rust/tests/run-pass/ptr_offset.rs

17 lines
396 B
Rust

fn f() -> i32 { 42 }
fn main() {
let v = [1i16, 2];
let x = &v as *const [i16; 2] as *const i16;
let x = unsafe { x.offset(1) };
assert_eq!(unsafe { *x }, 2);
// fn ptr offset
unsafe {
let p = f as fn() -> i32 as usize;
let x = (p as *mut u32).offset(0) as usize;
let f: fn() -> i32 = std::mem::transmute(x);
assert_eq!(f(), 42);
}
}