rust/tests/run/volatile.rs

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// Compiler:
//
// Run-time:
// status: 0
use std::mem::MaybeUninit;
#[derive(Debug)]
struct Struct {
pointer: *const (),
func: unsafe fn(*const ()),
}
fn func(ptr: *const ()) {
}
fn main() {
let mut x = MaybeUninit::<&Struct>::uninit();
x.write(&Struct {
pointer: std::ptr::null(),
func,
});
let x = unsafe { x.assume_init() };
let value = unsafe { (x as *const Struct).read_volatile() };
println!("{:?}", value);
}