| // Copyright 2017 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| // compile-flags: -Z identify_regions -Z emit-end-regions |
| // ignore-tidy-linelength |
| |
| // Binding the borrow's subject outside the loop does not increase the |
| // scope of the borrow. |
| |
| fn main() { |
| let mut a; |
| loop { |
| a = true; |
| let b = &a; |
| if a { break; } |
| let c = &a; |
| } |
| } |
| |
| // END RUST SOURCE |
| // START rustc.main.SimplifyCfg-qualify-consts.after.mir |
| // let mut _0: (); |
| // ... |
| // let _7: &'30_3rs bool; |
| // ... |
| // let _3: &'30_1rs bool; |
| // ... |
| // let mut _1: bool; |
| // ... |
| // let mut _2: (); |
| // let mut _4: (); |
| // let mut _5: bool; |
| // let mut _6: !; |
| // bb0: { |
| // StorageLive(_1); |
| // goto -> bb1; |
| // } |
| // bb1: { |
| // falseUnwind -> [real: bb2, cleanup: bb3]; |
| // } |
| // bb2: { |
| // _1 = const true; |
| // StorageLive(_3); |
| // _3 = &'30_1rs _1; |
| // FakeRead(ForLet, _3); |
| // StorageLive(_5); |
| // _5 = _1; |
| // switchInt(move _5) -> [false: bb5, otherwise: bb4]; |
| // } |
| // bb3: { |
| // ... |
| // } |
| // bb4: { |
| // _0 = (); |
| // StorageDead(_5); |
| // EndRegion('30_1rs); |
| // StorageDead(_3); |
| // StorageDead(_1); |
| // return; |
| // } |
| // bb5: { |
| // _4 = (); |
| // StorageDead(_5); |
| // StorageLive(_7); |
| // _7 = &'30_3rs _1; |
| // FakeRead(ForLet, _7); |
| // _2 = (); |
| // EndRegion('30_3rs); |
| // StorageDead(_7); |
| // EndRegion('30_1rs); |
| // StorageDead(_3); |
| // goto -> bb1; |
| // } |
| // END rustc.main.SimplifyCfg-qualify-consts.after.mir |