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Simon Peyton Jones authored
This is an easy fix for Trac #15244: just avoid adding the same quantified Given constraint to the inert set twice. See TcSMonad Note [Do not add duplicate quantified instances].
a169149c
This is an easy fix for Trac #15244: just avoid adding the same quantified Given constraint to the inert set twice. See TcSMonad Note [Do not add duplicate quantified instances].