use std::mem; | |
struct A { x: i32, y: f64 } | |
#[cfg(not(FALSE))] | |
unsafe fn access(n:*mut A) -> (i32, f64) { | |
let x : i32 = n.x; //~ no field `x` on type `*mut A` | |
let y : f64 = n.y; //~ no field `y` on type `*mut A` | |
(x, y) | |
} | |
#[cfg(FALSE)] | |
unsafe fn access(n:*mut A) -> (i32, f64) { | |
let x : i32 = (*n).x; | |
let y : f64 = (*n).y; | |
(x, y) | |
} | |
fn main() { | |
let a : A = A { x: 3, y: 3.14 }; | |
let p : &A = &a; | |
let (x,y) = unsafe { | |
let n : *mut A = mem::transmute(p); | |
access(n) | |
}; | |
println!("x: {}, y: {}", x, y); | |
} |