1 files changed, 15 insertions, 0 deletions
diff --git a/tests/ui/abi/extern/extern-pass-u64.rs b/tests/ui/abi/extern/extern-pass-u64.rs
new file mode 100644
index 000000000..5103129ab
--- /dev/null
+++ b/tests/ui/abi/extern/extern-pass-u64.rs
@@ -0,0 +1,15 @@
+// run-pass
+// ignore-wasm32-bare no libc for ffi testing
+
+// Test a call to a function that takes/returns a u64.
+
+#[link(name = "rust_test_helpers", kind = "static")]
+extern "C" {
+    pub fn rust_dbg_extern_identity_u64(v: u64) -> u64;
+}
+
+pub fn main() {
+    unsafe {
+        assert_eq!(22, rust_dbg_extern_identity_u64(22));
+    }
+}