diff --git a/test/val/bug1178.c b/test/val/bug1178.c
new file mode 100644
index 000000000..043767e4c
--- /dev/null
+++ b/test/val/bug1178.c
@@ -0,0 +1,81 @@
+
+/* bug #1178 - copying structs/unions > 4 bytes is broken */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+typedef struct
+{
+    unsigned char a;
+    unsigned char b;
+    unsigned char c;
+    unsigned char d;
+    unsigned char e;
+}
+TestStruct1;
+
+TestStruct1 StructArray1[2];
+TestStruct1 test1;
+
+typedef struct
+{
+    unsigned char a;
+    unsigned char b;
+    unsigned char c;
+    unsigned char d;
+}
+TestStruct2;
+
+TestStruct2 StructArray2[2];
+TestStruct2 test2;
+
+int res = EXIT_SUCCESS;
+
+void dotest1(void)
+{
+    test1.a = 42;
+    test1.b = 11;
+    test1.c = 23;
+    test1.d = 47;
+    test1.e = 13;
+
+    StructArray1[0] = test1;
+
+    printf ("test1: %d, %d, %d, %d, %d\n", 
+            (int)StructArray1[0].a, (int)StructArray1[0].b, (int)StructArray1[0].c,
+            (int)StructArray1[0].d, (int)StructArray1[0].e);
+    if ((StructArray1[0].a != 42) ||
+        (StructArray1[0].b != 11) ||
+        (StructArray1[0].c != 23) ||
+        (StructArray1[0].d != 47) ||
+        (StructArray1[0].e != 13)) {
+        res = EXIT_FAILURE;
+    }
+}
+
+void dotest2(void)
+{
+    test2.a = 42;
+    test2.b = 11;
+    test2.c = 23;
+    test2.d = 47;
+
+    StructArray2[0] = test2;
+
+    printf ("test2: %d, %d, %d, %d, %d\n", 
+            (int)StructArray2[0].a, (int)StructArray2[0].b,
+            (int)StructArray2[0].c, (int)StructArray2[0].d);
+    if ((StructArray2[0].a != 42) ||
+        (StructArray2[0].b != 11) ||
+        (StructArray2[0].c != 23) ||
+        (StructArray2[0].d != 47)) {
+        res = EXIT_FAILURE;
+    }
+}
+
+int main(void)
+{
+    dotest1();
+    dotest2();
+    return res;
+}