Bug#680931: libarmadillo-dev: trivial program fails to compile

[Kumar Appaiah]

reassign 680931 g++-4.7 4.7.1-2
forwarded 680931 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53549
tags 680931 + upstream
thanks

Dear Jet,

I am reassigning this bug to gcc. The forwarded bug report is referred
to above.

Rearranging posts to make sense:

On Mon, Jul 09, 2012 at 10:17:16PM +1000, Conrad Sanderson wrote:
> On 9 July 2012 20:39, Jet Holloway <jet.holloway at gmail.com> wrote:
> > Dear Maintainer,
> >
> > I just upgraded libarmadillo-dev and libarmadillo3 from version 3.2.2+dfsg-1
> > to 3.2.3+dfsg-1, which caused a program I was working on to fail to compile.
> > When I removed 3.2.3 and reinstalled 3.2.2 the problem disappeared.
> >
> >
> > The following trivial program also causes the error:
> > #include <armadillo>
> > int main()
> > {
> >     return 0;
> > }
> >
> >
> > When I try to compile this program with "g++ armadillo_bug.cpp", I get these
> > errors:
> >
> > In file included from /usr/include/armadillo:141:0,
> > from armadillo_bug.cpp:2:
> > /usr/include/armadillo_bits/Mat_bones.hpp:545:26: error: no members matching ‘arma::Mat<eT>::operator=’ in ‘class arma::Mat<eT>’
> > /usr/include/armadillo_bits/Mat_bones.hpp:546:27: error: no members matching ‘arma::Mat<eT>::operator()’ in ‘class arma::Mat<eT>’
> > In file included from /usr/include/armadillo:142:0,
> > from armadillo_bug.cpp:2:
> > /usr/include/armadillo_bits/Col_bones.hpp:175:27: error: no members matching ‘arma::Col<eT>::operator()’ in ‘class arma::Col<eT>’
> > In file included from /usr/include/armadillo:143:0,
> > from armadillo_bug.cpp:2:
> > /usr/include/armadillo_bits/Row_bones.hpp:173:27: error: no members matching ‘arma::Row<eT>::operator()’ in ‘class arma::Row<eT>’
> >
> >
> > I am using gcc 4.7.1-2.
> > I have also downloaded armadillo-3.2.3.tar.gz from the armadillo website and
> > tried including that header file in the trivial program. This also failed to
> > compile.

> This is not a bug in Armadillo, but rather a bug (regression) in GCC
> 4.7.0 and 4.7.1.
> 
> The relevant Armadillo code follows the C++ standard.
> 
> Code using Armadillo 3.2.3 compiles fine with earlier versions of GCC
> (4.4, 4.5 and 4.6) as well as CLang 3.0.
> 
> As such, I suggest filing a bug against the GCC package in Debian.
> 
> There is a related upstream GCC bug, but there seems to be no progress on it:
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53549

Thanks. Reassigning this bug and marking this as forwarded upstream.

Kumar
-- 
Kumar Appaiah