[Bug c++/91925] [9/10 Regression] -fpack-struct causes a decltype with template to ICE

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91925

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
struct A {};
template <typename T> T fn(T);
class B {
  A a;
  decltype(fn(a)) p;
};