%Warning-LITENDIAN: t/t_metacmt_onoff.v:8:8: Little bit endian vector: MSB < LSB of bit range: 0:1 8 | reg [0:1] show1; /*verilator lint_off LITENDIAN*/ reg [0:2] ign2; /*verilator lint_on LITENDIAN*/ reg [0:3] show3; | ^ ... Use "/* verilator lint_off LITENDIAN */" and lint_on around source to disable this message. %Warning-LITENDIAN: t/t_metacmt_onoff.v:8:109: Little bit endian vector: MSB < LSB of bit range: 0:3 8 | reg [0:1] show1; /*verilator lint_off LITENDIAN*/ reg [0:2] ign2; /*verilator lint_on LITENDIAN*/ reg [0:3] show3; | ^ %Error: Exiting due to