: the mutation is on the outer, new `nextParams` object and can't possibly mutate `params`. Need to think more about what to do here but this is clearly more precise in terms of which variable we record as the context variable. [ghstack-poisoned]