diff --git a/llvm/test/Regression/CFrontend/2003-06-22-UnionCrash.c b/llvm/test/Regression/CFrontend/2003-06-22-UnionCrash.c
new file mode 100644
index 000000000000..e4fb3f068d3b
--- /dev/null
+++ b/llvm/test/Regression/CFrontend/2003-06-22-UnionCrash.c
@@ -0,0 +1,11 @@
+struct Blend_Map_Entry {
+  union {
+   float Colour[5];
+   double Point_Slope[2];
+  } Vals;
+};
+
+void test(struct Blend_Map_Entry* Foo)
+{
+}
+