Add impl AsMut<[u8]> for Box<str>

MatthijsKok · MatthijsKok · commit e73eea917e67 · 2025-04-03T14:18:02.000+02:00
diff --git a/library/alloc/src/boxed.rs b/library/alloc/src/boxed.rs
@@ -2057,6 +2057,13 @@ impl<T: ?Sized, A: Allocator> AsMut<T> for Box<T, A> {
     }
 }
 
+#[stable(feature = "smart_ptr_as_ref_str", since = "CURRENT_RUSTC_VERSION")]
+impl<A: Allocator> AsMut<[u8]> for Box<str, A> {
+    fn as_ref(&self) -> &[u8] {
+        (&mut **self).as_ref()
+    }
+}
+
 /* Nota bene
  *
  *  We could have chosen not to add this impl, and instead have written a

Original file line number	Diff line number	Diff line change
`@@ -2057,6 +2057,13 @@ impl<T: ?Sized, A: Allocator> AsMut<T> for Box<T, A> {`
`2057`	`2057`	`}`
`2058`	`2058`	`}`
`2059`	`2059`
	`2060`	`+#[stable(feature = "smart_ptr_as_ref_str", since = "CURRENT_RUSTC_VERSION")]`
	`2061`	`+impl<A: Allocator> AsMut<[u8]> for Box<str, A> {`
	`2062`	`+ fn as_ref(&self) -> &[u8] {`
	`2063`	`+ (&mut **self).as_ref()`
	`2064`	`+ }`
	`2065`	`+}`
	`2066`	`+`
`2060`	`2067`	`/* Nota bene`
`2061`	`2068`	`*`
`2062`	`2069`	`* We could have chosen not to add this impl, and instead have written a`