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.node17.EraseRegions.after.mir
37 // fn test(_1: &ReErased mut i32) -> () {
39 // Validate(Acquire, [_1: &ReFree(DefId { krate: CrateNum(0), node: DefIndex(0:4) => validate_5/8cd878b::test[0] }, BrAnon(0)) mut i32]);
40 // Validate(Release, [_3: bool, _4: *mut i32]);
41 // _3 = const write_42(_4) -> bb1;
44 // END rustc.node17.EraseRegions.after.mir
45 // START rustc.node46.EraseRegions.after.mir
46 // fn main::{{closure}}(_1: &ReErased [closure@NodeId(46)], _2: &ReErased mut i32) -> bool {
48 // Validate(Acquire, [_1: &ReFree(DefId { krate: CrateNum(0), node: DefIndex(1:9) => validate_5/8cd878b::main[0]::{{closure}}[0] }, "BrEnv") [closure@NodeId(46)], _2: &ReFree(DefId { krate: CrateNum(0), node: DefIndex(1:9) => validate_5/8cd878b::main[0]::{{closure}}[0] }, BrAnon(1)) mut i32]);
53 // Validate(Suspend(ReScope(Node(ItemLocalId(9)))), [(*_3): i32]);
54 // _5 = &ReErased mut (*_3);
55 // Validate(Acquire, [(*_5): i32/ReScope(Node(ItemLocalId(9)))]);
56 // _4 = _5 as *mut i32 (Misc);
57 // EndRegion(ReScope(Node(ItemLocalId(9))));
59 // Validate(Release, [_0: bool, _4: *mut i32]);
60 // _0 = const write_42(_4) -> bb1;
63 // END rustc.node46.EraseRegions.after.mir