re PR objc++/53441 (obj-c++.dg/ivar-invalid-type-1.mm ICE)

	PR obj-c++/53441
	* decl.c (grokdeclarator): Check that current_class_type is non-NULL
	before calling constructor_name_p.

From-SVN: r187888

gcc/cp/ChangeLog

+2012-05-24  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR obj-c++/53441
+	* decl.c (grokdeclarator): Check that current_class_type is non-NULL
+	before calling constructor_name_p.
+
 2012-05-24  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/32080

gcc/cp/decl.c

@@ -9803,7 +9803,8 @@ grokdeclarator (const cp_declarator *declarator,
 	       clones.  */
 	    DECL_ABSTRACT (decl) = 1;
 	}
-      else if (constructor_name_p (unqualified_id, current_class_type))
+      else if (current_class_type
+	       && constructor_name_p (unqualified_id, current_class_type))
 	permerror (input_location, "ISO C++ forbids nested type %qD with same name "
 		   "as enclosing class",
 		   unqualified_id);