abstract contract B { function iWillRevert() pure public virtual { revert(); } } abstract contract X { function iWillRevert() pure public virtual { revert(); } } contract C is B, X { function iWillRevert() pure public override(B, X) { } function test(bool _param) pure external returns(uint256) { if (_param) return 1; B.iWillRevert(); } } // ----