[Bug c++/58207] [4.8/4.9 Regression] ICE in sort_constexpr_mem_initializers due to out of bounds vector access

["jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58207

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |error-recovery
                 CC|                            |jason at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r195986.
Another testcase that ICEs:
struct C
{
  virtual bool foo ();
};
struct D : public C
{
  constexpr D () : C (6) {}
};

Changing sort_constexpr_mem_initializers to stop searching at the end of vector
and in that case just assert errorcount > 0 and return v unmodified fixes those
ICEs, though it is kind of ugly.