https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65332
Bug ID: 65332
Summary: [5 Regression] error: expected template-name before
‘<’ token
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: trippels at gcc dot gnu.org
CC: jason at gcc dot gnu.org
The testcase from PR65328 shows:
markus@x4 fatal % cat transform.ii
namespace std
{
typedef int size_t;
template <typename _Tp> struct numeric_limits
{
static constexpr _Tp
max ()
{
return 0;
}
};
}
template <typename> using identity_transform = int;
template <template <typename> class> struct transform_sequence;
namespace detail
{
namespace recursive_transform_impl
{
template <int, int, template <typename> class, template <typename> class,
template <typename> class,
template <typename, template <typename> class> class,
template <typename> class>
struct recurse;
}
}
template <template <typename> class TPredicate,
template <typename, template <typename> class> class TTransformer,
template <typename> class... TTransforms>
struct A
{
template <template <typename> class TPreTransform = identity_transform,
template <typename> class TPostTransform = identity_transform,
std::size_t = std::numeric_limits<std::size_t>::max ()>
using with = detail::recursive_transform_impl::
recurse<0, 0, TPreTransform, TPostTransform, TPredicate, TTransformer,
transform_sequence<TTransforms...>::template apply>;
using apply = typename with<>::template apply<>;
};
markus@x4 fatal % g++ -std=c++11 -c transform.ii
transform.ii:38:48: error: expected template-name before ‘<’ token
using apply = typename with<>::template apply<>;
^
transform.ii:38:48: error: expected identifier before ‘<’ token
4.8, 4.9, EDG and clang accept the code.
