Commit 86966d48 authored by Committed by Marge Bot
PmCheck: Properly handle constructor-bound type variables
In ghc/ghc!2192 (comment 246551) Simon convinced me that ignoring type variables existentially bound by data constructors have to be the same way as value binders. Sadly I couldn't think of a regression test, but I'm confident that this change strictly improves on the status quo.
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