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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-loan-rcvr-overloaded-op.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-loan-rcvr-overloaded-op.rs')
-rw-r--r-- | src/test/ui/borrowck/borrowck-loan-rcvr-overloaded-op.rs | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/src/test/ui/borrowck/borrowck-loan-rcvr-overloaded-op.rs b/src/test/ui/borrowck/borrowck-loan-rcvr-overloaded-op.rs new file mode 100644 index 000000000..4da10fd44 --- /dev/null +++ b/src/test/ui/borrowck/borrowck-loan-rcvr-overloaded-op.rs @@ -0,0 +1,46 @@ +use std::ops::Add; + +#[derive(Copy, Clone)] +struct Point { + x: isize, + y: isize, +} + +impl Add<isize> for Point { + type Output = isize; + + fn add(self, z: isize) -> isize { + self.x + self.y + z + } +} + +impl Point { + pub fn times(&self, z: isize) -> isize { + self.x * self.y * z + } +} + +fn a() { + let mut p = Point {x: 3, y: 4}; + + // ok (we can loan out rcvr) + p + 3; + p.times(3); +} + +fn b() { + let mut p = Point {x: 3, y: 4}; + + // Here I create an outstanding loan and check that we get conflicts: + + let q = &mut p; + + p + 3; //~ ERROR cannot use `p` + p.times(3); //~ ERROR cannot borrow `p` + + *q + 3; // OK to use the new alias `q` + q.x += 1; // and OK to mutate it +} + +fn main() { +} |