From 87b3cafb683786b20166e604d5a593f0bdd3e5f5 Mon Sep 17 00:00:00 2001
From: Jean Boussier <jean.boussier@gmail.com>
Date: Mon, 17 Jan 2022 16:36:48 +0100
Subject: [PATCH] Undefine T_DATA allocators for Ruby 3.2 compatibility

Ref: https://bugs.ruby-lang.org/issues/18007
---
 ext/mysql2/result.c    | 1 +
 ext/mysql2/statement.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/ext/mysql2/result.c b/ext/mysql2/result.c
index 5e03c90b..314cecda 100644
--- a/ext/mysql2/result.c
+++ b/ext/mysql2/result.c
@@ -1174,6 +1174,7 @@ void init_mysql2_result() {
   rb_global_variable(&cDateTime);
 
   cMysql2Result = rb_define_class_under(mMysql2, "Result", rb_cObject);
+  rb_undef_alloc_func(cMysql2Result);
   rb_global_variable(&cMysql2Result);
   
   rb_define_method(cMysql2Result, "each", rb_mysql_result_each, -1);
diff --git a/ext/mysql2/statement.c b/ext/mysql2/statement.c
index 137268af..b31efeb2 100644
--- a/ext/mysql2/statement.c
+++ b/ext/mysql2/statement.c
@@ -581,6 +581,7 @@ void init_mysql2_statement() {
   rb_global_variable(&cBigDecimal);
 
   cMysql2Statement = rb_define_class_under(mMysql2, "Statement", rb_cObject);
+  rb_undef_alloc_func(cMysql2Statement);
   rb_global_variable(&cMysql2Statement);
 
   rb_define_method(cMysql2Statement, "param_count", rb_mysql_stmt_param_count, 0);