mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-27 01:04:03 +00:00
38 lines
1.2 KiB
Rust
38 lines
1.2 KiB
Rust
//@ run-pass
|
|
//@ aux-build:const_mut_refs_crate.rs
|
|
|
|
#![feature(const_mut_refs)]
|
|
|
|
//! Regression test for https://github.com/rust-lang/rust/issues/79738
|
|
//! Show how we are not duplicating allocations anymore. Statics that
|
|
//! copy their value from another static used to also duplicate
|
|
//! memory behind references.
|
|
|
|
extern crate const_mut_refs_crate as other;
|
|
|
|
use other::{
|
|
inner::{INNER_MOD_BAR, INNER_MOD_FOO},
|
|
BAR, FOO,
|
|
};
|
|
|
|
pub static LOCAL_FOO: &'static i32 = &41;
|
|
pub static LOCAL_BAR: &'static i32 = LOCAL_FOO;
|
|
pub static mut COPY_OF_REMOTE_FOO: &'static mut i32 = unsafe { FOO };
|
|
|
|
static DOUBLE_REF: &&i32 = &&99;
|
|
static ONE_STEP_ABOVE: &i32 = *DOUBLE_REF;
|
|
static mut DOUBLE_REF_MUT: &mut &mut i32 = &mut &mut 99;
|
|
static mut ONE_STEP_ABOVE_MUT: &mut i32 = unsafe { *DOUBLE_REF_MUT };
|
|
|
|
pub fn main() {
|
|
unsafe {
|
|
assert_eq!(FOO as *const i32, BAR as *const i32);
|
|
assert_eq!(INNER_MOD_FOO as *const i32, INNER_MOD_BAR as *const i32);
|
|
assert_eq!(LOCAL_FOO as *const i32, LOCAL_BAR as *const i32);
|
|
assert_eq!(*DOUBLE_REF as *const i32, ONE_STEP_ABOVE as *const i32);
|
|
assert_eq!(*DOUBLE_REF_MUT as *mut i32, ONE_STEP_ABOVE_MUT as *mut i32);
|
|
|
|
assert_eq!(FOO as *const i32, COPY_OF_REMOTE_FOO as *const i32);
|
|
}
|
|
}
|