rust-bitcoin-unsafe-fast/fuzz/fuzz_targets/bitcoin/script_bytes_to_asm_fmt.rs

use honggfuzz::fuzz;
use std::fmt;

// faster than String, we don't need to actually produce the value, just check absence of panics
struct NullWriter;

impl fmt::Write for NullWriter {
    fn write_str(&mut self, _s: &str) -> fmt::Result {
        Ok(())
    }

    fn write_char(&mut self, _c: char) -> fmt::Result {
        Ok(())
    }
}

fn do_test(data: &[u8]) {
    let mut writer = NullWriter;
    bitcoin::Script::from_bytes(data).fmt_asm(&mut writer).unwrap();
}

fn main() {
    loop {
        fuzz!(|data| {
            do_test(data);
        });
    }
}