1 // Copyright 2017 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 // ignore-tidy-linelength
12 // compile-flags: -Z verbose -Z mir-emit-validate=2 -Z span_free_formats
14 // Make sure unsafe fns and fns with an unsafe block still get full validation.
16 unsafe fn write_42(x: *mut i32) -> bool {
21 fn test(x: &mut i32) {
22 unsafe { write_42(x) };
28 let test_closure = unsafe { |x: &mut i32| write_42(x) };
29 // Note that validation will fail if this is executed: The closure keeps the lock on
30 // x, so the write in write_42 fails. This test just checks code generation,
31 // so the UB doesn't matter.
36 // START rustc.test.EraseRegions.after.mir
37 // fn test(_1: &ReErased mut i32) -> () {
40 // Validate(Acquire, [_1: &ReFree(DefId { krate: CrateNum(0), index: DefIndex(0:4) => validate_5[317d]::test[0] }, BrAnon(0)) mut i32]);
42 // Validate(Release, [_2: bool, _3: *mut i32]);
43 // _2 = const write_42(_3) -> bb1;
47 // END rustc.test.EraseRegions.after.mir
48 // START rustc.main.{{closure}}.EraseRegions.after.mir
49 // fn main::{{closure}}(_1: &ReErased [closure@NodeId(46)], _2: &ReErased mut i32) -> bool {
52 // Validate(Acquire, [_1: &ReFree(DefId { krate: CrateNum(0), index: DefIndex(1:9) => validate_5[317d]::main[0]::{{closure}}[0] }, BrEnv) [closure@NodeId(46)], _2: &ReFree(DefId { krate: CrateNum(0), index: DefIndex(1:9) => validate_5[317d]::main[0]::{{closure}}[0] }, BrAnon(0)) mut i32]);
55 // Validate(Suspend(ReScope(Node(ItemLocalId(9)))), [(*_2): i32]);
56 // _4 = &ReErased mut (*_2);
57 // Validate(Acquire, [(*_4): i32/ReScope(Node(ItemLocalId(9)))]);
58 // _3 = _4 as *mut i32 (Misc);
59 // EndRegion(ReScope(Node(ItemLocalId(9))));
61 // Validate(Release, [_0: bool, _3: *mut i32]);
62 // _0 = const write_42(_3) -> bb1;
66 // END rustc.main.{{closure}}.EraseRegions.after.mir