From 2c175b9f7e50f95f5eeb9aa91ac364eac18d3748 Mon Sep 17 00:00:00 2001
From: Isamu Mogi <isamu@leafytree.jp>
Date: Tue, 8 Jan 2019 00:33:39 +0900
Subject: [PATCH] Throw exception on serialize 32bit time older than unix epoch

---
 Assets/VRM/UniJSON/Scripts/MsgPack/MsgPackFormatter.cs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Assets/VRM/UniJSON/Scripts/MsgPack/MsgPackFormatter.cs b/Assets/VRM/UniJSON/Scripts/MsgPack/MsgPackFormatter.cs
index 1a713cb5f..eea676d69 100644
--- a/Assets/VRM/UniJSON/Scripts/MsgPack/MsgPackFormatter.cs
+++ b/Assets/VRM/UniJSON/Scripts/MsgPack/MsgPackFormatter.cs
@@ -418,6 +418,11 @@ namespace UniJSON
 
         public void TimeStamp32(DateTimeOffset time)
         {
+            // https://github.com/ousttrue/UniJSON/blob/1.2/Scripts/Extensions/DateTimeOffsetExtensions.cs#L13-L16
+            if (time < DateTimeOffsetExtensions.EpochTime)
+            {
+                throw new ArgumentOutOfRangeException();
+            }
             m_store.Write((Byte)MsgPackType.FIX_EXT_4);
             m_store.Write((SByte)(-1));
             m_store.WriteBigEndian((uint)time.ToUnixTimeSeconds());