Re: [ublas] broken coordinate_matrix::sort with gcc 4.7 (was: patches for #7297, #7296, #6514, #6511 on trunk - please verify)

Subject: Re: [ublas] broken coordinate_matrix::sort with gcc 4.7 (was: patches for #7297, #7296, #6514, #6511 on trunk - please verify)
From: sguazt (marco.guazzone_at_[hidden])
Date: 2012-08-28 16:26:19

On Tue, Aug 28, 2012 at 9:46 PM, Thomas Klimpel
<Thomas.Klimpel_at_[hidden]> wrote:
> Gunter Winkler wrote:
>> Looks like this hack does not work with gcc 4.7 any more. Maybe we can
>> improve coordinate_matrix::sort() somehow to use the zip_iterator. (see
>> storage_sparse.hpp:4396)
>
> My conclusion in <http://lists.boost.org/MailArchives/ublas/2011/12/5123.php> was that we need an implementation of "std::inplace_merge" guaranteed to accept our iterators. Basically any existing implementation could be used, as long as the licensing conditions allow this.
>
> As a side note, inplace_merge is cheating anyway, allocates temporary memory, and will only fall back to a true inplace_merge if this fails.
>
> Regards,
> Thomas

Hi,

After having done "svn update" (rev 80290), I've compiled the
following tests with GCC 4.7.0:
        begin_end
        comp_mat_erase
        concepts
        num_columns
        num_rows
        placement_new
        size
        sparse_view_test
        test_assignment
        test_complex_norms
        test_coordinate_matrix_sort
        test_inplace_solve
        test_lu
        test_triangular
        triangular_access
        triangular_layout

All test succeeded except:
        test_assignment
        test_coordinate_matrix_sort  (as expected)
        test_inplace_solve

Cheers,

-- Marco