diff --git a/gcc/testsuite/rust/compile/issue-2782.rs b/gcc/testsuite/rust/compile/issue-2782.rs
new file mode 100644
index 000000000000..e199c882c868
--- /dev/null
+++ b/gcc/testsuite/rust/compile/issue-2782.rs
@@ -0,0 +1,12 @@
+#[lang = "sized"]
+pub trait Sized {}
+
+struct S<T>(T);
+
+impl S<u8> {
+    fn foo<U>() {}
+}
+
+fn main() {
+    S::foo::<i32>();
+}