| #![feature(no_core, intrinsics, staged_api, lang_items)] |
| #![no_core] |
| |
| #[lang = "sized"] |
| pub trait Sized {} |
| |
| extern "rust-intrinsic" { |
| #[rustc_const_stable(feature = "const_ptr_offset", since = "1.61.0")] |
| fn offset<T>(dst: *const T, offset: isize) -> *const T; |
| } |
| |
| #[lang = "const_ptr"] |
| impl<T> *const T { |
| pub const unsafe fn offset(self, count: isize) -> *const T { |
| unsafe { offset(self, count) } // { dg-error {unknown element size type for .const struct \*const \[i32\].} } |
| } |
| } |
| |
| fn main() { |
| let my_slice: &[i32] = &[1, 2, 3]; |
| let ptr = unsafe { (my_slice as *const [i32]).offset(0) }; |
| } |
