1 files changed, 33 insertions, 0 deletions
diff --git a/src/test/ui/extern/extern-types-unsized.rs b/src/test/ui/extern/extern-types-unsized.rs
new file mode 100644
index 000000000..94a222a7e
--- /dev/null
+++ b/src/test/ui/extern/extern-types-unsized.rs
@@ -0,0 +1,33 @@
+// Make sure extern types are !Sized.
+
+#![feature(extern_types)]
+
+extern "C" {
+    type A;
+}
+
+struct Foo {
+    x: u8,
+    tail: A,
+}
+
+struct Bar<T: ?Sized> {
+    x: u8,
+    tail: T,
+}
+
+fn assert_sized<T>() {}
+
+fn main() {
+    assert_sized::<A>();
+    //~^ ERROR the size for values of type
+
+    assert_sized::<Foo>();
+    //~^ ERROR the size for values of type
+
+    assert_sized::<Bar<A>>();
+    //~^ ERROR the size for values of type
+
+    assert_sized::<Bar<Bar<A>>>();
+    //~^ ERROR the size for values of type
+}