testsuite/tests/deriving/should_fail/T14916.stderr


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T14916.hs:7:24: error:
    • Class ‘~’ does not support user-specified instances
    • In the data declaration for ‘A’

T14916.hs:8:24: error:
    • Class ‘Coercible’ does not support user-specified instances
    • In the data declaration for ‘B’