http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50864
Bug #: 50864
Summary: SFINAE bug
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: fate66...@gmail.com
[C++0x]
compiler option: -Wall -std=c++0x -O3
error message:
internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
source code:
namespace concept_impl {
template < class lhs, class rhs >
struct is_arrow_operable_impl
{
private:
template < class T = lhs, class U = rhs
, class = decltype(std::declval<T>() -> std::declval<U>()) // <-
here
>
static mpl::true_
test (int);
template < class... >
static mpl::false_
test (...);
public:
typedef decltype(test (0)) type;
};
} // namespace concept_impl
template < class lhs, class rhs >
struct is_arrow_operable
: public concept_impl::is_arrow_operable_impl<lhs, rhs>::type
{ };
// test type
struct foo
{
int* p;
};
// call this meta function
static_assert(is_arrow_dereferencable<foo*, int* foo::*>::value ,"error");
