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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-uniq-via-lend.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-uniq-via-lend.rs')
-rw-r--r-- | src/test/ui/borrowck/borrowck-uniq-via-lend.rs | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/src/test/ui/borrowck/borrowck-uniq-via-lend.rs b/src/test/ui/borrowck/borrowck-uniq-via-lend.rs new file mode 100644 index 000000000..25d3e0b54 --- /dev/null +++ b/src/test/ui/borrowck/borrowck-uniq-via-lend.rs @@ -0,0 +1,61 @@ +fn borrow(_v: &isize) {} + + + + + +fn local() { + let mut v: Box<_> = Box::new(3); + borrow(&*v); +} + +fn local_rec() { + struct F { f: Box<isize> } + let mut v = F {f: Box::new(3)}; + borrow(&*v.f); +} + +fn local_recs() { + struct F { f: G } + struct G { g: H } + struct H { h: Box<isize> } + let mut v = F {f: G {g: H {h: Box::new(3)}}}; + borrow(&*v.f.g.h); +} + +fn aliased_imm() { + let mut v: Box<_> = Box::new(3); + let w = &v; + borrow(&*v); + w.use_ref(); +} + +fn aliased_mut() { + let mut v: Box<_> = Box::new(3); + let w = &mut v; + borrow(&*v); //~ ERROR cannot borrow `*v` + w.use_mut(); +} + +fn aliased_other() { + let mut v: Box<_> = Box::new(3); + let mut w: Box<_> = Box::new(4); + let x = &mut w; + borrow(&*v); + x.use_mut(); +} + +fn aliased_other_reassign() { + let mut v: Box<_> = Box::new(3); + let mut w: Box<_> = Box::new(4); + let mut x = &mut w; + x = &mut v; + borrow(&*v); //~ ERROR cannot borrow `*v` + x.use_mut(); +} + +fn main() { +} + +trait Fake { fn use_mut(&mut self) { } fn use_ref(&self) { } } +impl<T> Fake for T { } |