1 files changed, 12 insertions, 0 deletions
diff --git a/src/test/ui/type-alias-impl-trait/issue-96572-unconstrained-only-pattern.rs b/src/test/ui/type-alias-impl-trait/issue-96572-unconstrained-only-pattern.rs
new file mode 100644
index 00000000000..3f0445f5037
--- /dev/null
+++ b/src/test/ui/type-alias-impl-trait/issue-96572-unconstrained-only-pattern.rs
@@ -0,0 +1,12 @@
+#![feature(type_alias_impl_trait)]
+// check-pass
+
+type T = impl Copy;
+
+fn foo(foo: T) {
+    let (mut x, mut y) = foo;
+    x = 42;
+    y = "foo";
+}
+
+fn main() {}