From 943b6e4d9c480b9daf2352c28769a92eecf5f66a Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Wed, 10 Nov 2021 17:07:58 +0900
Subject: [PATCH] Fix format specifier

---
 io_buffer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/io_buffer.c b/io_buffer.c
index f53b140130..327a109177 100644
--- a/io_buffer.c
+++ b/io_buffer.c
@@ -390,7 +390,7 @@ rb_io_buffer_to_s(VALUE self)
     VALUE result = rb_str_new_cstr("#<");
 
     rb_str_append(result, rb_class_name(CLASS_OF(self)));
-    rb_str_catf(result, " %p+%ld", data->base, data->size);
+    rb_str_catf(result, " %p+%"PRIdSIZE, data->base, data->size);
 
     if (data->flags & RB_IO_BUFFER_INTERNAL) {
         rb_str_cat2(result, " INTERNAL");