From aecbdf72bfff1bb65915182e965a8562d0b62a16 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Tue, 21 Feb 2023 09:45:17 +0900
Subject: [PATCH] vm.c (mrb_env_unshare): remove unnecessary
 mrb_write_barrier() call

Since this function does not modify references from env, we don't need
to put write barrier here.
---
 src/vm.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/vm.c b/src/vm.c
index b4639e43e..a271af28a 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -378,7 +378,6 @@ mrb_env_unshare(mrb_state *mrb, struct REnv *e, mrb_bool noraise)
     stack_copy(p, e->stack, len);
     e->stack = p;
     MRB_ENV_CLOSE(e);
-    mrb_write_barrier(mrb, (struct RBasic *)e);
     return TRUE;
   }
   else {