testsuite/tests/indexed-types/should_fail/T2627b.stderr


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T2627b.hs:20:24:
    Occurs check: cannot construct the infinite type:
      a0 ~ Dual (Dual a0)
    The type variable ‛a0’ is ambiguous
    In the expression: conn undefined undefined
    In an equation for ‛conn’:
        conn (Rd k) (Wr a r) = conn undefined undefined