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, 23 insertions, 0 deletions

diff --git a/src/test/ui/borrowck/borrowck-closures-use-after-free.rs b/src/test/ui/borrowck/borrowck-closures-use-after-free.rs
new file mode 100644
index 000000000..be5f1f873
--- /dev/null
+++ b/src/test/ui/borrowck/borrowck-closures-use-after-free.rs
@@ -0,0 +1,23 @@
+// Tests that a closure which mutates a local variable
+// cannot also be supplied a borrowed version of that
+// variable's contents. Issue #11192.
+
+struct Foo {
+  x: isize
+}
+
+impl Drop for Foo {
+  fn drop(&mut self) {
+    println!("drop {}", self.x);
+  }
+}
+
+
+
+fn main() {
+  let mut ptr: Box<_> = Box::new(Foo { x: 0 });
+  let mut test = |foo: &Foo| {
+    ptr = Box::new(Foo { x: ptr.x + 1 });
+  };
+  test(&*ptr); //~ ERROR cannot borrow `*ptr`
+}