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Commit eaed0a32 authored by Alexis King's avatar Alexis King Committed by Marge Bot
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Add missing addInScope call for letrec binders in OccurAnal

This fixes #18044, where a shadowed variable was incorrectly substituted
by the binder swap on the RHS of a floated-in letrec. This can only
happen when the uniques line up *just* right, so writing a regression
test would be very difficult, but at least the fix is small and
straightforward.
parent 15312bbb
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