Fixing A and COOP_PREFERRED generics. WIP.

Author: peter-lyons-kehl

library/alloc/src/collections/vec_deque/spec_from_iter.rs

@@ -1,5 +1,5 @@
 use super::{IntoIter, VecDeque};
-use crate::Global;
+use crate::alloc::Global;
 use core::alloc;
 
 /// Specialization trait used for `VecDeque::from_iter`

library/alloc/src/ffi/c_str.rs

@@ -17,7 +17,7 @@ use core::ptr;
 use core::slice;
 use core::slice::memchr;
 use core::str::{self, Utf8Error};
-use crate::Global;
+use crate::alloc::Global;
 use crate::DEFAULT_COOP_PREFERRED;
 
 #[cfg(target_has_atomic = "ptr")]

library/alloc/src/slice.rs

@@ -454,11 +454,14 @@ impl<T> [T] {
     #[rustc_conversion_suggestion]
     #[stable(feature = "rust1", since = "1.0.0")]
     #[inline]
-    pub fn to_vec(&self) -> Vec<T>
+    pub fn to_vec<const COOP_PREFERRED: bool>(&self) -> Vec<T, Global, COOP_PREFERRED>
     where
         T: Clone,
+        [(); core::alloc::co_alloc_metadata_num_slots_with_preference::<Global>(
+            COOP_PREFERRED,
+        )]:,
     {
-        self.to_vec_in(Global)
+        self.to_vec_in::<Global, COOP_PREFERRED>(Global)
     }
 
     /// Copies `self` into a new `Vec` with an allocator.

library/alloc/src/vec/spec_from_iter_nested.rs

@@ -4,7 +4,7 @@ use core::iter::TrustedLen;
 use core::ptr;
 
 use crate::raw_vec::RawVec;
-use crate::Global;
+use crate::alloc::Global;
 use crate::DEFAULT_COOP_PREFERRED;
 
 use super::{SpecExtend, Vec};