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