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+++ b/packages/infra/current/src/pure.cxx
@@ -0,0 +1,65 @@
+//==========================================================================
+//
+//      pure.cxx
+//
+//      g++ support
+//
+//==========================================================================
+//####ECOSGPLCOPYRIGHTBEGIN####
+// -------------------------------------------
+// This file is part of eCos, the Embedded Configurable Operating System.
+// Copyright (C) 2003 Bart Veer
+//
+// eCos is free software; you can redistribute it and/or modify it under
+// the terms of the GNU General Public License as published by the Free
+// Software Foundation; either version 2 or (at your option) any later version.
+//
+// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+// for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with eCos; if not, write to the Free Software Foundation, Inc.,
+// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or inline functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. However the source code for this file must still be made available
+// in accordance with section (3) of the GNU General Public License.
+//
+// This exception does not invalidate any other reasons why a work based on
+// this file might be covered by the GNU General Public License.
+// -------------------------------------------
+//####ECOSGPLCOPYRIGHTEND####
+//==========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):   bartv
+// Date:        2003-03-27
+// Purpose:     provide a __cxa_pure_virtual() function
+// Description: g++ v3.x generates references to a function __cxa_pure_virtual()
+//              whenever the code contains pure virtual functions. This is a
+//              placeholder used while constructing an object, and the function
+//              should never actually get called. There is a default
+//              implementation in libsupc++ but that has dependencies on I/O
+//              and so on, unwanted in a minimal eCos environment. Instead we
+//              want a minimal __cxa_pure_virtual().
+//
+//####DESCRIPTIONEND####
+//
+//==========================================================================
+
+#include <pkgconf/infra.h>
+#include <cyg/infra/cyg_ass.h>
+
+extern "C" void
+__cxa_pure_virtual(void)
+{
+    CYG_FAIL("attempt to use a virtual function before object has been constructed");
+    for ( ; ; );
+}
+
+// EOF pure.cxx