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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:50 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:50 +0000 |
commit | 2e00214b3efbdfeefaa0fe9e8b8fd519de7adc35 (patch) | |
tree | d325add32978dbdc1db975a438b3a77d571b1ab8 /tests/ui/mir/field-projection-mutating-context2.rs | |
parent | Releasing progress-linux version 1.68.2+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-2e00214b3efbdfeefaa0fe9e8b8fd519de7adc35.tar.xz rustc-2e00214b3efbdfeefaa0fe9e8b8fd519de7adc35.zip |
Merging upstream version 1.69.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/mir/field-projection-mutating-context2.rs')
-rw-r--r-- | tests/ui/mir/field-projection-mutating-context2.rs | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/tests/ui/mir/field-projection-mutating-context2.rs b/tests/ui/mir/field-projection-mutating-context2.rs new file mode 100644 index 000000000..dd9c44a16 --- /dev/null +++ b/tests/ui/mir/field-projection-mutating-context2.rs @@ -0,0 +1,17 @@ +use std::sync::Mutex; + +static GLOBAL: Mutex<&'static str> = Mutex::new("global str"); + +struct Foo<T>(T); // `T` is covariant. + +fn foo<'a>(mut x: Foo<fn(&'a str)>, string: &'a str) { + let Foo(ref mut y): Foo<fn(&'static str)> = x; + //~^ ERROR lifetime may not live long enough + *y = |s| *GLOBAL.lock().unwrap() = s; + (x.0)(&string); +} + +fn main() { + foo(Foo(|_| ()), &String::from("i am shortlived")); + println!("{}", GLOBAL.lock().unwrap()); +} |