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-rw-r--r--src/libstd/rt/exclusive.rs4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/libstd/rt/exclusive.rs b/src/libstd/rt/exclusive.rs
index a878066ad16..88bdb29caec 100644
--- a/src/libstd/rt/exclusive.rs
+++ b/src/libstd/rt/exclusive.rs
@@ -26,9 +26,9 @@ pub struct Exclusive<T> {
     data: UnsafeCell<T>,
 }
 
-impl<T:Send> Send for Exclusive<T> { }
+unsafe impl<T:Send> Send for Exclusive<T> { }
 
-impl<T:Send> Sync for Exclusive<T> { }
+unsafe impl<T:Send> Sync for Exclusive<T> { }
 
 /// An RAII guard returned via `lock`
 pub struct ExclusiveGuard<'a, T:'a> {