+// 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 TwoU32s {
+ one: u32, two: u32
+}
+
+#[link(name = "rust_test_helpers", kind = "static")]
+extern {
+ pub fn rust_dbg_extern_identity_TwoU32s(v: TwoU32s) -> TwoU32s;
+}
+
+pub fn main() {
+ unsafe {
+ let x = TwoU32s {one: 22, two: 23};
+ let y = rust_dbg_extern_identity_TwoU32s(x);
+ assert_eq!(x, y);
+ }
+}