diff options
| -rw-r--r-- | ext/json/generator/generator.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/json/generator/generator.c b/ext/json/generator/generator.c index ba10566433..7159180c0e 100644 --- a/ext/json/generator/generator.c +++ b/ext/json/generator/generator.c @@ -794,7 +794,7 @@ convert_string_subclass(VALUE key) { VALUE key_to_s = rb_funcall(key, i_to_s, 0); - if (RB_UNLIKELY(rb_type(key_to_s) != T_STRING)) { + if (RB_UNLIKELY(!RB_TYPE_P(key_to_s, T_STRING))) { VALUE cname = rb_obj_class(key); rb_raise(rb_eTypeError, "can't convert %"PRIsVALUE" to %s (%"PRIsVALUE"#%s gives %"PRIsVALUE")", |