diff --git a/test/FrontendC/2009-04-28-UnionArrayCrash.c b/test/FrontendC/2009-04-28-UnionArrayCrash.c
new file mode 100644
index 00000000000..75851d0f5c0
--- /dev/null
+++ b/test/FrontendC/2009-04-28-UnionArrayCrash.c
@@ -0,0 +1,11 @@
+// RUN: %llvmgcc -S %s -o - 
+// PR4082
+union U {
+  int I;
+  double F;
+};
+
+union U arr[] = { { .I = 4 }, { .F = 123.} };
+union U *P = &arr[0];
+
+