From 224d258474217ca411c5489abe94a51053b68f59 Mon Sep 17 00:00:00 2001
From: Jeff Young <jeff@rokeby.ie>
Date: Mon, 17 May 2021 10:44:50 +0100
Subject: [PATCH] A bit of safety.

Should also silence Coverity.
---
 include/view/view.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/view/view.h b/include/view/view.h
index c7b0596688..ed791777ea 100644
--- a/include/view/view.h
+++ b/include/view/view.h
@@ -403,6 +403,7 @@ public:
      */
     inline bool IsLayerVisible( int aLayer ) const
     {
+        wxCHECK( aLayer >= 0, false);
         wxCHECK( aLayer < (int) m_layers.size(), false );
 
         if( GetPrintMode() > 0 )