1 files changed, 55 insertions, 0 deletions
diff --git a/tests/ui/nll/closure-captures.rs b/tests/ui/nll/closure-captures.rs
new file mode 100644
index 000000000..16d90b971
--- /dev/null
+++ b/tests/ui/nll/closure-captures.rs
@@ -0,0 +1,55 @@
+// Some cases with closures that might be problems
+
+// Should have one error per assignment
+
+fn one_closure(x: i32) {
+    ||
+    x = 1; //~ ERROR
+    move ||
+    x = 1; //~ ERROR
+}
+
+fn two_closures(x: i32) {
+    || {
+        ||
+        x = 1; //~ ERROR
+    };
+    move || {
+        ||
+        x = 1; //~ ERROR
+    };
+}
+
+fn fn_ref<F: Fn()>(f: F) -> F { f }
+
+fn two_closures_ref_mut(mut x: i32) {
+    fn_ref(|| {
+        || //~ ERROR
+         x = 1;}
+    );
+    fn_ref(move || {
+        ||  //~ ERROR
+    x = 1;});
+}
+
+// This still gives two messages, but it requires two things to be fixed.
+fn two_closures_ref(x: i32) {
+    fn_ref(|| {
+        || //~ ERROR
+         x = 1;} //~ ERROR
+    );
+    fn_ref(move || {
+        ||  //~ ERROR
+    x = 1;}); //~ ERROR
+}
+
+fn two_closures_two_refs(x: &mut i32) {
+    fn_ref(|| {
+        || //~ ERROR
+        *x = 1;});
+    fn_ref(move || {
+        || //~ ERROR
+        *x = 1;});
+}
+
+fn main() {}