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Simon Peyton Jones authored
This patch fixes a rather tiresome issue, namely the fact that a TH declaration quote *shadows* bindings in outer scopes: f g = [d| f :: Int f = g g :: Int g = 4 |] Here, the outer bindings for 'f' (top-level) and 'g' (local) are shadowed, and the inner bindings for f,g should not be reported as duplicates. (Remember they are top-level bindings.) The actual bug was that we'd forgotten to delete 'g' from the LocalRdrEnv, so the type sig for 'g' was binding to the outer 'g' not the inner one.
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