error[E0658]: const generics are unstable
  --> $DIR/feature-gate-const_generics-ptr.rs:1:22
   |
LL | struct ConstFn<const F: fn()>;
   |                      ^
   |
   = note: for more information, see https://github.com/rust-lang/rust/issues/44580
   = help: add `#![feature(const_generics)]` to the crate attributes to enable

error[E0658]: const generics are unstable
  --> $DIR/feature-gate-const_generics-ptr.rs:5:23
   |
LL | struct ConstPtr<const P: *const u32>;
   |                       ^
   |
   = note: for more information, see https://github.com/rust-lang/rust/issues/44580
   = help: add `#![feature(const_generics)]` to the crate attributes to enable

error[E0658]: using function pointers as const generic parameters is unstable
  --> $DIR/feature-gate-const_generics-ptr.rs:1:25
   |
LL | struct ConstFn<const F: fn()>;
   |                         ^^^^
   |
   = note: for more information, see https://github.com/rust-lang/rust/issues/53020
   = help: add `#![feature(const_compare_raw_pointers)]` to the crate attributes to enable

error[E0658]: using raw pointers as const generic parameters is unstable
  --> $DIR/feature-gate-const_generics-ptr.rs:5:26
   |
LL | struct ConstPtr<const P: *const u32>;
   |                          ^^^^^^^^^^
   |
   = note: for more information, see https://github.com/rust-lang/rust/issues/53020
   = help: add `#![feature(const_compare_raw_pointers)]` to the crate attributes to enable

error: aborting due to 4 previous errors

For more information about this error, try `rustc --explain E0658`.