From 6abdd0cd3e5f199f0c3bd5f4b08eb3c296edce81 Mon Sep 17 00:00:00 2001
From: Kim Kulling <kimkulling@users.noreply.github.com>
Date: Wed, 28 Apr 2021 16:38:22 +0200
Subject: [PATCH] Fix crash when reading 0 bytes

- This is a valid option so crash shall not happen
---
 code/Common/DefaultIOStream.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/code/Common/DefaultIOStream.cpp b/code/Common/DefaultIOStream.cpp
index 115fea63c..ba9b9d625 100644
--- a/code/Common/DefaultIOStream.cpp
+++ b/code/Common/DefaultIOStream.cpp
@@ -90,10 +90,12 @@ DefaultIOStream::~DefaultIOStream() {
 size_t DefaultIOStream::Read(void *pvBuffer,
         size_t pSize,
         size_t pCount) {
+    if (0 == pCount) {
+        return 0;
+    }
     ai_assert(nullptr != pvBuffer);
     ai_assert(0 != pSize);
-    ai_assert(0 != pCount);
-
+    
     return (mFile ? ::fread(pvBuffer, pSize, pCount, mFile) : 0);
 }