slither/tests/ast-parsing/custom_error_with_state_variable.sol

// This test check our custom error lookup
// Which require a strict order of logic
// As _find_top_level require custom error
// To be parsed when they the function reaches
// the custom error lookup
// See https://github.com/crytic/slither/issues/1115

error ErrorWithParam(uint256 value);
uint256 constant ONE = 1;
uint256 constant TWO = ONE + 1;
function foo() pure { revert ErrorWithParam(0); }

library CustomErrors {
     error LibraryError();
}

contract Bar { 
    function baz() external {
            revert CustomErrors.LibraryError();
    }
}