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git.proxmox.com Git - rustc.git/blob - src/test/mir-opt/nll/region-subtyping-basic.rs
1 // Copyright 2012-2016 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 // Basic test for liveness constraints: the region (`R1`) that appears
12 // in the type of `p` includes the points after `&v[0]` up to (but not
13 // including) the call to `use_x`. The `else` branch is not included.
15 // compile-flags:-Znll -Zverbose
16 // ^^^^^^^^^ force compiler to dump more region information
20 fn use_x(_
: usize) -> bool { true }
23 let mut v
= [1, 2, 3];
34 // START rustc.main.nll.0.mir
35 // | '_#1r: {bb1[1], bb1[2], bb1[3], bb1[4], bb1[5], bb1[6], bb2[0], bb2[1]}
36 // | '_#2r: {bb1[1], bb1[2], bb1[3], bb1[4], bb1[5], bb1[6], bb2[0], bb2[1]}
37 // | '_#3r: {bb1[5], bb1[6], bb2[0], bb2[1]}
38 // END rustc.main.nll.0.mir
39 // START rustc.main.nll.0.mir
40 // let _2: &'_#2r usize;
42 // let _6: &'_#3r usize;
44 // _2 = &'_#1r _1[_3];
49 // END rustc.main.nll.0.mir