From 10cee5bcb8657fb37b16bb936411abc1de5f0c39 Mon Sep 17 00:00:00 2001
From: Jean Boussier <byroot@ruby-lang.org>
Date: Sun, 12 Jul 2026 09:05:33 +0200
Subject: [PATCH] Declare TypedData with RUBY_TYPED_THREAD_SAFE_FREE

Available on Ruby 4.1: [Feature #22067]

Ref: https://bugs.ruby-lang.org/issues/22067

When available this flag superseed RUBY_TYPED_FREE_IMMEDIATELY
and allow parallel sweeping of the type.
---
 ext/strscan/strscan.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/ext/strscan/strscan.c b/ext/strscan/strscan.c
index 5c4484d68b..6c935f8262 100644
--- a/ext/strscan/strscan.c
+++ b/ext/strscan/strscan.c
@@ -238,6 +238,10 @@ strscan_memsize(const void *ptr)
     return size;
 }
 
+#ifndef RUBY_TYPED_THREAD_SAFE_FREE
+#define RUBY_TYPED_THREAD_SAFE_FREE RUBY_TYPED_FREE_IMMEDIATELY
+#endif
+
 static const rb_data_type_t strscanner_type = {
     .wrap_struct_name = "StringScanner",
     .function = {
@@ -248,7 +252,7 @@ static const rb_data_type_t strscanner_type = {
         .dcompact = strscan_compact,
 #endif
     },
-    .flags = RUBY_TYPED_FREE_IMMEDIATELY | RUBY_TYPED_WB_PROTECTED | RUBY_TYPED_EMBEDDABLE
+    .flags = RUBY_TYPED_THREAD_SAFE_FREE | RUBY_TYPED_WB_PROTECTED | RUBY_TYPED_EMBEDDABLE
 };
 
 static VALUE