1 files changed, 17 insertions, 0 deletions
diff --git a/test/CodeGen/x86_64-arguments-darwin.c b/test/CodeGen/x86_64-arguments-darwin.c
new file mode 100644
index 0000000..2f804e6
--- /dev/null
+++ b/test/CodeGen/x86_64-arguments-darwin.c
@@ -0,0 +1,17 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -o - %s| FileCheck %s
+
+// rdar://9122143
+// CHECK: declare void @func(i64, double)
+typedef struct _str {
+  union {
+    long double a;
+    long c;
+  };
+} str;
+
+void func(str s);
+str ss;
+void f9122143()
+{
+  func(ss);
+}