2 0b121; //~ ERROR invalid digit for a base 2 literal
3 0b10_10301; //~ ERROR invalid digit for a base 2 literal
4 0b30; //~ ERROR invalid digit for a base 2 literal
5 0b41; //~ ERROR invalid digit for a base 2 literal
6 0b5; //~ ERROR invalid digit for a base 2 literal
7 0b6; //~ ERROR invalid digit for a base 2 literal
8 0b7; //~ ERROR invalid digit for a base 2 literal
9 0b8; //~ ERROR invalid digit for a base 2 literal
10 0b9; //~ ERROR invalid digit for a base 2 literal