[Bug middle-end/49628] [4.7 Regression] 447.dealII in SPEC CPU 2006 failed to build

["rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49628

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|2011-07-04 13:38:59         |2011.07.04 14:33:23
     Ever Confirmed|0                           |1

--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-07-04 14:33:23 UTC ---
Testcase:

#include <vector>
template <int rank, int dim> class Tensor;
template <int dim> class Tensor<1,dim> {
public:
    explicit Tensor (const bool initialize = true);
    Tensor (const Tensor<1,dim> &);
    Tensor<1,dim> & operator = (const Tensor<1,dim> &);
    double values[(dim!=0) ? (dim) : 1];
};
template <int dim>
inline Tensor<1,dim> & Tensor<1,dim>::operator = (const Tensor<1,dim> &p)
{
    for (unsigned int i=0; i<dim; ++i)
      values[i] = p.values[i];
};
template <int dim> class Quadrature {
public:
    const unsigned int n_quadrature_points;
};
class MappingQ1
{
    class InternalData  {
    public:
        std::vector<Tensor<1,3> > shape_derivatives;
        unsigned int n_shape_functions;
    };
    void compute_data (const Quadrature<3> &quadrature, InternalData &data)
const;
};
void MappingQ1::compute_data (const Quadrature<3> &q, InternalData &data) const
{
    const unsigned int n_q_points = q.n_quadrature_points;
    data.shape_derivatives.resize(data.n_shape_functions * n_q_points);
}