From 0e76bf22ed0422ce76c2ad65627af29a03956172 Mon Sep 17 00:00:00 2001
From: Wojtek Figat <wojtek@figat.pl>
Date: Sun, 1 Aug 2021 23:17:55 +0200
Subject: [PATCH] Fix crash when reading empty string from stream

---
 Source/Engine/Serialization/Stream.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Source/Engine/Serialization/Stream.cpp b/Source/Engine/Serialization/Stream.cpp
index 9e04a970f..5e6176a03 100644
--- a/Source/Engine/Serialization/Stream.cpp
+++ b/Source/Engine/Serialization/Stream.cpp
@@ -27,6 +27,8 @@ void ReadStream::ReadStringAnsi(StringAnsi* data)
     }
 
     data->ReserveSpace(length);
+    if (length == 0)
+        return;
     char* ptr = data->Get();
     ASSERT(ptr != nullptr);
     Read(ptr, length);
@@ -44,6 +46,8 @@ void ReadStream::ReadStringAnsi(StringAnsi* data, int8 lock)
     }
 
     data->ReserveSpace(length);
+    if (length == 0)
+        return;
     char* ptr = data->Get();
     ASSERT(ptr != nullptr);
     Read(ptr, length);
@@ -68,6 +72,8 @@ void ReadStream::ReadString(String* data)
     }
 
     data->ReserveSpace(length);
+    if (length == 0)
+        return;
     Char* ptr = data->Get();
     ASSERT(ptr != nullptr);
     Read(ptr, length);
@@ -86,6 +92,8 @@ void ReadStream::ReadString(String* data, int16 lock)
     }
 
     data->ReserveSpace(length);
+    if (length == 0)
+        return;
     Char* ptr = data->Get();
     ASSERT(ptr != nullptr);
     Read(ptr, length);