mruby-hash-ext/hash.c (hash_values_at): early return from the function.
MODIFY
mrbgems/mruby-hash-ext/src/hash-ext.c
mrbgems/mruby-hash-ext/src/hash-ext.c
@@ -29,6 +29,7 @@ hash_values_at(mrb_state *mrb, mrb_value hash)
mrb_get_args(mrb, "*", &argv, &argc);
result = mrb_ary_new_capa(mrb, argc);
+ if (argc == 0) return result;
ai = mrb_gc_arena_save(mrb);
for (i = 0; i < argc; i++) {
mrb_ary_push(mrb, result, mrb_hash_get(mrb, hash, argv[i]));

mruby-hash-ext/hash.c (hash_values_at): early return from the function.