| // 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 span_free_formats -Z emit-end-regions |
| |
| // Unwinding should EndRegion for in-scope borrows: Borrowing via by-ref closure. |
| |
| fn main() { |
| let d = D(0); |
| foo(|| -> i32 { d.0 }); |
| } |
| |
| struct D(i32); |
| impl Drop for D { fn drop(&mut self) { println!("dropping D({})", self.0); } } |
| |
| fn foo<F>(f: F) where F: FnOnce() -> i32 { |
| if f() > 0 { panic!("im positive"); } |
| } |
| |
| // END RUST SOURCE |
| // START rustc.main.SimplifyCfg-qualify-consts.after.mir |
| // fn main() -> () { |
| // ... |
| // let mut _0: (); |
| // ... |
| // let _1: D; |
| // ... |
| // let mut _2: (); |
| // let mut _3: [closure@NodeId(28) d:&'18s D]; |
| // let mut _4: &'18s D; |
| // bb0: { |
| // StorageLive(_1); |
| // _1 = D::{{constructor}}(const 0i32,); |
| // FakeRead(ForLet, _1); |
| // StorageLive(_3); |
| // StorageLive(_4); |
| // _4 = &'18s _1; |
| // _3 = [closure@NodeId(28)] { d: move _4 }; |
| // StorageDead(_4); |
| // _2 = const foo(move _3) -> [return: bb2, unwind: bb3]; |
| // } |
| // bb1: { |
| // resume; |
| // } |
| // bb2: { |
| // EndRegion('18s); |
| // StorageDead(_3); |
| // _0 = (); |
| // drop(_1) -> [return: bb4, unwind: bb1]; |
| // } |
| // bb3: { |
| // EndRegion('18s); |
| // drop(_1) -> bb1; |
| // } |
| // bb4: { |
| // StorageDead(_1); |
| // return; |
| // } |
| // } |
| // END rustc.main.SimplifyCfg-qualify-consts.after.mir |
| |
| // START rustc.main-{{closure}}.SimplifyCfg-qualify-consts.after.mir |
| // fn main::{{closure}}(_1: [closure@NodeId(28) d:&'18s D]) -> i32 { |
| // let mut _0: i32; |
| // |
| // bb0: { |
| // _0 = ((*(_1.0: &'18s D)).0: i32); |
| // return; |
| // } |
| // END rustc.main-{{closure}}.SimplifyCfg-qualify-consts.after.mir |