[boost] request for a test in GCC 4.0.0 20050309 (was [aligned_storage][repost] problems with GCC 4.0.0 20050309)

From: Joaquín Mª López Muñoz (joaquin_at_[hidden])
Date: 2005-03-14 09:31:00

Would some kind sould please test the following in GCC 4.0.0 20050309?

#include <cstddef>

template<
 std::size_t size_,
 std::size_t alignment_ = std::size_t(-1)>
struct aligned_storage
{
};

template<typename T>
struct foo
{
  aligned_storage<sizeof(T)> as;
};

int main()
{
  foo<double> f;
}

I'm trying to isolate the aligned_storage-problem with GCC 4.0 shown at:

http://tinyurl.com/4hxy5

Thank you!

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Peter Dimov ha escrito:

> JOAQUIN LOPEZ MU?Z wrote:
> > The class aligned_storage in boost/aligned_storage.hpp has
> > the following decl:
> >
> > template <
> >      std::size_t size_
> >    , std::size_t alignment_ = std::size_t(-1)
> >>
> > class aligned_storage;
> >
> > GCC 4.0 complains about the default value for aligmnent_ saying
> > that:
> >
> > '(size_t)((-1))' is not a valid template argument for type
> > 'unsigned int' because it is a non-constant expression
> >
> > which is ruining some of the regression tests.
> > Is GCC right or shall I submit a bug report at gcc.gnu.org/bugzilla?
>
> I don't see anything in the standard or in the issue lists that prohibits
> size_t(-1) as an integral constant expression. Bug report.
>
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