From 4f695895d0fcd26f09e2934218d9f9351e36e63b Mon Sep 17 00:00:00 2001
From: Niklas Fiekas <niklas.fiekas@backscattering.de>
Date: Wed, 2 Feb 2022 09:14:24 +0100
Subject: [PATCH] Fix theoretical UB while transmuting Arc (#588)

---
 src/column_family.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/column_family.rs b/src/column_family.rs
index f39e895..4cd5d30 100644
--- a/src/column_family.rs
+++ b/src/column_family.rs
@@ -71,7 +71,7 @@ impl UnboundColumnFamily {
     pub(crate) fn bound_column_family<'a>(self: Arc<Self>) -> Arc<BoundColumnFamily<'a>> {
         // SAFETY: the new BoundColumnFamily here just adding lifetime,
         // so that column family handle won't outlive db.
-        unsafe { std::mem::transmute(self) }
+        unsafe { Arc::from_raw(Arc::into_raw(self).cast()) }
     }
 }