title: What is current state of iOS support of Rust?
body: <p><a href="https://github.com/rust-lang/rust/wiki/Doc-building-for-ios" rel="noreferrer">This document</a> is saying the safe tasks are not supported on iOS target due to lack of segmented stack support. I looked into Rust's issue tracker, and this is somewhat related to thread-local-storage of 32-bit version of iOS. Well, I am not really familiar with this kind of topics. </p>
  
  <p>Anyway, <a href="https://mail.mozilla.org/pipermail/rust-dev/2013-November/006314.html" rel="noreferrer">this text</a> is saying the segmented stack approach is going to be abandoned. There's <a href="https://news.ycombinator.com/item?id=6679918" rel="noreferrer">an HN entry</a> which says it's not really required in 64-bit systems.</p>
  
  <p>I am confusing on this. What is current state of iOS support of Rust? No stack protection at all on tasks? Or protected only in 64-bit?</p>