Change ~const to [const]

Author: estebank

library/core/src/cell.rs

@@ -334,7 +334,7 @@ impl<T: Copy> Clone for Cell<T> {
 
 #[stable(feature = "rust1", since = "1.0.0")]
 #[rustc_const_unstable(feature = "const_default", issue = "67792")]
-impl<T: ~const Default> const Default for Cell<T> {
+impl<T: [const] Default> const Default for Cell<T> {
     /// Creates a `Cell<T>`, with the `Default` value for T.
     #[inline]
     fn default() -> Cell<T> {
@@ -1328,7 +1328,7 @@ impl<T: Clone> Clone for RefCell<T> {
 
 #[stable(feature = "rust1", since = "1.0.0")]
 #[rustc_const_unstable(feature = "const_default", issue = "67792")]
-impl<T: ~const Default> const Default for RefCell<T> {
+impl<T: [const] Default> const Default for RefCell<T> {
     /// Creates a `RefCell<T>`, with the `Default` value for T.
     #[inline]
     fn default() -> RefCell<T> {
@@ -2336,7 +2336,7 @@ impl<T: ?Sized> UnsafeCell<T> {
 
 #[stable(feature = "unsafe_cell_default", since = "1.10.0")]
 #[rustc_const_unstable(feature = "const_default", issue = "67792")]
-impl<T: ~const Default> const Default for UnsafeCell<T> {
+impl<T: [const] Default> const Default for UnsafeCell<T> {
     /// Creates an `UnsafeCell`, with the `Default` value for T.
     fn default() -> UnsafeCell<T> {
         UnsafeCell::new(Default::default())
@@ -2444,7 +2444,7 @@ impl<T: ?Sized> SyncUnsafeCell<T> {
 
 #[unstable(feature = "sync_unsafe_cell", issue = "95439")]
 #[rustc_const_unstable(feature = "const_default", issue = "67792")]
-impl<T: ~const Default> const Default for SyncUnsafeCell<T> {
+impl<T: [const] Default> const Default for SyncUnsafeCell<T> {
     /// Creates an `SyncUnsafeCell`, with the `Default` value for T.
     fn default() -> SyncUnsafeCell<T> {
         SyncUnsafeCell::new(Default::default())