1 files changed, 5 insertions, 1 deletions
diff --git a/src/libstd/thread/mod.rs b/src/libstd/thread/mod.rs
index 7a3cbbe4562..3134a596756 100644
--- a/src/libstd/thread/mod.rs
+++ b/src/libstd/thread/mod.rs
@@ -737,6 +737,8 @@ pub fn panicking() -> bool {
 /// The thread may sleep longer than the duration specified due to scheduling
 /// specifics or platform-dependent functionality. It will never sleep less.
 ///
+/// This function is blocking, and should not be used in `async` functions.
+///
 /// # Platform-specific behavior
 ///
 /// On Unix platforms, the underlying syscall may be interrupted by a
@@ -763,6 +765,8 @@ pub fn sleep_ms(ms: u32) {
 /// The thread may sleep longer than the duration specified due to scheduling
 /// specifics or platform-dependent functionality. It will never sleep less.
 ///
+/// This function is blocking, and should not be used in `async` functions.
+///
 /// # Platform-specific behavior
 ///
 /// On Unix platforms, the underlying syscall may be interrupted by a
@@ -1272,7 +1276,7 @@ impl Thread {
     }
 
     fn cname(&self) -> Option<&CStr> {
-        self.inner.name.as_ref().map(|s| &**s)
+        self.inner.name.as_deref()
     }
 }