From 7a40f1f06ce099455065dd98b2f8ce1d71946c6c Mon Sep 17 00:00:00 2001
From: Peter Zhu <peter@peterzhu.ca>
Date: Tue, 3 Jun 2025 11:23:25 -0400
Subject: [PATCH] Fix memory leak of Ractor recv_queue

Memory leak reported:

    3   miniruby                              0x104702c1c ractor_init + 164  ractor.c:460
    2   miniruby                              0x1046496a0 ruby_xmalloc + 44  gc.c:5188
    1   miniruby                              0x10464e840 rb_gc_impl_malloc + 148  default.c:8140
    0   libsystem_malloc.dylib                0x19ab3912c _malloc_zone_malloc_instrumented_or_legacy + 152
---
 ractor_sync.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ractor_sync.c b/ractor_sync.c
index 57aea296c2..31ac2df4cf 100644
--- a/ractor_sync.c
+++ b/ractor_sync.c
@@ -663,6 +663,10 @@ ractor_sync_mark(rb_ractor_t *r)
 static void
 ractor_sync_free(rb_ractor_t *r)
 {
+    if (r->sync.recv_queue) {
+        ractor_queue_free(r->sync.recv_queue);
+    }
+
     // maybe NULL
     if (r->sync.ports) {
         st_free_table(r->sync.ports);