Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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 { }