re PR c++/46005 ([C++0x] Don't allow "auto" as the simple-type-specifier of a typedef)

	PR c++/46145
	* decl.c (grokdeclarator): Complain about auto typedef.

From-SVN: r174228

gcc/cp/ChangeLog

 2011-05-25  Jason Merrill  <jason@redhat.com>
 
+	PR c++/46145
+	* decl.c (grokdeclarator): Complain about auto typedef.
+
 	PR c++/46245
 	* decl.c (grokdeclarator): Complain later for auto parameter.
 	* pt.c (splice_late_return_type): Handle use in a template

gcc/cp/decl.c

@@ -9481,6 +9481,12 @@ grokdeclarator (const cp_declarator *declarator,
           memfn_quals = TYPE_UNQUALIFIED;
         }
 
+      if (type_uses_auto (type))
+	{
+	  error ("typedef declared %<auto%>");
+	  type = error_mark_node;
+	}
+
       if (decl_context == FIELD)
 	decl = build_lang_decl (TYPE_DECL, unqualified_id, type);
       else

gcc/testsuite/ChangeLog

 2011-05-25  Jason Merrill  <jason@redhat.com>
 
+	* g++.dg/cpp0x/auto9.C: Add typedef test.
+
 	* g++.dg/cpp0x/auto23.C: New.
 	* g++.dg/cpp0x/auto9.C: Adjust.
 

gcc/testsuite/g++.dg/cpp0x/auto9.C

@@ -119,3 +119,6 @@ H<auto> h;					// { dg-error "invalid" }
 
 void qq (auto);			// { dg-error "auto" }
 void qr (auto*);		// { dg-error "auto" }
+
+// PR c++/46145
+typedef auto autot;		// { dg-error "auto" }