Override clone_from method for PathBuf and OsString

library/std/src/path.rs

@@ -1065,7 +1065,6 @@ impl FusedIterator for Ancestors<'_> {}
 /// ```
 ///
 /// Which method works best depends on what kind of situation you're in.
-#[derive(Clone)]
 #[cfg_attr(not(test), rustc_diagnostic_item = "PathBuf")]
 #[stable(feature = "rust1", since = "1.0.0")]
 // FIXME:
@@ -1406,6 +1405,19 @@ impl PathBuf {
     }
 }
 
+#[stable(feature = "rust1", since = "1.0.0")]
+impl Clone for PathBuf {
+    #[inline]
+    fn clone(&self) -> Self {
+        PathBuf { inner: self.inner.clone() }
+    }
+
+    #[inline]
+    fn clone_from(&mut self, source: &Self) {
+        self.inner.clone_from(&source.inner)
+    }
+}
+
 #[stable(feature = "box_from_path", since = "1.17.0")]
 impl From<&Path> for Box<Path> {
     fn from(path: &Path) -> Box<Path> {