[Bug target/52918] [4.8 Regression] ICE: Invalid bb->loop_father (NULL) in add_bb_to_loop

["rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52918

--- Comment #8 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-04-11 11:11:45 UTC ---
And for the 2nd:

typedef __SIZE_TYPE__ size_t;
class bad_alloc   { };
typedef struct {
} __gthread_mutex_t;
int __gthread_mutex_unlock (__gthread_mutex_t *__mutex);
class __concurrence_unlock_error   {
};
inline void   __throw_concurrence_unlock_error()   {
    throw __concurrence_unlock_error();
}
class __mutex   {
    __gthread_mutex_t _M_mutex;
public:
    void unlock()     {
        if (__gthread_mutex_unlock(&_M_mutex) != 0)
          __throw_concurrence_unlock_error();
    }
};
class free_list   {
    typedef __mutex __mutex_type;
    __mutex_type&     _M_get_mutex();
    void _M_get(size_t __sz) throw(bad_alloc);
};
void  free_list::_M_get(size_t __sz) throw(bad_alloc)
{
  __mutex_type& __bfl_mutex = _M_get_mutex();
  __bfl_mutex.unlock();
  int __ctr = 2;
  while (__ctr)  {
      size_t* __ret = 0;
      --__ctr;
      try {
          __ret = (size_t*) (::operator new(__sz + sizeof(size_t)));
      }
      catch(const bad_alloc&) { }
  }
}