From bd6fa7f5cca426901bc9162724966339440bc6cb Mon Sep 17 00:00:00 2001
From: Jean Boussier <jean.boussier@gmail.com>
Date: Sat, 31 Jan 2026 08:53:48 +0100
Subject: ruby_xfree: reject memory allocated by ruby_mimalloc

---
 ractor.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'ractor.c')

diff --git a/ractor.c b/ractor.c
index 2dcbbd10a0..da1db8d803 100644
--- a/ractor.c
+++ b/ractor.c
@@ -298,7 +298,12 @@ ractor_free(void *ptr)
     }
 
     ractor_sync_free(r);
-    ruby_xfree(r);
+    if (r->main_ractor) {
+        ruby_mimfree(r);
+    }
+    else {
+        ruby_xfree(r);
+    }
 }
 
 static size_t
@@ -478,6 +483,7 @@ rb_ractor_main_alloc(void)
     r->pub.self = Qnil;
     r->newobj_cache = rb_gc_ractor_cache_alloc(r);
     r->next_ec_serial = 1;
+    r->main_ractor = true;
     ruby_single_main_ractor = r;
 
     return r;
-- 
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