fish-fipa-pta-crash-reduce.cpp

extern "C" void pthread_once(int *, void());
namespace std
{
extern __thread void (*__once_call)();
extern "C" void __once_proxy();
}; // namespace std

static void noop() {}

using voidfunc = void (*)();
static voidfunc *vp;

static void call_vp()
{
  (*vp)();
}

int main()
{
  using namespace std;
  voidfunc vf = noop;
  vp = &vf;
  __once_call = call_vp;
  int once{0};
  pthread_once(&once, __once_proxy);
  return 0;
}