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, 31 insertions, 0 deletions

diff --git a/src/test/ui/resource-destruct.rs b/src/test/ui/resource-destruct.rs
new file mode 100644
index 000000000..c4756a21a
--- /dev/null
+++ b/src/test/ui/resource-destruct.rs
@@ -0,0 +1,31 @@
+// run-pass
+
+#![allow(non_camel_case_types)]
+use std::cell::Cell;
+
+struct shrinky_pointer<'a> {
+  i: &'a Cell<isize>,
+}
+
+impl<'a> Drop for shrinky_pointer<'a> {
+    fn drop(&mut self) {
+        println!("Hello!"); self.i.set(self.i.get() - 1);
+    }
+}
+
+impl<'a> shrinky_pointer<'a> {
+    pub fn look_at(&self) -> isize { return self.i.get(); }
+}
+
+fn shrinky_pointer(i: &Cell<isize>) -> shrinky_pointer {
+    shrinky_pointer {
+        i: i
+    }
+}
+
+pub fn main() {
+    let my_total = &Cell::new(10);
+    { let pt = shrinky_pointer(my_total); assert_eq!(pt.look_at(), 10); }
+    println!("my_total = {}", my_total.get());
+    assert_eq!(my_total.get(), 9);
+}