From 7f0c6d30d3d42a9d9ee9ab79e2acd86baa9184f4 Mon Sep 17 00:00:00 2001
From: Jean Boussier <jean.boussier@gmail.com>
Date: Sun, 27 Apr 2025 12:35:01 +0200
Subject: [PATCH] [ruby/json] Use RB_TYPE_P

https://github.com/ruby/json/commit/b14250f1da
---
 ext/json/generator/generator.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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")",