Can't fuzz a crate that catches panic

[pedrocr]

My rawloader crate catches panic on file decode to just ignore broken files without having to rewrite all the bounds checks that rust already provides. I'd still like to fuzz it to catch hangs and other causes of crashes. It doesn't seem to be possible right now though because all panics are turned into aborts. Is there a way to avoid that?

[pedrocr]

Doing something like this fixes it:

#[macro_use]
extern crate afl;

fn main() {
  fuzz!(|data: &[u8]| {
    // Remove the panic hook so we can actually catch panic
    std::panic::set_hook(Box::new(|_| {} ));

    // Fuzz code that catches panics here
  });
}

It seems wasteful to be changing the hook on every call though. Would you take a PR to add an option to fuzz! that disables the hook?

[HeroicKatora]

No longer getting any errors with 0.4.4 with codegen-units=1 in the crate. Remember to manually update if you've added the target according to the guide since creating a bin crate does not exlude Cargo.lock.

Never mind, still present. Now I'm puzzled how it compiled once but doesn't seem to again?