re PR c++/9704 (miscompilation of classes with bit fields)

	PR c++/9704
	* class.c (layout_class_type): In the 3.2 ABI, take into account
	trailing bit fields when computing CLASSTYPE_SIZE_UNIT.

	PR c++/9704
	* g++.dg/init/copy5.C: New test.

[[Split portion of a mixed commit.]]

From-SVN: r63054.2

gcc/testsuite/g++.dg/init/copy5.C

+// { dg-options "-O2" }
+
+struct BOOL {
+    int nVal:1, bSet:1;
+    BOOL (int i) : nVal(i!=0), bSet(1) {}
+};
+struct Fill {
+    void *d;
+    Fill() : d(0) {}
+    Fill( const Fill& ) {}
+};
+struct SvMetaSlot {
+    Fill aGroupId;
+    BOOL a8;
+    SvMetaSlot() :
+      a8(1) {}
+    SvMetaSlot* MakeClone() const;
+};
+
+SvMetaSlot* SvMetaSlot::MakeClone() const { return new SvMetaSlot( *this ); }
+
+extern "C" void abort(void);
+int main()
+{
+  SvMetaSlot s; SvMetaSlot s2(s);
+  if (s.a8.bSet != s2.a8.bSet)
+    abort ();
+  return 0;
+}