--- gcc/testsuite/gcc.dg/volatile-bitfields-2.c	(revision 0)
+++ gcc/testsuite/gcc.dg/volatile-bitfields-2.c	(revision 0)
@@ -0,0 +1,15 @@
+/* { dg-do run } */
+/* { dg-options "-fstrict-volatile-bitfields" } */
+
+extern void abort(void);
+struct thing {
+  volatile unsigned short a: 8;
+  volatile unsigned short b: 8;
+} t = {1,2};
+
+int main()
+{
+  t.a = 3;
+  if (t.a !=3 || t.b !=2) abort();
+  return 0;
+}