https://github.com/eventmachine/eventmachine/pull/988
https://github.com/eventmachine/eventmachine/commit/3980847f4463bcaf80c06f53e95b7eb1dddd2404

From 3980847f4463bcaf80c06f53e95b7eb1dddd2404 Mon Sep 17 00:00:00 2001
From: Antonio Terceiro <asa@terceiro.xyz>
Date: Thu, 5 Sep 2024 12:10:49 -0300
Subject: [PATCH] Fix usage of Process::Status on ruby3.3 (#988)

--- a/ext/extconf.rb
+++ b/ext/extconf.rb
@@ -140,6 +140,7 @@ def find_openssl_library
 
 # Add for changes to Process::Status in Ruby 3
 add_define("IS_RUBY_3_OR_LATER") if RUBY_VERSION > "3.0"
+add_define("IS_RUBY_3_3_OR_LATER") if RUBY_VERSION > "3.3"
 
 # Adjust number of file descriptors (FD) on Windows
 
--- a/ext/rubymain.cpp
+++ b/ext/rubymain.cpp
@@ -563,7 +563,13 @@ static VALUE t_get_subprocess_status (VALUE self UNUSED, VALUE signature)
 	if (evma_get_subprocess_status (NUM2BSIG (signature), &status)) {
 		if (evma_get_subprocess_pid (NUM2BSIG (signature), &pid)) {
 
-#ifdef IS_RUBY_3_OR_LATER
+#if defined(IS_RUBY_3_3_OR_LATER)
+			proc_status = rb_obj_alloc(rb_cProcessStatus);
+			struct rb_process_status *data = NULL;
+			data = (rb_process_status*)RTYPEDDATA_GET_DATA(proc_status);
+			data->pid = pid;
+			data->status = status;
+#elif defined(IS_RUBY_3_OR_LATER)
 			struct rb_process_status *data = NULL;
 
 			/* Defined to match static definition from MRI Ruby 3.0 process.c