1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/union-cast-1.c b/gcc/testsuite/gcc.dg/union-cast-1.c
new file mode 100644
index 000000000..1d7f4d549
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/union-cast-1.c
@@ -0,0 +1,14 @@
+/* { dg-do compile } */
+/* { dg-options "-std=gnu89" } */
+/* A combine of two extensions to C89 are used here.
+   First casts to unions is used.
+   Second subscripting non lvalue arrays, this is in C99. */
+
+union vx {short f[8]; int v;};
+int vec;
+
+void
+foo5 (int vec)
+{
+  ((union vx) vec).f[5] = 1;
+}