[Bug c++/78894] [7 Regression] [c++17] ICE for std::list template deduction from std:: initializer_list

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78894

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org
   Target Milestone|---                         |7.0
            Summary|[c++17] ICE for std::list   |[7 Regression] [c++17] ICE
                   |template deduction from     |for std::list template
                   |std:: initializer_list      |deduction from std::
                   |                            |initializer_list

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r240756 - P0091R2.
Reduced testcase for the ICE (with -std=c++17):

struct A
{
  A ();
};
template <typename T>
struct C
{
  C (int, const T &, const A & = A ());
};

C a = { 0, 0 };