Graphical output for bison's debug information

hi, i was looking around for a tool to obtain a graphical tree out of bison's debug output. does such a tool already exist? kind regards ___ help-bison@gnu.org http://lists.gnu.org/mailman/listinfo/help-bison

In what aspect C++ support in bison is nowhere near as mature as the C support?

In Levine' flex & bison book, it mentioned "As should be apparent by now, the C++ support in bison is nowhere near as mature as the C support,..." on page 241 (Chapter 9). I'm still learning bison and haven't finish reading all the previous chapters. Could somebody point to me explicitly in what a