[antlr-interest] C/C++ instrumentation tool

[Andy Tripp]

I'm looking for a C/C++ code instrumentation tool that will cause my 
program to watch for
every variable assignment and print out the variable and value whenever 
any variable is assigned
a value.  I don't see any gcc options to do that kind of code 
instrumentation, and I don't see a way
to have gdb do that.

Does anyone know of such a tool? Preferably something simple and free.

Or am I going to have to whip one up with ANTLR?

Andy