What version are you using?

All versions through at least 25.3.0.

What did you do?

Generated Rust bindings from a Wasm contract containing invalid UTF-8 bytes (or invalid Rust identifiers) in ScSpec entry names (function names, type names, field names).

Minimal reproduction as a test:

#[test]
#[should_panic]
fn test_invalid_utf8() {
    use stellar_xdr::curr::{ScSpecUdtStructV0, StringM, VecM};
    let spec = ScSpecUdtStructV0 {
        doc: "".try_into().unwrap(),
        lib: "".try_into().unwrap(),
        name: StringM::try_from(vec![0xff, 0xfe]).unwrap(), // invalid UTF-8
        fields: VecM::default(),
    };
    types::generate_struct(&spec); // panics
}

What did you expect to see?

The generator returns an error when spec entries contain invalid UTF-8 or names that cannot form valid Rust identifiers.

What did you see instead?

The generator panics (via unwrap() or format_ident!), crashing the tool or process.