testsuite/tests/gadt/gadt11.stderr


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gadt11.hs:12:3: error: [GHC-45219]
    • Data constructor ‘L2’ returns type ‘T1 Bool’
        instead of an instance of its parent type ‘T2 a’
    • In the definition of data constructor ‘L2’
      In the data type declaration for ‘T2’