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, 58 insertions, 0 deletions

diff --git a/src/test/ui/issues/issue-6892.rs b/src/test/ui/issues/issue-6892.rs
new file mode 100644
index 000000000..a361461a4
--- /dev/null
+++ b/src/test/ui/issues/issue-6892.rs
@@ -0,0 +1,58 @@
+// run-pass
+#![allow(dead_code)]
+// Ensures that destructors are run for expressions of the form "let _ = e;"
+// where `e` is a type which requires a destructor.
+
+
+struct Foo;
+struct Bar { x: isize }
+struct Baz(isize);
+enum FooBar { _Foo(Foo), _Bar(usize) }
+
+static mut NUM_DROPS: usize = 0;
+
+impl Drop for Foo {
+    fn drop(&mut self) {
+        unsafe { NUM_DROPS += 1; }
+    }
+}
+impl Drop for Bar {
+    fn drop(&mut self) {
+        unsafe { NUM_DROPS += 1; }
+    }
+}
+impl Drop for Baz {
+    fn drop(&mut self) {
+        unsafe { NUM_DROPS += 1; }
+    }
+}
+impl Drop for FooBar {
+    fn drop(&mut self) {
+        unsafe { NUM_DROPS += 1; }
+    }
+}
+
+fn main() {
+    assert_eq!(unsafe { NUM_DROPS }, 0);
+    { let _x = Foo; }
+    assert_eq!(unsafe { NUM_DROPS }, 1);
+    { let _x = Bar { x: 21 }; }
+    assert_eq!(unsafe { NUM_DROPS }, 2);
+    { let _x = Baz(21); }
+    assert_eq!(unsafe { NUM_DROPS }, 3);
+    { let _x = FooBar::_Foo(Foo); }
+    assert_eq!(unsafe { NUM_DROPS }, 5);
+    { let _x = FooBar::_Bar(42); }
+    assert_eq!(unsafe { NUM_DROPS }, 6);
+
+    { let _ = Foo; }
+    assert_eq!(unsafe { NUM_DROPS }, 7);
+    { let _ = Bar { x: 21 }; }
+    assert_eq!(unsafe { NUM_DROPS }, 8);
+    { let _ = Baz(21); }
+    assert_eq!(unsafe { NUM_DROPS }, 9);
+    { let _ = FooBar::_Foo(Foo); }
+    assert_eq!(unsafe { NUM_DROPS }, 11);
+    { let _ = FooBar::_Bar(42); }
+    assert_eq!(unsafe { NUM_DROPS }, 12);
+}