[Bug c++/61341] New: internal compiler error: in tsubst, at cp/pt.c:11313

[Bug c++/61341] New: internal compiler error: in tsubst, at cp/pt.c:11313

[vanyacpp at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61341

            Bug ID: 61341
           Summary: internal compiler error: in tsubst, at cp/pt.c:11313
           Product: gcc
           Version: 4.8.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vanyacpp at gmail dot com

GCC 4.8.2

template<typename ...T>  /* 1 */
struct X
{
};

template<typename T>
struct X<X<T>, X<T> >   /* 2 */
{
 T i;
};

template<typename ...T>
struct X<X<T, T...>...>   /* 3 */
{
 const int static value = sizeof...(T);
};

template<int>
struct Y
{
};

template<>
struct Y<2>
{
 const static int value;
};

int main(int ARGC, char *ARGV[])
{
 //X<int, int> xii; // 1
 //xii.i; // error

 //X<X<int>, X<int> > xxixi; // 2 
 //xxixi.i; // ok

  Y<X<X<int, int, double>, X<double, int, double> >::value>::value;  
}

[Bug c++/61341] internal compiler error: in tsubst, at cp/pt.c:11313

[vanyacpp at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61341

--- Comment #1 from Ivan Sorokin <vanyacpp at gmail dot com> ---
Reduced case:

template<class ...T>
struct X
{};

template<class ...T>
void foo(X<T, T...>... a);

void test()
{
    foo(X<int, int, double>(), X<double, int, double>());
}

[Bug c++/61341] internal compiler error: in tsubst, at cp/pt.c:11313

[trtrmitya at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61341

Dmitry <trtrmitya at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |trtrmitya at gmail dot com

--- Comment #2 from Dmitry <trtrmitya at gmail dot com> ---
I confirm that this example program leads to internal compiler error for the
latest snapshots of gcc-4.8 and gcc-4.9
(tested on FreeBSD-10/STABLE with gcc built from ports collection)