rust/tests/ui/traits/fmt-pointer-trait.rs
2024-02-16 20:02:50 +00:00

25 lines
552 B
Rust

//@ run-pass
use std::ptr;
use std::rc::Rc;
use std::sync::Arc;
fn main() {
let p: *const u8 = ptr::null();
let rc = Rc::new(1usize);
let arc = Arc::new(1usize);
let b = Box::new("hi");
let _ = format!("{:p}{:p}{:p}",
rc, arc, b);
if cfg!(target_pointer_width = "32") {
assert_eq!(format!("{:#p}", p),
"0x00000000");
} else {
assert_eq!(format!("{:#p}", p),
"0x0000000000000000");
}
assert_eq!(format!("{:p}", p),
"0x0");
}