testsuite/tests/gadt/CasePrune.stderr


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CasePrune.hs:14:31: error: [GHC-18872]
    • Couldn't match type ‘Int’ with ‘A’
        arising from the coercion of the method ‘ic’
          from type ‘T Int’ to type ‘T A’
    • When deriving the instance for (C A)