testsuite: fix c23-constexpr-2a.c test to use dg-do run

[official-gcc.git] / gcc / testsuite / g++.dg / template / pr84694.C

// PR c++84694 ICE on friend decl
template<typename>
struct a {
  template<int ()> void b();
  friend void b<0>(); // ICEd with useless friend decl
};