82 lines
2.2 KiB
Rust
82 lines
2.2 KiB
Rust
// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// compile-flags: -Z identify_regions -Z span_free_formats -Z emit-end-regions
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// ignore-tidy-linelength
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// Unwinding should EndRegion for in-scope borrows: Borrowing via by-ref closure.
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fn main() {
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let d = D(0);
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foo(|| -> i32 { d.0 });
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}
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struct D(i32);
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impl Drop for D { fn drop(&mut self) { println!("dropping D({})", self.0); } }
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fn foo<F>(f: F) where F: FnOnce() -> i32 {
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if f() > 0 { panic!("im positive"); }
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}
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// END RUST SOURCE
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// START rustc.main.SimplifyCfg-qualify-consts.after.mir
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// fn main() -> () {
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// ...
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// let mut _0: ();
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// ...
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// let _1: D;
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// ...
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// let mut _2: ();
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// let mut _3: [closure@NodeId(18) d:&'14s D];
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// let mut _4: &'14s D;
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// bb0: {
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// StorageLive(_1);
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// _1 = D::{{constructor}}(const 0i32,);
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// StorageLive(_3);
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// StorageLive(_4);
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// _4 = &'14s _1;
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// _3 = [closure@NodeId(18)] { d: _4 };
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// StorageDead(_4);
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// _2 = const foo(_3) -> [return: bb1, unwind: bb3];
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// }
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// bb1: {
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// EndRegion('14s);
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// StorageDead(_3);
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// _0 = ();
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// drop(_1) -> bb4;
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// }
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// bb2: {
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// resume;
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// }
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// bb3: {
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// EndRegion('14s);
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// drop(_1) -> bb2;
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// }
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// bb4: {
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// StorageDead(_1);
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// return;
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// }
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// }
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// END rustc.main.SimplifyCfg-qualify-consts.after.mir
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// START rustc.main-{{closure}}.SimplifyCfg-qualify-consts.after.mir
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// fn main::{{closure}}(_1: [closure@NodeId(18) d:&'14s D]) -> i32 {
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// let mut _0: i32;
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// let mut _2: i32;
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//
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// bb0: {
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// StorageLive(_2);
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// _2 = ((*(_1.0: &'14s D)).0: i32);
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// _0 = _2;
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// StorageDead(_2);
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// return;
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// }
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// END rustc.main-{{closure}}.SimplifyCfg-qualify-consts.after.mir
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