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//@ run-pass
#![allow(dead_code)]
struct Rec {
f: Box<isize>,
}
struct Outer {
f: Inner
}
struct Inner {
g: Innermost
}
struct Innermost {
h: Box<isize>,
}
fn borrow(_v: &isize) {}
fn box_mut(v: &mut Box<isize>) {
borrow(&**v); // OK: &mut -> &imm
}
fn box_mut_rec(v: &mut Rec) {
borrow(&*v.f); // OK: &mut -> &imm
}
fn box_mut_recs(v: &mut Outer) {
borrow(&*v.f.g.h); // OK: &mut -> &imm
}
fn box_imm(v: &Box<isize>) {
borrow(&**v); // OK
}
fn box_imm_rec(v: &Rec) {
borrow(&*v.f); // OK
}
fn box_imm_recs(v: &Outer) {
borrow(&*v.f.g.h); // OK
}
pub fn main() {
}
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