Add AsRef implementations for Path

Author: MatthijsKok

library/std/src/path.rs

@@ -3358,6 +3358,30 @@ impl AsRef<Path> for PathBuf {
     }
 }
 
+#[stable(feature = "smart_ptr_as_ref_str", since = "CURRENT_RUSTC_VERSION")]
+impl AsRef<Path> for Box<str> {
+    #[inline]
+    fn as_ref(&self) -> &Path {
+        Path::new(self)
+    }
+}
+
+#[stable(feature = "smart_ptr_as_ref_str", since = "CURRENT_RUSTC_VERSION")]
+impl AsRef<Path> for Rc<str> {
+    #[inline]
+    fn as_ref(&self) -> &Path {
+        Path::new(self)
+    }
+}
+
+#[stable(feature = "smart_ptr_as_ref_str", since = "CURRENT_RUSTC_VERSION")]
+impl AsRef<Path> for Arc<str> {
+    #[inline]
+    fn as_ref(&self) -> &Path {
+        Path::new(self)
+    }
+}
+
 #[stable(feature = "path_into_iter", since = "1.6.0")]
 impl<'a> IntoIterator for &'a PathBuf {
     type Item = &'a OsStr;