mirror of https://github.com/rust-lang/rust
50 lines
651 B
Rust
50 lines
651 B
Rust
//@ run-pass
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#![allow(dead_code)]
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//@ pretty-expanded FIXME #23616
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struct Rec {
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f: Box<isize>,
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}
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struct Outer {
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f: Inner
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}
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struct Inner {
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g: Innermost
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}
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struct Innermost {
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h: Box<isize>,
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}
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fn borrow(_v: &isize) {}
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fn box_mut(v: &mut Box<isize>) {
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borrow(&**v); // OK: &mut -> &imm
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}
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fn box_mut_rec(v: &mut Rec) {
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borrow(&*v.f); // OK: &mut -> &imm
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}
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fn box_mut_recs(v: &mut Outer) {
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borrow(&*v.f.g.h); // OK: &mut -> &imm
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}
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fn box_imm(v: &Box<isize>) {
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borrow(&**v); // OK
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}
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fn box_imm_rec(v: &Rec) {
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borrow(&*v.f); // OK
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}
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fn box_imm_recs(v: &Outer) {
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borrow(&*v.f.g.h); // OK
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}
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pub fn main() {
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}
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