1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/union-3.c b/gcc/testsuite/gcc.dg/union-3.c
new file mode 100644
index 00000000000..3e89b755afa
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/union-3.c
@@ -0,0 +1,10 @@
+/* PR target/27421 */
+/* { dg-do compile } */
+
+union A
+{
+  int i;
+  void x[1];  /* { dg-error "array of voids" } */
+};
+
+void foo(union A a) {}