1 files changed, 13 insertions, 0 deletions
diff --git a/tests/ui/abi/extern/extern-pass-double.rs b/tests/ui/abi/extern/extern-pass-double.rs
new file mode 100644
index 000000000..0b556c99e
--- /dev/null
+++ b/tests/ui/abi/extern/extern-pass-double.rs
@@ -0,0 +1,13 @@
+// run-pass
+// ignore-wasm32-bare no libc for ffi testing
+
+#[link(name = "rust_test_helpers", kind = "static")]
+extern "C" {
+    pub fn rust_dbg_extern_identity_double(v: f64) -> f64;
+}
+
+pub fn main() {
+    unsafe {
+        assert_eq!(22.0_f64, rust_dbg_extern_identity_double(22.0_f64));
+    }
+}