optimclaw/crates/ironclaw_safety/fuzz/fuzz_targets/fuzz_safety_sanitizer.rs

#![no_main]
use ironclaw_safety::{Sanitizer, Severity};
use libfuzzer_sys::fuzz_target;

fuzz_target!(|data: &[u8]| {
    if let Ok(s) = std::str::from_utf8(data) {
        let sanitizer = Sanitizer::new();

        // Exercise the main sanitization path
        let result = sanitizer.sanitize(s);
        // Verify invariant: warnings should have valid ranges
        for w in &result.warnings {
            assert!(w.location.end <= s.len());
        }
        // Verify invariant: critical severity triggers modification
        let has_critical = result.warnings.iter().any(|w| w.severity == Severity::Critical);
        if has_critical {
            assert!(result.was_modified);
        }
    }
});