fixed_time_eq causes segfault

[zzmp]

I work on a Mac OSX. It's all in asm, so I won't be too much help.

---

// test.rs

extern crate crypto="rust-crypto";

use crypto::util::fixed_time_eq;

fn main() {
  if fixed_time_eq(
    "720fc058654831694a93369422054a3c35ea8294cd34a131d192d564e9b9dfc9".as_bytes(),
    "720fc058654831694a93369422054a3c35ea8294cd34a131d192d564e9b9dfc9".as_bytes()
  ) {
    println!("I worked!")
  }
}

[1]    2266 segmentation fault  ./test

[DaGenix]

Thanks for reporting the issue! This appears to be a bug in Rust on Mac OSX. I've opened rust-lang/rust#16378 for it. I've also checked in a change that seems to fix the issue or me, and, as a bonus, its probably better code anyway. Please let me know if this fixes the problem for you.