From a5132286b7c7763942ae84bfc43ddbedcb4964ae Mon Sep 17 00:00:00 2001
From: ocornut <omarcornut@gmail.com>
Date: Sun, 11 Oct 2015 17:50:55 +0200
Subject: [PATCH] ImDrawList: ChannelsSetCurrent() added an extra assert

---
 imgui_draw.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/imgui_draw.cpp b/imgui_draw.cpp
index e91ba3909..09fcf0154 100644
--- a/imgui_draw.cpp
+++ b/imgui_draw.cpp
@@ -291,6 +291,7 @@ void ImDrawList::ChannelsMerge()
 
 void ImDrawList::ChannelsSetCurrent(int idx)
 {
+    IM_ASSERT(idx < _ChannelsCount);
     if (_ChannelsCurrent == idx) return;
     memcpy(&_Channels.Data[_ChannelsCurrent].CmdBuffer, &CmdBuffer, sizeof(CmdBuffer)); // copy 12 bytes, four times
     memcpy(&_Channels.Data[_ChannelsCurrent].IdxBuffer, &IdxBuffer, sizeof(IdxBuffer));