On 6/29/20 4:57 PM, Marek Polacek wrote:
On Mon, Jun 29, 2020 at 09:51:57AM +0200, Martin Liška wrote:
On 6/26/20 9:34 PM, Marek Polacek via Gcc-patches wrote:
As discussed last month:
<https://gcc.gnu.org/pipermail/gcc-patches/2020-May/545879.html>
it's time to change the C++ default to gnu++17. I've committed the patch after
testing x86_64-pc-linux-gnu and powerpc64le-unknown-linux-gnu. Brace
yourselves!
Marek
Just a small note that 510.parest_r SPEC 2017 benchmark can't be built now
with default changed to -std=c++17. The spec config needs to be adjusted.
Interesting, do you know why? Does it use the register keyword?
Apparently it needs -fno-new-ttp-matching for successful compilation.
There's a reduced test-case I made:
cat fe.ii
template <int, int> class FiniteElement;
template <int, int> class DoFHandler;
class FETools {
template <int dim, class InVector, class OutVector, int spacedim>
void back_interpolate(const DoFHandler<dim, spacedim> &, const InVector &,
const FiniteElement<dim, spacedim> &, OutVector &);
template <int dim, template <int> class DH, class InVector, class OutVector,
int spacedim>
void back_interpolate(const DH<dim> &, InVector,
const FiniteElement<dim, spacedim> &, OutVector);
};
template <int dim, int = dim> class DoFHandler;
template <int dim, int = dim> class FiniteElement;
template <int dim, class InVector, class OutVector, int spacedim>
void FETools::back_interpolate(const DoFHandler<dim, spacedim> &,
const InVector &,
const FiniteElement<dim, spacedim> &,
OutVector &) {}
template void FETools::back_interpolate(const DoFHandler<3> &, const float &,
const FiniteElement<3> &, float &);
Martin
Marek
