rust/tests/compile-fail/copy_overlapping.rs

17 lines
440 B
Rust

//error-pattern: copy_nonoverlapping called on overlapping ranges
#![feature(intrinsics)]
// Directly call intrinsic to avoid debug assertions in libstd
extern "rust-intrinsic" {
fn copy_nonoverlapping<T>(src: *const T, dst: *mut T, count: usize);
}
fn main() {
let mut data = [0u8; 16];
unsafe {
let a = data.as_mut_ptr();
let b = a.wrapping_offset(1) as *mut _;
copy_nonoverlapping(a, b, 2);
}
}