| //@ compile-flags: --crate-type=lib | |
| //@ check-pass | |
| #![feature(const_precise_live_drops)] | |
| // Mutable reference allows only mutation of !Drop place. | |
| pub const fn f() { | |
| let mut x: (Option<String>, u32) = (None, 0); | |
| let mut a = 10; | |
| *(&mut a) = 11; | |
| x.1 = a; | |
| } | |
| // Mutable reference allows only mutation of !Drop place. | |
| pub const fn g() { | |
| let mut a: (u32, Option<String>) = (0, None); | |
| let _ = &mut a.0; | |
| } | |
| // Shared reference does not allow for mutation. | |
| pub const fn h() { | |
| let x: Option<String> = None; | |
| let _ = &x; | |
| } |