1 files changed, 53 insertions, 0 deletions
diff --git a/tests/ui/nll/user-annotations/adt-tuple-enums.rs b/tests/ui/nll/user-annotations/adt-tuple-enums.rs
new file mode 100644
index 00000000000..efe8dfda191
--- /dev/null
+++ b/tests/ui/nll/user-annotations/adt-tuple-enums.rs
@@ -0,0 +1,53 @@
+// Unit test for the "user substitutions" that are annotated on each
+// node.
+
+#![allow(warnings)]
+
+enum SomeEnum<T> {
+    SomeVariant(T),
+    SomeOtherVariant,
+}
+
+fn no_annot() {
+    let c = 66;
+    SomeEnum::SomeVariant(&c);
+}
+
+fn annot_underscore() {
+    let c = 66;
+    SomeEnum::SomeVariant::<_>(&c);
+}
+
+fn annot_reference_any_lifetime() {
+    let c = 66;
+    SomeEnum::SomeVariant::<&u32>(&c);
+}
+
+fn annot_reference_static_lifetime() {
+    let c = 66;
+    SomeEnum::SomeVariant::<&'static u32>(&c); //~ ERROR
+}
+
+fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
+    let c = 66;
+    SomeEnum::SomeVariant::<&'a u32>(&c); //~ ERROR
+}
+
+fn annot_reference_named_lifetime_ok<'a>(c: &'a u32) {
+    SomeEnum::SomeVariant::<&'a u32>(c);
+}
+
+fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
+    let _closure = || {
+        let c = 66;
+        SomeEnum::SomeVariant::<&'a u32>(&c); //~ ERROR
+    };
+}
+
+fn annot_reference_named_lifetime_in_closure_ok<'a>(c: &'a u32) {
+    let _closure = || {
+        SomeEnum::SomeVariant::<&'a u32>(c);
+    };
+}
+
+fn main() { }