[Bug c++/116015] ICE in replace_placeholders_r for simple default member initializer

[mpolacek at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116015

--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
  Matrix A1{{n}};

ICEs too, but not

  Matrix A0{{}};
  Matrix A2{{n, n}};