On Fri, Jun 22, 2012 at 10:42 PM, Tom Tromey <tromey@redhat.com> wrote:
> It seems that sal->end can be == 0.
> For example I think gdb.decode_line can create sals like this.
> In this case I think "- 1" will yield weird results.
> Perhaps a None return would be better?

Done. The patch is attached.

2012-06-24  Siva Chandra Reddy  <sivachandra@google.com>

        New attribute 'last' for gdb.Symtab_and_line.
        * NEWS (Python Scripting): Add entry about the new attribute.
        * python/py-symtab.c (salpy_get_last): New function which
        implements the get method for the 'last' attribute of
        gdb.Symtab_and_line.
        (sal_object_getset): Add entry for the 'last' attribute.

        doc/
        * gdb.texinfo (Symbol Tables In Python): Add description about
        the new 'last' attribute of gdb.Symtab_and line.

        testsuite/
        * gdb.python/py-symtab.exp: Add tests to test the new attribute
        'last' of gdb.Symtab_and_line.
        * gdb.python/py-symbol.c: Move break point comment to enable
        testing of gdb.Symtab_and_line.last.

Thanks,
Siva Chandra