re PR c++/48599 ([C++0x] no diagnostic for invalid use of auto with array declarator)

	PR c++/48599
	* decl.c (create_array_type_for_decl): Complain about array of auto.

From-SVN: r174257

gcc/cp/ChangeLog

 2011-05-25  Jason Merrill  <jason@redhat.com>
 
+	PR c++/48599
+	* decl.c (create_array_type_for_decl): Complain about array of auto.
+
 	PR c++/44944
 	PR c++/49156
 	* error.c (dump_template_bindings): Set processing_template_decl

gcc/cp/decl.c

@@ -7974,6 +7974,12 @@ create_array_type_for_decl (tree name, tree type, tree size)
   if (type == error_mark_node || size == error_mark_node)
     return error_mark_node;
 
+  /* 8.3.4/1: If the type of the identifier of D contains the auto
+     type-specifier, the program is ill-formed.  */
+  if (pedantic && type_uses_auto (type))
+    pedwarn (input_location, OPT_pedantic,
+	     "declaration of %qD as array of %<auto%>", name);
+
   /* If there are some types which cannot be array elements,
      issue an error-message and return.  */
   switch (TREE_CODE (type))

gcc/testsuite/ChangeLog

 2011-05-25  Jason Merrill  <jason@redhat.com>
 
+	* g++.dg/cpp0x/auto24.C: New.
+
 	* g++.dg/cpp0x/error4.C: New.
 
 	* g++.dg/cpp0x/rv-restrict.C: New.

gcc/testsuite/g++.dg/cpp0x/auto24.C

+// PR c++/48599
+// { dg-options "-std=c++0x -pedantic-errors" }
+
+int v[1];
+auto (*p)[1] = &v;		// { dg-error "array of .auto" }