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, 38 insertions, 0 deletions

diff --git a/src/test/ui/unboxed-closures/unboxed-closure-illegal-move.rs b/src/test/ui/unboxed-closures/unboxed-closure-illegal-move.rs
new file mode 100644
index 000000000..ed8d72114
--- /dev/null
+++ b/src/test/ui/unboxed-closures/unboxed-closure-illegal-move.rs
@@ -0,0 +1,38 @@
+#![feature(unboxed_closures)]
+
+// Tests that we can't move out of an unboxed closure environment
+// if the upvar is captured by ref or the closure takes self by
+// reference.
+
+fn to_fn<A,F:Fn<A>>(f: F) -> F { f }
+fn to_fn_mut<A,F:FnMut<A>>(f: F) -> F { f }
+fn to_fn_once<A,F:FnOnce<A>>(f: F) -> F { f }
+
+fn main() {
+    // By-ref cases
+    {
+        let x = Box::new(0);
+        let f = to_fn(|| drop(x)); //~ ERROR cannot move
+    }
+    {
+        let x = Box::new(0);
+        let f = to_fn_mut(|| drop(x)); //~ ERROR cannot move
+    }
+    {
+        let x = Box::new(0);
+        let f = to_fn_once(|| drop(x)); // OK -- FnOnce
+    }
+    // By-value cases
+    {
+        let x = Box::new(0);
+        let f = to_fn(move || drop(x)); //~ ERROR cannot move
+    }
+    {
+        let x = Box::new(0);
+        let f = to_fn_mut(move || drop(x)); //~ ERROR cannot move
+    }
+    {
+        let x = Box::new(0);
+        let f = to_fn_once(move || drop(x)); // this one is ok
+    }
+}