[Bug c++/42820] New: ICE in tree-check, accessed elt 2 of tree_vec with 1 elts in tsubst, at cp/pt.c:9868

[marc dot glisse at normalesup dot org]

The following code causes the error:
internal compiler error: tree check: accessed elt 2 of tree_vec with 1 elts in
tsubst, at cp/pt.c:9868
(I am using the debian gcc-snapshot 20100117)

It compiles fine with g++-4.4. I have seen similar bug reports in bugzilla, but
they are all marked either as fixed or as not-a-regression, so I am adding this
here, sorry if this is a duplicate.

template <class T> struct vector{};
struct Traits{struct Primitive{struct Id{};};};

template <class Tree, class Polyhedron> struct Tree_vs_naive
{
        typedef typename Tree::Primitive Primitive;

        void f() const
        {
                typedef vector<typename Primitive::Id> Id_vector;
        }
};

template <class Tree> void test_hint_strategies()
{
        vector<typename Tree::Primitive::Id> v;
}

int main(void)
{
        test_hint_strategies<Traits>();
}


-- 
           Summary: ICE in tree-check, accessed elt 2 of tree_vec with 1
                    elts in tsubst, at cp/pt.c:9868
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: marc dot glisse at normalesup dot org
  GCC host triplet: x86_64-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42820