mirror of
https://github.com/rust-lang/rust.git
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50 lines
1.4 KiB
Rust
50 lines
1.4 KiB
Rust
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// Copyright 2012-2016 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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// Basic test for liveness constraints: the region (`R1`) that appears
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// in the type of `p` includes the points after `&v[0]` up to (but not
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// including) the call to `use_x`. The `else` branch is not included.
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// compile-flags:-Znll -Zverbose
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// ^^^^^^^^^ force compiler to dump more region information
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#![allow(warnings)]
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fn use_x(_: usize) -> bool { true }
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fn main() {
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let mut v = [1, 2, 3];
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let p = &v[0];
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let q = p;
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if true {
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use_x(*q);
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} else {
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use_x(22);
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}
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}
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// END RUST SOURCE
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// START rustc.node12.nll.0.mir
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// | R0: {bb1[1], bb1[2], bb1[3], bb1[4], bb1[5], bb1[6], bb2[0], bb2[1]}
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// | R1: {bb1[1], bb1[2], bb1[3], bb1[4], bb1[5], bb1[6], bb2[0], bb2[1]}
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// | R2: {bb1[5], bb1[6], bb2[0], bb2[1]}
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// END rustc.node12.nll.0.mir
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// START rustc.node12.nll.0.mir
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// let _2: &'_#1r usize;
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// ...
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// let _6: &'_#2r usize;
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// ...
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// _2 = &'_#0r _1[_3];
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// ...
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// _7 = _2;
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// ...
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// _6 = _7;
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// END rustc.node12.nll.0.mir
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