Constify mem::take

nxsaken · nxsaken · commit 264c6d41aaa9 · 2025-11-09T21:52:04.000+04:00
diff --git a/library/core/src/mem/mod.rs b/library/core/src/mem/mod.rs
@@ -807,7 +807,8 @@ pub const fn swap<T>(x: &mut T, y: &mut T) {
 /// ```
 #[inline]
 #[stable(feature = "mem_take", since = "1.40.0")]
-pub fn take<T: Default>(dest: &mut T) -> T {
+#[rustc_const_unstable(feature = "const_default", issue = "143894")]
+pub const fn take<T: [const] Default>(dest: &mut T) -> T {
     replace(dest, T::default())
 }
 

Original file line number	Diff line number	Diff line change
`@@ -807,7 +807,8 @@ pub const fn swap<T>(x: &mut T, y: &mut T) {`
`807`	`807`	/// ```
`808`	`808`	`#[inline]`
`809`	`809`	`#[stable(feature = "mem_take", since = "1.40.0")]`
`810`		`-pub fn take<T: Default>(dest: &mut T) -> T {`
	`810`	`+#[rustc_const_unstable(feature = "const_default", issue = "143894")]`
	`811`	`+pub const fn take<T: [const] Default>(dest: &mut T) -> T {`
`811`	`812`	`replace(dest, T::default())`
`812`	`813`	`}`
`813`	`814`