Segfault in a user binary with broken regexes

[bluecube]

Hi, I accidentally messed up one of my regexes and the binary that uses Logos started crashing. In debug it fails with stack overflow, in debug with GDB with a segmentation fault and in release it just hangs.

The expected behavior is a nice compile time error message.

This is the (sort of) minimal example:

#[derive(Logos, Debug)]
pub enum Token {
    #[regex(r#""(?:|\\[^\n])*""#)]
    String,
    #[error]
    Error,
}

fn main() {
    let lexer = Token::lexer("\"fubar\"");
    for (tok, span) in lexer.spanned() {
        println!("{:?} ({:?})", tok, span);
    }
}

rustc 1.64.0, logos 0.12.1.