0024671: TKOpenGl, OpenGl_Context - glGetPointerv might be called without GL context

[occt.git] / src / OpenGl / OpenGl_Context.cxx

diff --git a/src/OpenGl/OpenGl_Context.cxx b/src/OpenGl/OpenGl_Context.cxx
index 272f6f3..514ef1b 100644 (file)
--- a/src/OpenGl/OpenGl_Context.cxx
+++ b/src/OpenGl/OpenGl_Context.cxx
@@ -4,8 +4,8 @@
 //
 // This file is part of Open CASCADE Technology software library.
 //
-// This library is free software; you can redistribute it and / or modify it
-// under the terms of the GNU Lesser General Public version 2.1 as published
+// This library is free software; you can redistribute it and/or modify it under
+// the terms of the GNU Lesser General Public License version 2.1 as published
 // by the Free Software Foundation, with special exception defined in the file
 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
 // distribution for complete text of the license and disclaimer of any warranty.
@@ -148,7 +148,8 @@ OpenGl_Context::~OpenGl_Context()
   myDelayed.Nullify();
 
   if (arbDbg != NULL
-   && caps->contextDebug)
+   && caps->contextDebug
+   && IsValid())
   {
     // reset callback
     void* aPtr = NULL;