From 22189f7aa435c38f68f739b84566a847acf625d0 Mon Sep 17 00:00:00 2001
From: reuk <reuk@users.noreply.github.com>
Date: Thu, 29 Apr 2021 17:24:54 +0100
Subject: [PATCH] ArrayBase:  Avoid undefined behaviour when trying to copy a
 range of 0 elements

---
 modules/juce_core/containers/juce_ArrayBase.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/modules/juce_core/containers/juce_ArrayBase.h b/modules/juce_core/containers/juce_ArrayBase.h
index af39b2ed7d..711bb6122c 100644
--- a/modules/juce_core/containers/juce_ArrayBase.h
+++ b/modules/juce_core/containers/juce_ArrayBase.h
@@ -402,7 +402,8 @@ private:
     template <typename T = ElementType>
     TriviallyCopyableVoid<T> addArrayInternal (const ElementType* otherElements, int numElements)
     {
-        memcpy (elements + numUsed, otherElements, (size_t) numElements * sizeof (ElementType));
+        if (numElements > 0)
+            memcpy (elements + numUsed, otherElements, (size_t) numElements * sizeof (ElementType));
     }
 
     template <typename Type, typename T = ElementType>