re PR middle-end/51200 (Wrong code sequence to store restrict volatile bitfield)

2011-12-26  Joey Ye  <joey.ye@arm.com>

	PR middle-end/51200
	* gcc.dg/volatile-bitfields-2.c: New test.

From-SVN: r182685

gcc/testsuite/ChangeLog

+2011-12-26  Joey Ye  <joey.ye@arm.com>
+
+	PR middle-end/51200
+	* gcc.dg/volatile-bitfields-2.c: New test.
+
 2011-12-23  Jason Merrill  <jason@redhat.com>
 
 	PR c++/51507

gcc/testsuite/gcc.dg/volatile-bitfields-2.c

+/* { 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;
+}