diff --git a/ChangeLog b/ChangeLog
index 846a566b3e..a8abbe6de5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+Sat Dec 22 11:30:21 2012  Masaki Matsushita  <glass.saga@gmail.com>
+
+	* struct.c (make_struct): remove junk ID check to allow members who
+	  have junk name like "foo\000".
+	* test/ruby/test_struct.rb: Test for above.
+	  [Bug #7575] [ruby-dev:46750]
+
 Sat Dec 22 05:34:54 2012  Eric Hodel  <drbrain@segment7.net>
 
 	* lib/net/http.rb:  Requests may be created with a URI which sets the
diff --git a/struct.c b/struct.c
index 1de9bbed81..fc03130987 100644
--- a/struct.c
+++ b/struct.c
@@ -207,15 +207,13 @@ make_struct(VALUE name, VALUE members, VALUE klass)
     len = RARRAY_LEN(members);
     for (i=0; i< len; i++) {
 	ID id = SYM2ID(ptr_members[i]);
-	if (rb_is_local_id(id) || rb_is_const_id(id)) {
-	    if (i < N_REF_FUNC) {
-		rb_define_method_id(nstr, id, ref_func[i], 0);
-	    }
-	    else {
-		rb_define_method_id(nstr, id, rb_struct_ref, 0);
-	    }
-	    rb_define_method_id(nstr, rb_id_attrset(id), rb_struct_set, 1);
+	if (i < N_REF_FUNC) {
+	    rb_define_method_id(nstr, id, ref_func[i], 0);
 	}
+	else {
+	    rb_define_method_id(nstr, id, rb_struct_ref, 0);
+	}
+	rb_define_method_id(nstr, rb_id_attrset(id), rb_struct_set, 1);
     }
 
     return nstr;
diff --git a/test/ruby/test_struct.rb b/test/ruby/test_struct.rb
index 03cb55999c..1c108777ee 100644
--- a/test/ruby/test_struct.rb
+++ b/test/ruby/test_struct.rb
@@ -227,6 +227,13 @@ class TestStruct < Test::Unit::TestCase
     assert_equal("#<struct Struct::R\u{e9}sum\u{e9} r\u{e9}sum\u{e9}=42>", a.inspect, '[ruby-core:24849]')
   end
 
+  def test_junk
+    struct_test = Struct.new("Foo", "a\000")
+    o = struct_test.new(1)
+    assert_equal(1, o.send("a\000"))
+    Struct.instance_eval { remove_const(:Foo) }
+  end
+
   def test_comparison_when_recursive
     klass1 = Struct.new(:a, :b, :c)