re PR c++/29039 (implicitly defined constructor for class with reference member)

	PR c++/29039
	* typeck2.c (build_functional_cast): Don't zero-initialize
	non-PODs; instead, call their constructors.
	* method.c (synthesize_method): Always build mem-initializers, if
	we're synthesizing the default constructor.
	PR c++/29039
	* g++.dg/init/ctor8.C: New test.

From-SVN: r117834

gcc/cp/ChangeLog

 2006-10-17  Mark Mitchell  <mark@codesourcery.com>
 
+	PR c++/29039
+	* typeck2.c (build_functional_cast): Don't zero-initialize
+	non-PODs; instead, call their constructors.
+	* method.c (synthesize_method): Always build mem-initializers, if
+	we're synthesizing the default constructor.
+
+2006-10-17  Mark Mitchell  <mark@codesourcery.com>
+
 	PR c++/27270
 	* decl.c (reshape_init_class): Move check for designated
 	to ...

gcc/cp/method.c

@@ -784,7 +784,7 @@ synthesize_method (tree fndecl)
       tree arg_chain = FUNCTION_FIRST_USER_PARMTYPE (fndecl);
       if (arg_chain != void_list_node)
 	do_build_copy_constructor (fndecl);
-      else if (TYPE_NEEDS_CONSTRUCTING (current_class_type))
+      else
 	finish_mem_initializers (NULL_TREE);
     }
 

gcc/cp/typeck2.c

@@ -1333,9 +1333,9 @@ build_functional_cast (tree exp, tree parms)
   if (parms && TREE_CHAIN (parms) == NULL_TREE)
     return build_c_cast (type, TREE_VALUE (parms));
 
-  /* We need to zero-initialize POD types.  Let's do that for everything
-     that doesn't need a constructor.  */
-  if (parms == NULL_TREE && !TYPE_NEEDS_CONSTRUCTING (type)
+  /* We need to zero-initialize POD types.  */
+  if (parms == NULL_TREE 
+      && !CLASSTYPE_NON_POD_P (type)
       && TYPE_HAS_DEFAULT_CONSTRUCTOR (type))
     {
       exp = build_constructor (type, NULL);

gcc/testsuite/ChangeLog

 2006-10-17  Mark Mitchell  <mark@codesourcery.com>
 
+	PR c++/29039
+	* g++.dg/init/ctor8.C: New test.
+	
+2006-10-17  Mark Mitchell  <mark@codesourcery.com>
+
 	PR c++/27270
 	* g++.dg/ext/complit8.C: Tweak error markers.
 	* g++.dg/template/complit1.C: Add error marker.

gcc/testsuite/g++.dg/init/ctor8.C

+// PR c++/29039
+
+typedef struct S { // { dg-error "reference" }
+  int &r; 
+};
+
+S f () {
+  return S (); // { dg-error "synthesized" }
+}
+
+