From 1b4747e77bc7e8219c7dac9119e0a309870a425b Mon Sep 17 00:00:00 2001
From: Joe Richey <joerichey@google.com>
Date: Fri, 12 Jul 2019 10:24:39 -0700
Subject: [PATCH] Update documentation to point to Rust issue

---
 README.md | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 1af0b1c2..e39e442e 100644
--- a/README.md
+++ b/README.md
@@ -35,8 +35,10 @@ libc = "0.2"
 * `extra_traits`: all `struct`s implemented in `libc` are `Copy` and `Clone`.
   This feature derives `Debug`, `Eq`, `Hash`, and `PartialEq`.
 
-* `unstable`: enable currently unstable bindings. Right now, this just allows
-  bindings to `#[thread_local]` statics on certain platforms. Requires nightly.
+* `unstable`: This feature enables `libc` bindings that are only possible with
+  unstable Rust features. Right now, this just for
+  [`extern` `#[thread_local]` statics](https://github.com/rust-lang/rust/issues/29594)
+  on certain platforms. Requires nightly.
 
 * **deprecated**: `use_std` is deprecated, and is equivalent to `std`.
 
-- 
GitLab