re PR c++/55017 ([DR 1051] [C++11] Rvalue-reference member should cause copy…

re PR c++/55017 ([DR 1051] [C++11] Rvalue-reference member should cause copy constructor to be deleted, but still declared)

	PR c++/55017
	* method.c (walk_field_subobs): Disallow copy of rvalue ref.

From-SVN: r196728

gcc/cp/ChangeLog

 2013-03-16  Jason Merrill  <jason@redhat.com>
 
+	PR c++/55017
+	* method.c (walk_field_subobs): Disallow copy of rvalue ref.
+
 	PR c++/55240
 	* parser.c (parsing_nsdmi): New.
 	* semantics.c (outer_automatic_var_p): Check it.

gcc/cp/method.c

@@ -1115,6 +1115,19 @@ walk_field_subobs (tree fields, tree fnname, special_function_kind sfk,
 			"initialize %q+#D", field);
 	    }
 	}
+      else if (sfk == sfk_copy_constructor)
+	{
+	  /* 12.8p11b5 */
+	  if (TREE_CODE (mem_type) == REFERENCE_TYPE
+	      && TYPE_REF_IS_RVALUE (mem_type))
+	    {
+	      if (diag)
+		error ("copying non-static data member %q#D of rvalue "
+		       "reference type", field);
+	      if (deleted_p)
+		*deleted_p = true;
+	    }
+	}
 
       if (!CLASS_TYPE_P (mem_type))
 	continue;

gcc/testsuite/g++.dg/cpp0x/rv-copy1.C

+// PR c++/55017
+// { dg-do compile { target c++11 } }
+
+struct S {			// { dg-error "rvalue ref" }
+  int&& rr;
+  S(int&& rr) : rr(static_cast<int&&>(rr)) {}
+};
+
+S s1(13);
+S s2 = s1;			// { dg-error "deleted" }

libstdc++-v3/ChangeLog

+2013-03-16  Jason Merrill  <jason@redhat.com>
+
+	PR c++/55017
+	* testsuite/20_util/pair/piecewise2.cc (test01): Use std::move.
+
 2013-03-16  Jonathan Wakely  <jwakely.gcc@gmail.com>
 
 	PR libstdc++/56468

libstdc++-v3/testsuite/20_util/pair/piecewise2.cc

@@ -51,7 +51,8 @@ struct Default
 void test01(std::tuple<NoCon&, NoCon&&> t1,
             std::tuple<NoCon&, NoCon&&, NoCon&> t2)
 {
-  std::pair<RefCheck1, RefCheck2>(std::piecewise_construct, t1, t2);
+  std::pair<RefCheck1, RefCheck2>(std::piecewise_construct,
+				  std::move(t1), std::move(t2));
 }
 
 void test02(std::tuple<> t1, std::tuple<int> t2)