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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/ui/closures/2229_closure_analysis/run_pass/box.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/closures/2229_closure_analysis/run_pass/box.rs')
-rw-r--r-- | tests/ui/closures/2229_closure_analysis/run_pass/box.rs | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/tests/ui/closures/2229_closure_analysis/run_pass/box.rs b/tests/ui/closures/2229_closure_analysis/run_pass/box.rs new file mode 100644 index 000000000..73aca288f --- /dev/null +++ b/tests/ui/closures/2229_closure_analysis/run_pass/box.rs @@ -0,0 +1,92 @@ +// edition:2021 +// run-pass + +// Test precise capture when using boxes + +struct MetaData { x: String, name: String } +struct Data { m: MetaData } +struct BoxedData(Box<Data>); +struct EvenMoreBoxedData(Box<BoxedData>); + +// Mutate disjoint paths, one inside one outside the closure +fn box_1() { + let m = MetaData { x: format!("x"), name: format!("name") }; + let d = Data { m }; + let b = BoxedData(Box::new(d)); + let mut e = EvenMoreBoxedData(Box::new(b)); + + let mut c = || { + e.0.0.m.x = format!("not-x"); + }; + + e.0.0.m.name = format!("not-name"); + c(); +} + +// Mutate a path inside the closure and read a disjoint path outside the closure +fn box_2() { + let m = MetaData { x: format!("x"), name: format!("name") }; + let d = Data { m }; + let b = BoxedData(Box::new(d)); + let mut e = EvenMoreBoxedData(Box::new(b)); + + let mut c = || { + e.0.0.m.x = format!("not-x"); + }; + + println!("{}", e.0.0.m.name); + c(); +} + +// Read a path inside the closure and mutate a disjoint path outside the closure +fn box_3() { + let m = MetaData { x: format!("x"), name: format!("name") }; + let d = Data { m }; + let b = BoxedData(Box::new(d)); + let mut e = EvenMoreBoxedData(Box::new(b)); + + let c = || { + println!("{}", e.0.0.m.name); + }; + + e.0.0.m.x = format!("not-x"); + c(); +} + +// Read disjoint paths, one inside the closure and one outside the closure. +fn box_4() { + let m = MetaData { x: format!("x"), name: format!("name") }; + let d = Data { m }; + let b = BoxedData(Box::new(d)); + let e = EvenMoreBoxedData(Box::new(b)); + + let c = || { + println!("{}", e.0.0.m.name); + }; + + println!("{}", e.0.0.m.x); + c(); +} + +// Read the same path, once inside the closure and once outside the closure. +fn box_5() { + let m = MetaData { x: format!("x"), name: format!("name") }; + let d = Data { m }; + let b = BoxedData(Box::new(d)); + let e = EvenMoreBoxedData(Box::new(b)); + + let c = || { + println!("{}", e.0.0.m.name); + }; + + println!("{}", e.0.0.m.name); + c(); +} + +fn main() { + box_1(); + box_2(); + box_3(); + box_4(); + box_5(); +} |