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, 17 insertions, 0 deletions

diff --git a/src/test/ui/once-cant-call-twice-on-heap.rs b/src/test/ui/once-cant-call-twice-on-heap.rs
new file mode 100644
index 000000000..3fd8c5cad
--- /dev/null
+++ b/src/test/ui/once-cant-call-twice-on-heap.rs
@@ -0,0 +1,17 @@
+// Testing guarantees provided by once functions.
+// This program would segfault if it were legal.
+
+use std::sync::Arc;
+
+fn foo<F:FnOnce()>(blk: F) {
+    blk();
+    blk(); //~ ERROR use of moved value
+}
+
+fn main() {
+    let x = Arc::new(true);
+    foo(move|| {
+        assert!(*x);
+        drop(x);
+    });
+}