From 54ec2d439a9b2e1c3b8570e6d30b7231f6735d6d Mon Sep 17 00:00:00 2001
From: Emery Hemingway <ehmry@posteo.net>
Date: Thu, 13 Oct 2022 23:05:37 -0500
Subject: [PATCH] Allocate new TableRefs when necessary

---
 preserves.nimble  | 2 +-
 src/preserves.nim | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/preserves.nimble b/preserves.nimble
index c3d75b6..61fcb23 100644
--- a/preserves.nimble
+++ b/preserves.nimble
@@ -1,6 +1,6 @@
 # Package
 
-version = "20220904"
+version = "20221013"
 author        = "Emery Hemingway"
 description   = "data model and serialization format"
 license       = "Unlicense"
diff --git a/src/preserves.nim b/src/preserves.nim
index 7cf7ee0..5c19717 100644
--- a/src/preserves.nim
+++ b/src/preserves.nim
@@ -1028,6 +1028,8 @@ proc fromPreserveHook*[T, E](set: var HashSet[T]; pr: Preserve[E]): bool =
 
 proc fromPreserveHook*[A,B,E](t: var (Table[A,B]|TableRef[A,B]); pr: Preserve[E]): bool =
   if pr.isDictionary:
+    when t is TableRef[A,B]:
+      if t.isNil: new t
     result = true
     var a: A
     var b: B