1 files changed, 26 insertions, 0 deletions
diff --git a/tests/ui/abi/extern/extern-pass-TwoU64s.rs b/tests/ui/abi/extern/extern-pass-TwoU64s.rs
new file mode 100644
index 000000000..8bbc987c8
--- /dev/null
+++ b/tests/ui/abi/extern/extern-pass-TwoU64s.rs
@@ -0,0 +1,26 @@
+// run-pass
+#![allow(improper_ctypes)]
+
+// ignore-wasm32-bare no libc for ffi testing
+
+// Test a foreign function that accepts and returns a struct
+// by value.
+
+#[derive(Copy, Clone, PartialEq, Debug)]
+pub struct TwoU64s {
+    one: u64,
+    two: u64,
+}
+
+#[link(name = "rust_test_helpers", kind = "static")]
+extern "C" {
+    pub fn rust_dbg_extern_identity_TwoU64s(v: TwoU64s) -> TwoU64s;
+}
+
+pub fn main() {
+    unsafe {
+        let x = TwoU64s { one: 22, two: 23 };
+        let y = rust_dbg_extern_identity_TwoU64s(x);
+        assert_eq!(x, y);
+    }
+}