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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:43 +0000 |
commit | 3e3e70d529d8c7d7c4d7bc4fefc9f109393b9245 (patch) | |
tree | daf049b282ab10e8c3d03e409b3cd84ff3f7690c /tests/ui/mir/field-projection-mutating-context.rs | |
parent | Adding debian version 1.68.2+dfsg1-1. (diff) | |
download | rustc-3e3e70d529d8c7d7c4d7bc4fefc9f109393b9245.tar.xz rustc-3e3e70d529d8c7d7c4d7bc4fefc9f109393b9245.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-context.rs')
-rw-r--r-- | tests/ui/mir/field-projection-mutating-context.rs | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tests/ui/mir/field-projection-mutating-context.rs b/tests/ui/mir/field-projection-mutating-context.rs new file mode 100644 index 000000000..a1002c088 --- /dev/null +++ b/tests/ui/mir/field-projection-mutating-context.rs @@ -0,0 +1,19 @@ +use std::sync::Mutex; + +static GLOBAL: Mutex<&'static str> = Mutex::new("global str"); + +struct Foo<T>(T); // `T` is covariant. + +fn foo() { + let mut x: Foo<for<'a> fn(&'a str)> = Foo(|_| ()); + let Foo(ref mut y): Foo<fn(&'static str)> = x; + //~^ ERROR mismatched types + *y = |s| *GLOBAL.lock().unwrap() = s; + let string = String::from("i am shortlived"); + (x.0)(&string); +} + +fn main() { + foo(); + println!("{}", GLOBAL.lock().unwrap()); +} |