1 files changed, 10 insertions, 0 deletions
diff --git a/tests/run-make/extern-fn-with-union/ctest.c b/tests/run-make/extern-fn-with-union/ctest.c
new file mode 100644
index 000000000..86cb64537
--- /dev/null
+++ b/tests/run-make/extern-fn-with-union/ctest.c
@@ -0,0 +1,10 @@
+#include <stdio.h>
+#include <stdint.h>
+
+typedef union TestUnion {
+    uint64_t bits;
+} TestUnion;
+
+uint64_t give_back(TestUnion tu) {
+    return tu.bits;
+}