Normalize closure signature after construction

1 files changed, 36 insertions, 0 deletions

diff --git a/src/test/ui/closures/issue-101696.rs b/src/test/ui/closures/issue-101696.rs
new file mode 100644
index 00000000000..0a358bd1643
--- /dev/null
+++ b/src/test/ui/closures/issue-101696.rs
@@ -0,0 +1,36 @@
+// check-pass
+
+use std::marker::PhantomData;
+
+#[derive(Default)]
+struct MyType<'a> {
+    field: usize,
+    _phantom: PhantomData<&'a ()>,
+}
+
+#[derive(Default)]
+struct MyTypeVariant<'a> {
+    field: usize,
+    _phantom: PhantomData<&'a ()>,
+}
+
+trait AsVariantTrait {
+    type Type;
+}
+
+impl<'a> AsVariantTrait for MyType<'a> {
+    type Type = MyTypeVariant<'a>;
+}
+
+type Variant<G> = <G as AsVariantTrait>::Type;
+
+fn foo<T: Default, F: FnOnce(T)>(f: F) {
+    let input = T::default();
+    f(input);
+}
+
+fn main() {
+    foo(|a: <MyType as AsVariantTrait>::Type| {
+        a.field;
+    });
+}