DerivedRedefinition.ice:23: operation `op' is already defined as an operation in a base interface or class DerivedRedefinition.ice:24: operation `op' is already defined as an operation in a base interface or class DerivedRedefinition.ice:40: operation `op' is already defined as an operation in a base interface or class DerivedRedefinition.ice:44: ambiguous multiple inheritance: `D3' inherits operation `op' from two or more unrelated base interfaces DerivedRedefinition.ice:49: data member `l' is already defined as a data member in a base interface or class DerivedRedefinition.ice:51: data member `l' is already defined as a data member in a base interface or class