Make clone do a volatile read

Author: phil-opp

src/lib.rs

@@ -34,7 +34,7 @@ use core::ptr;
 /// take and return copies of the value.
 ///
 /// The size of this struct is the same as the size of the contained type.
-#[derive(Debug, Clone)]
+#[derive(Debug)]
 pub struct Volatile<T: Copy>(T);
 
 impl<T: Copy> Volatile<T> {
@@ -140,6 +140,12 @@ impl<T: Copy> Volatile<T> {
     }
 }
 
+impl<T: Copy> Clone for Volatile<T> {
+    fn clone(&self) -> Self {
+        Volatile(self.read())
+    }
+}
+
 /// A volatile wrapper which only allows read operations.
 ///
 /// The size of this struct is the same as the contained type.