CoAlloc: minor tidy

Author: peter-lyons-kehl

library/alloc/src/macros.rs

@@ -207,6 +207,10 @@ macro_rules! meta_num_slots_global {
 #[macro_export]
 macro_rules! meta_num_slots_default_global {
     () => {
-        if ::alloc::alloc::Global::CO_ALLOC_META_NUM_SLOTS && (DEFAULT_COOP_PREF!()) { 1 } else { 0 }
+        if ::alloc::alloc::Global::CO_ALLOC_META_NUM_SLOTS && (DEFAULT_COOP_PREF!()) {
+            1
+        } else {
+            0
+        }
     };
 }

library/alloc/src/raw_vec.rs

@@ -1,14 +1,14 @@
 #![unstable(feature = "raw_vec_internals", reason = "unstable const warnings", issue = "none")]
 
 use crate::meta_num_slots_default;
+use core::alloc::CoAllocMetaBase;
 use core::alloc::{self, LayoutError, PtrAndMeta};
 use core::cmp;
 use core::intrinsics;
 use core::mem::{self, ManuallyDrop, MaybeUninit, SizedTypeProperties};
 use core::ops::Drop;
 use core::ptr::{self, NonNull, Unique};
 use core::slice;
-use core::alloc::CoAllocMetaBase;
 
 #[cfg(not(no_global_oom_handling))]
 use crate::alloc::handle_alloc_error;
@@ -53,8 +53,11 @@ enum AllocInit {
 /// `Box<[T]>`, since `capacity()` won't yield the length.
 #[allow(missing_debug_implementations)]
 #[allow(unused_braces)] //@FIXME remove #[allow(unused_braces)] once that false positive warning fix is included on stable
-pub(crate) struct RawVec<T, A: Allocator = Global, const COOP_PREF: bool = { CO_ALLOC_PREF_DEFAULT!() }>
-where
+pub(crate) struct RawVec<
+    T,
+    A: Allocator = Global,
+    const COOP_PREF: bool = { CO_ALLOC_PREF_DEFAULT!() },
+> where
     [(); alloc::co_alloc_metadata_num_slots_with_preference::<A>(COOP_PREF)]:,
 {
     ptr: Unique<T>,
@@ -121,7 +124,7 @@ impl<T, A: Allocator, const COOP_PREF: bool> RawVec<T, A, COOP_PREF>
 where
     [(); alloc::co_alloc_metadata_num_slots_with_preference::<A>(COOP_PREF)]:,
 {
-    const fn new_plain_metas() -> [A::CoAllocMeta; {meta_num_slots_default!(A)}] {
+    const fn new_plain_metas() -> [A::CoAllocMeta; { meta_num_slots_default!(A) }] {
         loop {}
     }
 

library/core/src/alloc/global.rs

@@ -131,7 +131,7 @@ pub struct RawAndMeta<M: CoAllocMetaBase> {
 #[stable(feature = "global_alloc", since = "1.28.0")]
 pub unsafe trait GlobalAlloc {
     /// NOT for public use. The default value MAY be REMOVED or CHANGED.
-    /// 
+    ///
     /// @FIXME Validate (preferrable at compile time, otherwise as a test) that this type's
     /// alignment <= `usize` alignment.
     #[unstable(feature = "global_co_alloc_meta", issue = "none")]