1 files changed, 50 insertions, 0 deletions
diff --git a/tests/ui/rust-2018/future-proofing-locals.rs b/tests/ui/rust-2018/future-proofing-locals.rs
new file mode 100644
index 00000000000..2c388cf3713
--- /dev/null
+++ b/tests/ui/rust-2018/future-proofing-locals.rs
@@ -0,0 +1,50 @@
+// edition:2018
+
+#![allow(non_camel_case_types)]
+#![allow(unused_imports)]
+
+mod T {
+    pub struct U;
+}
+mod x {
+    pub struct y;
+}
+
+fn type_param<T>() {
+    use T as _; //~ ERROR imports cannot refer to type parameters
+    use T::U; //~ ERROR imports cannot refer to type parameters
+    use T::*; //~ ERROR imports cannot refer to type parameters
+}
+
+fn self_import<T>() {
+    use T; //~ ERROR imports cannot refer to type parameters
+}
+
+fn let_binding() {
+    let x = 10;
+
+    use x as _; //~ ERROR imports cannot refer to local variables
+    use x::y; // OK
+    use x::*; // OK
+}
+
+fn param_binding(x: u8) {
+    use x; //~ ERROR imports cannot refer to local variables
+}
+
+fn match_binding() {
+    match 0 {
+        x => {
+            use x; //~ ERROR imports cannot refer to local variables
+        }
+    }
+}
+
+fn nested<T>() {
+    let x = 10;
+
+    use {T as _, x}; //~ ERROR imports cannot refer to type parameters
+                     //~| ERROR imports cannot refer to local variables
+}
+
+fn main() {}