Re: gdb.lookup_type problem with boost::multi_index::multi_index_container

[Surya Kiran Gullapalli <suryakiran.gullapalli@gmail.com>]

Is there any other way to get the required type ?

Surya

On Thu, Jan 24, 2013 at 7:23 AM, Surya Kiran Gullapalli
<suryakiran.gullapalli@gmail.com> wrote:
> Hi,
> I'm using gdb-7.5, on RHEL 6, compiled with gcc-4.7.2. I'm trying to
> write a pretty printer for boost::multi_index and ran into problems
> with gdb.lookup_type.
>
> Attached code has the following declaration.
>
> TestSet ts;
>
> Now, at the gdb command prompt, I'm performing the following
> operations (in python)
>
> gdb >> python
>> set_value = gdb.parse_and_eval('ts')
>> set_type = set_value.type.strip_typedefs()
>> t1 = set_type.template_argument(0) # Test
>> t2 = set_type.template_argument(1) # boost::mult_index::indexed_by ....
>> t3 = set_type.template_argument(2) # std::allocator<Test>
>> node_type = gdb.lookup_type('boost::multi_index::detail::multi_index_node_type < %s, %s, %s >::type' % (t1, t2, t3))
>> base = gdb.lookup_type ('boost::multi_index::detail::multi_index_base_type < %s, %s, %s >::type' % (t1, t2, t3))
>> allocator = gdb.lookup_type('boost::detail::allocator::rebind_to<%s, %s>::type' % (t3, node_type))
>> end
>
> I'm getting the node_type correctly. But gdb is unable to get types
> for 'base' and 'allocator'.
>
> ------------------------ The error for 'base' --------------------
> Traceback (most recent call last):
>   File "<string>", line 1, in <module>
> gdb.error: No type named boost::detail::multi_index_base_type < Test,
> boost::multi_index::indexed_by<boost::multi_index::ordered_unique<boost::multi_index::member<Test,
> std::basic_string<char, std::char_traits<char>, std::allocator<char>
>>, &Test::s>, mpl_::na, mpl_::na>
> , boost::multi_index::ordered_unique<boost::multi_index::tag<int,
> mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na,
> mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na,
> mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::multi_i
> ndex::member<Test, int, &Test::i>, mpl_::na>,
> boost::multi_index::ordered_unique<boost::multi_index::member<Test,
> float, &Test::f>, mpl_::na, mpl_::na>, mpl_::na, mpl_::na, mpl_::na,
> mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na,
> mpl_::na, mpl_::na
> , mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>,
> std::allocator<Test> >::type.
> Error while executing Python code.
> --------------------------------------------------------------
>
> and a similar error for 'allocator'.
> as boost::multi_index_container is derived from
> boost::detail::multi_index_base_type, I'm expecting gdb to return a
> valid type for the same.
>
> Am I missing something here. ?
>
> Thanks,
> Surya