[Bug c++/94205] [8/9/10 Regression] ICE in cxx_eval_constant_expression with 'this'-capturing lambda inside an NSDMI since r8-1251

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94205

--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
C++14 version that goes back to the introduction of C++14 constexpr in GCC 5:

struct S
{
  struct A
  {
    S *p;
    constexpr A(S* p): p(p) {}
    constexpr operator int() { p->a = 5; return 6; }
  };
  int a = A(this);
};


constexpr S s = {};

#define SA(X) static_assert((X),#X)
SA(s.a == 6);