move NonNull into minicore

Author: folkertdev

tests/auxiliary/minicore.rs

@@ -119,6 +119,24 @@ pub struct ManuallyDrop<T: PointeeSized> {
 }
 impl<T: Copy + PointeeSized> Copy for ManuallyDrop<T> {}
 
+#[repr(transparent)]
+#[rustc_layout_scalar_valid_range_start(1)]
+#[rustc_nonnull_optimization_guaranteed]
+pub struct NonNull<T: ?Sized> {
+    pointer: *const T,
+}
+impl<T: ?Sized> Copy for NonNull<T> {}
+
+#[repr(transparent)]
+#[rustc_layout_scalar_valid_range_start(1)]
+#[rustc_nonnull_optimization_guaranteed]
+pub struct NonZero<T>(T);
+
+pub struct Unique<T: ?Sized> {
+    pub pointer: NonNull<T>,
+    pub _marker: PhantomData<T>,
+}
+
 #[lang = "unsafe_cell"]
 #[repr(transparent)]
 pub struct UnsafeCell<T: PointeeSized> {

tests/ui/abi/compatibility.rs

@@ -87,31 +87,13 @@ mod prelude {
         fn clone(&self) -> Self;
     }
 
-    #[repr(transparent)]
-    #[rustc_layout_scalar_valid_range_start(1)]
-    #[rustc_nonnull_optimization_guaranteed]
-    pub struct NonNull<T: ?Sized> {
-        pointer: *const T,
-    }
-    impl<T: ?Sized> Copy for NonNull<T> {}
-
-    #[repr(transparent)]
-    #[rustc_layout_scalar_valid_range_start(1)]
-    #[rustc_nonnull_optimization_guaranteed]
-    pub struct NonZero<T>(T);
-
     // This just stands in for a non-trivial type.
     pub struct Vec<T> {
         ptr: NonNull<T>,
         cap: usize,
         len: usize,
     }
 
-    pub struct Unique<T: ?Sized> {
-        pub pointer: NonNull<T>,
-        pub _marker: PhantomData<T>,
-    }
-
     #[lang = "global_alloc_ty"]
     pub struct Global;
 

tests/ui/cmse-nonsecure/cmse-nonsecure-entry/c-variadic.rs

@@ -31,9 +31,8 @@ async unsafe extern "cmse-nonsecure-entry" fn async_is_not_allowed() {
 // this file, but they may be moved into `minicore` if/when other `#[no_core]` tests want to use
 // them.
 
-// NOTE: in `core` this type uses `NonNull`.
 #[lang = "ResumeTy"]
-pub struct ResumeTy(*mut Context<'static>);
+pub struct ResumeTy(NonNull<Context<'static>>);
 
 #[lang = "future_trait"]
 pub trait Future {