Scope Checking Patch

["Rob Quill" <rob.quill@gmail.com>]

Hi all,

This is the first patch I have ever submitted to an open source
project, so I'm a little bit unsure of the process. The patch adds the
ability to check if a variable is in scope, as descibed here:

http://sourceware.org/ml/gdb/2006-11/msg00149.html

I have attached the diffs for the two files I've changed. However, I
am seeing some regressions against the current cvs, which I can't
understand, so I was wondering if a) the regressions happen for anyone
esle? (which presumably it does), b) if anyone could offer any
suggestions as to the cause, and c) give thier opinions on the patch.

The patch allows the scope of constants, variables and variables in
classes/structures, by using $in_scope(variable_name) as an
expression, with value 1 if variable_name is in scope and 0 if it is
not.

Any help and thoughts you can offer is much appreciated.

Thanks,

Rob