From b57c0a9db15f04de4b647b15acfe213a1060fc56 Mon Sep 17 00:00:00 2001
From: Wojtek Figat <wojtek@figat.pl>
Date: Mon, 3 May 2021 21:04:40 +0200
Subject: [PATCH] Fix String::Resize to support buffer growing

---
 Source/Engine/Core/Types/String.h | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/Source/Engine/Core/Types/String.h b/Source/Engine/Core/Types/String.h
index d8684bf67..d7d42f211 100644
--- a/Source/Engine/Core/Types/String.h
+++ b/Source/Engine/Core/Types/String.h
@@ -497,18 +497,19 @@ public:
     }
 
     /// <summary>
-    /// Resizes string contents, works like: *this = Left(length) but is faster.
+    /// Resizes string contents.
     /// </summary>
-    /// <param name="length">New length of the string (amount of characters from left side to preserve).</param>
+    /// <param name="length">New length of the string.</param>
     void Resize(int32 length)
     {
-        ASSERT(length >= 0 && length <= _length);
+        ASSERT(length >= 0);
         if (_length != length)
         {
             const auto oldData = _data;
+            const auto minLength = _length < length ? _length : length;
             _length = length;
             _data = (T*)Platform::Allocate((length + 1) * sizeof(T), 16);
-            Platform::MemoryCopy(_data, oldData, length * sizeof(T));
+            Platform::MemoryCopy(_data, oldData, minLength * sizeof(T));
             _data[length] = 0;
             Platform::Free(oldData);
         }