rust/tests/ui/lexer/lex-bad-binary-literal.rs

fn main() {
    0b121; //~ ERROR invalid digit for a base 2 literal
    0b10_10301; //~ ERROR invalid digit for a base 2 literal
    0b30; //~ ERROR invalid digit for a base 2 literal
    0b41; //~ ERROR invalid digit for a base 2 literal
    0b5; //~ ERROR invalid digit for a base 2 literal
    0b6; //~ ERROR invalid digit for a base 2 literal
    0b7; //~ ERROR invalid digit for a base 2 literal
    0b8; //~ ERROR invalid digit for a base 2 literal
    0b9; //~ ERROR invalid digit for a base 2 literal
}
Lex binary and octal literals more eagerly. Previously 0b12 was considered two tokens, 0b1 and 2, as 2 isn't a valid base 2 digit. This patch changes that to collapse them into one (and makes `0b12` etc. an error: 2 isn't a valid base 2 digit). This may break some macro invocations of macros with `tt` (or syntax extensions) that rely on adjacent digits being separate tokens and hence is a [breaking-change] The fix is to separate the tokens, e.g. `0b12` -> `0b1 2`. cc https://github.com/rust-lang/rfcs/pull/879 2015-03-30 13:27:13 +00:00			`fn main() {`
			`0b121; //~ ERROR invalid digit for a base 2 literal`
			`0b10_10301; //~ ERROR invalid digit for a base 2 literal`
			`0b30; //~ ERROR invalid digit for a base 2 literal`
			`0b41; //~ ERROR invalid digit for a base 2 literal`
			`0b5; //~ ERROR invalid digit for a base 2 literal`
			`0b6; //~ ERROR invalid digit for a base 2 literal`
			`0b7; //~ ERROR invalid digit for a base 2 literal`
			`0b8; //~ ERROR invalid digit for a base 2 literal`
			`0b9; //~ ERROR invalid digit for a base 2 literal`
			`}`