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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/borrowck/borrowck-object-lifetime.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/borrowck/borrowck-object-lifetime.rs')
-rw-r--r-- | src/test/ui/borrowck/borrowck-object-lifetime.rs | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/test/ui/borrowck/borrowck-object-lifetime.rs b/src/test/ui/borrowck/borrowck-object-lifetime.rs new file mode 100644 index 000000000..137a9adbc --- /dev/null +++ b/src/test/ui/borrowck/borrowck-object-lifetime.rs @@ -0,0 +1,40 @@ +// Test that borrows that occur due to calls to object methods +// properly "claim" the object path. + + + +trait Foo { + fn borrowed(&self) -> &(); + fn mut_borrowed(&mut self) -> &(); +} + +fn borrowed_receiver(x: &dyn Foo) { + let y = x.borrowed(); + let z = x.borrowed(); + z.use_ref(); + y.use_ref(); +} + +fn mut_borrowed_receiver(x: &mut dyn Foo) { + let y = x.borrowed(); + let z = x.mut_borrowed(); //~ ERROR cannot borrow + y.use_ref(); +} + +fn mut_owned_receiver(mut x: Box<dyn Foo>) { + let y = x.borrowed(); + let z = &mut x; //~ ERROR cannot borrow + y.use_ref(); +} + +fn imm_owned_receiver(mut x: Box<dyn Foo>) { + let y = x.borrowed(); + let z = &x; + z.use_ref(); + y.use_ref(); +} + +fn main() {} + +trait Fake { fn use_mut(&mut self) { } fn use_ref(&self) { } } +impl<T> Fake for T { } |