From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:19:13 +0200
Subject: Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 tests/ui/closures/closure-immutable-outer-variable.rs | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 tests/ui/closures/closure-immutable-outer-variable.rs

(limited to 'tests/ui/closures/closure-immutable-outer-variable.rs')

diff --git a/tests/ui/closures/closure-immutable-outer-variable.rs b/tests/ui/closures/closure-immutable-outer-variable.rs
new file mode 100644
index 000000000..50ec1c614
--- /dev/null
+++ b/tests/ui/closures/closure-immutable-outer-variable.rs
@@ -0,0 +1,13 @@
+// run-rustfix
+
+// Point at the captured immutable outer variable
+
+fn foo(mut f: Box<dyn FnMut()>) {
+    f();
+}
+
+fn main() {
+    let y = true;
+    foo(Box::new(move || y = !y) as Box<_>);
+    //~^ ERROR cannot assign to `y`, as it is not declared as mutable
+}
-- 
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