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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/borrowck/borrow-tuple-fields.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/borrowck/borrow-tuple-fields.rs')
-rw-r--r-- | tests/ui/borrowck/borrow-tuple-fields.rs | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/tests/ui/borrowck/borrow-tuple-fields.rs b/tests/ui/borrowck/borrow-tuple-fields.rs new file mode 100644 index 000000000..c628fa49e --- /dev/null +++ b/tests/ui/borrowck/borrow-tuple-fields.rs @@ -0,0 +1,43 @@ +struct Foo(Box<isize>, isize); + +struct Bar(isize, isize); + + + + + +fn main() { + let x: (Box<_>, _) = (Box::new(1), 2); + let r = &x.0; + let y = x; //~ ERROR cannot move out of `x` because it is borrowed + + r.use_ref(); + + let mut x = (1, 2); + let a = &x.0; + let b = &mut x.0; //~ ERROR cannot borrow `x.0` as mutable because it is also borrowed as + a.use_ref(); + + let mut x = (1, 2); + let a = &mut x.0; + let b = &mut x.0; //~ ERROR cannot borrow `x.0` as mutable more than once at a time + a.use_ref(); + + let x = Foo(Box::new(1), 2); + let r = &x.0; + let y = x; //~ ERROR cannot move out of `x` because it is borrowed + r.use_ref(); + + let mut x = Bar(1, 2); + let a = &x.0; + let b = &mut x.0; //~ ERROR cannot borrow `x.0` as mutable because it is also borrowed as + a.use_ref(); + + let mut x = Bar(1, 2); + let a = &mut x.0; + let b = &mut x.0; //~ ERROR cannot borrow `x.0` as mutable more than once at a time + a.use_mut(); +} + +trait Fake { fn use_mut(&mut self) { } fn use_ref(&self) { } } +impl<T> Fake for T { } |