CoAlloc: Fixes

Author: peter-lyons-kehl

library/alloc/src/slice.rs

@@ -629,7 +629,7 @@ impl<T> [T] {
     #[inline]
     #[allow(unused_braces)]
     pub fn into_vec<A: Allocator>(self: Box<Self, A>) -> Vec<T, A>
-    where [(); { crate::meta_num_slots!(A, CO_ALLOC_PREF) }]:
+    where [(); { crate::meta_num_slots_default!(A) }]:
     {
         // N.B., see the `hack` module in this file for more details.
         hack::into_vec(self)
@@ -986,15 +986,15 @@ where
 #[cfg(not(no_global_oom_handling))]
 #[allow(unused_braces)]
 pub(crate) trait SpecCloneIntoVec<T, A: Allocator>
-where [(); { crate::meta_num_slots!(A, CO_ALLOC_PREF) }]:
+where [(); { crate::meta_num_slots_default!(A) }]:
 {
     fn clone_into(&self, target: &mut Vec<T, A>);
 }
 
 #[cfg(not(no_global_oom_handling))]
 #[allow(unused_braces)]
 impl<T: Clone, A: Allocator> SpecCloneIntoVec<T, A> for [T]
-where [(); { crate::meta_num_slots!(A, CO_ALLOC_PREF) }]:
+where [(); { crate::meta_num_slots_default!(A) }]:
 {
     default fn clone_into(&self, target: &mut Vec<T, A>) {
         // drop anything in target that will not be overwritten
@@ -1013,7 +1013,7 @@ where [(); { crate::meta_num_slots!(A, CO_ALLOC_PREF) }]:
 #[cfg(not(no_global_oom_handling))]
 #[allow(unused_braces)]
 impl<T: Copy, A: Allocator> SpecCloneIntoVec<T, A> for [T]
-where [(); { crate::meta_num_slots!(A, CO_ALLOC_PREF) }]:
+where [(); { crate::meta_num_slots_default!(A) }]:
 {
     fn clone_into(&self, target: &mut Vec<T, A>) {
         target.clear();

library/std/src/io/impls.rs

@@ -420,7 +420,7 @@ where
 /// Read is implemented for `VecDeque<u8>` by consuming bytes from the front of the `VecDeque`.
 #[stable(feature = "vecdeque_read_write", since = "1.63.0")]
 #[allow(unused_braces)]
-impl<A: Allocator, const _CO_ALLOC_PREF: CoAllocPref> Read for VecDeque<u8, A, _CO_ALLOC_PREF>
+impl<A: Allocator, const CO_ALLOC_PREF: CoAllocPref> Read for VecDeque<u8, A, CO_ALLOC_PREF>
 where
     [(); { meta_num_slots!(A, CO_ALLOC_PREF) }]:,
 {
@@ -448,7 +448,7 @@ where
 /// Write is implemented for `VecDeque<u8>` by appending to the `VecDeque`, growing it as needed.
 #[stable(feature = "vecdeque_read_write", since = "1.63.0")]
 #[allow(unused_braces)]
-impl<A: Allocator, const _CO_ALLOC_PREF: CoAllocPref> Write for VecDeque<u8, A, _CO_ALLOC_PREF>
+impl<A: Allocator, const CO_ALLOC_PREF: CoAllocPref> Write for VecDeque<u8, A, CO_ALLOC_PREF>
 where
     [(); { meta_num_slots!(A, CO_ALLOC_PREF) }]:,
 {