Don't allow array parameter in Struct.new

mrbgems/mruby-struct/src/struct.c

@@ -273,25 +273,15 @@ mrb_struct_s_def(mrb_state *mrb, mrb_value klass)
   }
   else {
     if (argc > 0) name = argv[0];
-    if (argc > 1) rest = argv[1];
-    if (mrb_array_p(rest)) {
-      if (!mrb_nil_p(name) && mrb_symbol_p(name)) {
-        /* 1stArgument:symbol -> name=nil rest=argv[0]-[n] */
-        mrb_ary_unshift(mrb, rest, name);
-        name = mrb_nil_value();
-      }
-    }
-    else {
-      pargv = &argv[1];
-      argcnt = argc-1;
-      if (!mrb_nil_p(name) && mrb_symbol_p(name)) {
-        /* 1stArgument:symbol -> name=nil rest=argv[0]-[n] */
-        name = mrb_nil_value();
-        pargv = &argv[0];
-        argcnt++;
-      }
-      rest = mrb_ary_new_from_values(mrb, argcnt, pargv);
+    pargv = &argv[1];
+    argcnt = argc-1;
+    if (!mrb_nil_p(name) && mrb_symbol_p(name)) {
+      /* 1stArgument:symbol -> name=nil rest=argv[0]-[n] */
+      name = mrb_nil_value();
+      pargv = &argv[0];
+      argcnt++;
     }
+    rest = mrb_ary_new_from_values(mrb, argcnt, pargv);
     for (i=0; i<RARRAY_LEN(rest); i++) {
       id = mrb_obj_to_sym(mrb, RARRAY_PTR(rest)[i]);
       mrb_ary_set(mrb, rest, i, mrb_symbol_value(id));

mrbgems/mruby-struct/test/struct.rb

@@ -158,3 +158,9 @@
   assert_equal 1, a.dig(:purple, :red)
   assert_equal 1, a.dig(1, 0)
 end
+
+assert("Struct.new does not allow array") do
+  assert_raise(TypeError) do
+    Struct.new("Test", [:a])
+  end
+end