testsuite/tests/indexed-types/should_fail/SimpleFail15.stderr


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SimpleFail15.hs:5:1:
    Illegal polymorphic or qualified type: a ~ b => t
    Perhaps you intended to use -XRankNTypes or -XRank2Types
    In the type signature for `foo':
      foo :: (a, b) -> (a ~ b => t) -> (a, b)