From 8ed83f4aaf75821feff3236b1c4d8d6e5302efba Mon Sep 17 00:00:00 2001
From: Ian Douglas Scott <ian@iandouglasscott.com>
Date: Thu, 29 Jun 2017 18:18:32 -0700
Subject: [PATCH] Fix Redox build, apparently broken by #42687

---
 src/libstd/sys/redox/fast_thread_local.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/libstd/sys/redox/fast_thread_local.rs b/src/libstd/sys/redox/fast_thread_local.rs
index 7dc61ce6654b..9f0eee024d56 100644
--- a/src/libstd/sys/redox/fast_thread_local.rs
+++ b/src/libstd/sys/redox/fast_thread_local.rs
@@ -57,7 +57,7 @@ impl<T> Key<T> {
     }
 }
 
-unsafe fn register_dtor(t: *mut u8, dtor: unsafe extern fn(*mut u8)) {
+pub unsafe fn register_dtor(t: *mut u8, dtor: unsafe extern fn(*mut u8)) {
     // The fallback implementation uses a vanilla OS-based TLS key to track
     // the list of destructors that need to be run for this thread. The key
     // then has its own destructor which runs all the other destructors.
@@ -115,3 +115,7 @@ pub unsafe extern fn destroy_value<T>(ptr: *mut u8) {
         ptr::drop_in_place((*ptr).inner.get());
     }
 }
+
+pub fn requires_move_before_drop() -> bool {
+    false
+}