change #![feature(const_fn)] to specific gates

1 files changed, 6 insertions, 0 deletions

diff --git a/src/libcore/ptr.rs b/src/libcore/ptr.rs
index 2e42e0dfd55..20aa881f4bc 100644
--- a/src/libcore/ptr.rs
+++ b/src/libcore/ptr.rs
@@ -76,6 +76,7 @@ pub unsafe fn drop_in_place<T: ?Sized>(to_drop: *mut T) {
 /// ```
 #[inline]
 #[stable(feature = "rust1", since = "1.0.0")]
+#[cfg_attr(not(stage0), rustc_const_unstable(feature = "const_ptr_null"))]
 pub const fn null<T>() -> *const T { 0 as *const T }
 
 /// Creates a null mutable raw pointer.
@@ -90,6 +91,7 @@ pub const fn null<T>() -> *const T { 0 as *const T }
 /// ```
 #[inline]
 #[stable(feature = "rust1", since = "1.0.0")]
+#[cfg_attr(not(stage0), rustc_const_unstable(feature = "const_ptr_null_mut"))]
 pub const fn null_mut<T>() -> *mut T { 0 as *mut T }
 
 /// Swaps the values at two mutable locations of the same type, without
@@ -1097,6 +1099,8 @@ impl<T: ?Sized> Unique<T> {
     /// # Safety
     ///
     /// `ptr` must be non-null.
+    #[unstable(feature = "unique", issue = "27730")]
+    #[cfg_attr(not(stage0), rustc_const_unstable(feature = "const_unique_new"))]
     pub const unsafe fn new_unchecked(ptr: *mut T) -> Self {
         Unique { pointer: NonZero::new_unchecked(ptr), _marker: PhantomData }
     }
@@ -1230,6 +1234,8 @@ impl<T: ?Sized> Shared<T> {
     /// # Safety
     ///
     /// `ptr` must be non-null.
+    #[unstable(feature = "shared", issue = "27730")]
+    #[cfg_attr(not(stage0), rustc_const_unstable(feature = "const_shared_new"))]
     pub const unsafe fn new_unchecked(ptr: *mut T) -> Self {
         Shared { pointer: NonZero::new_unchecked(ptr), _marker: PhantomData }
     }