rust/tests/ui/borrowck/borrowck-unsafe-static-mutable-borrows.rs
2024-01-07 17:29:25 +03:00

26 lines
490 B
Rust

// run-pass
// Test file taken from issue 45129 (https://github.com/rust-lang/rust/issues/45129)
struct Foo {
x: [usize; 2],
}
static mut SFOO: Foo = Foo { x: [23, 32] };
impl Foo {
fn x(&mut self) -> &mut usize {
&mut self.x[0]
}
}
fn main() {
unsafe {
let sfoo: *mut Foo = &mut SFOO;
//~^ WARN mutable reference of mutable static is discouraged [static_mut_ref]
let x = (*sfoo).x();
(*sfoo).x[1] += 1;
*x += 1;
}
}