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-rw-r--r--src/libstd/sys/sgx/waitqueue.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libstd/sys/sgx/waitqueue.rs b/src/libstd/sys/sgx/waitqueue.rs
index a4738208778..51c00a1433e 100644
--- a/src/libstd/sys/sgx/waitqueue.rs
+++ b/src/libstd/sys/sgx/waitqueue.rs
@@ -456,6 +456,7 @@ mod spin_mutex {
         }
     }
 
+    /// Lock the Mutex or return false.
     pub macro try_lock_or_false {
         ($e:expr) => {
             if let Some(v) = $e.try_lock() {