From 67fee915e01a35d86e73634441af256f386f60b0 Mon Sep 17 00:00:00 2001
From: Joshua Haberman <jhaberman@gmail.com>
Date: Wed, 7 Apr 2021 10:30:51 -0700
Subject: [PATCH] Fixed memory leak of Ruby arena objects.

In our free() method, we were freeing the memory from the
upb arena but we were failing to free the memory for the
Ruby arena object. This was causing every Ruby arena object
to leak: even though the objects were getting GC'd, the
underlying memory was not getting released.
---
 ruby/ext/google/protobuf_c/protobuf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ruby/ext/google/protobuf_c/protobuf.c b/ruby/ext/google/protobuf_c/protobuf.c
index 65263a44cf..490cda670b 100644
--- a/ruby/ext/google/protobuf_c/protobuf.c
+++ b/ruby/ext/google/protobuf_c/protobuf.c
@@ -180,6 +180,7 @@ static void Arena_mark(void *data) {
 static void Arena_free(void *data) {
   Arena *arena = data;
   upb_arena_free(arena->arena);
+  xfree(arena);
 }
 
 static VALUE cArena;