testsuite/tests/indexed-types/should_fail/T7862.stderr


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T7862.hs:23:10: warning: [-Wmissing-methods]
    • No explicit implementation for
        ‘+’, ‘*’, ‘abs’, ‘signum’, ‘fromInteger’, and (either ‘negate’
                                                              or
                                                              ‘-’)
    • In the instance declaration for ‘Num (Tower s a)’