re PR c++/40239 (Aggregate initialization requires copy constructor)

Fix PR c++/40239

gcc/cp/ChangeLog:
	PR c++/40239
	* typeck2.c (process_init_constructor_record):
	value-initialize members that are are not explicitely
	initialized.

gcc/testsuite/ChangeLog:
	PR c++/40239
	* g++.dg/init/aggr5.C: New test.
	* g++.dg/init/aggr5.C: New test.

From-SVN: r158066

gcc/cp/ChangeLog

+2010-04-07  Dodji Seketeli  <dodji@redhat.com>
+
+	PR c++/40239
+	* typeck2.c (process_init_constructor_record):
+	value-initialize members that are are not explicitely
+	initialized.
+
 2010-04-07  Jie Zhang  <jie@codesourcery.com>
 
 	PR c++/42556

gcc/cp/typeck2.c

@@ -1166,8 +1166,14 @@ process_init_constructor_record (tree type, tree init)
 	     for us, so build up TARGET_EXPRs.  If the type in question is
 	     a class, just build one up; if it's an array, recurse.  */
 	  if (MAYBE_CLASS_TYPE_P (TREE_TYPE (field)))
-	    next = build_functional_cast (TREE_TYPE (field), NULL_TREE,
-                                          tf_warning_or_error);
+	    {
+	      next = build_functional_cast (TREE_TYPE (field), NULL_TREE,
+					    tf_warning_or_error);
+	      /* direct-initialize the target. No temporary is going
+		  to be involved.  */
+	      if (TREE_CODE (next) == TARGET_EXPR)
+		TARGET_EXPR_DIRECT_INIT_P (next) = true;
+	    }
 	  else
 	    next = build_constructor (init_list_type_node, NULL);
 

gcc/testsuite/ChangeLog

+2010-04-07  Dodji Seketeli  <dodji@redhat.com>
+
+	PR c++/40239
+	* g++.dg/init/aggr5.C: New test.
+	* g++.dg/init/aggr5.C: New test.
+
 2010-04-07  Richard Guenther  <rguenther@suse.de>
 
 	PR tree-optimization/43270

gcc/testsuite/g++.dg/init/aggr5.C

+// Origin PR c++/40239
+// { dg-do "compile" }
+
+struct B { B() { } private: B(B const&); };
+struct A { int a; B b; };
+
+int
+main()
+{
+  A a = {0};
+}

gcc/testsuite/g++.dg/init/aggr6.C

+// Origin PR c++/40239
+// { dg-do compile }
+
+struct B { B() { } private: B(B const&); };
+struct A { int a; B b; };
+
+int
+main()
+{
+  A a = {};
+}