gcc/testsuite/g++.dg/torture/pr52918-2.C

   1 // { dg-do compile }
   2
   3 typedef __SIZE_TYPE__ size_t;
   4 void*   __cxa_allocate_exception(size_t) throw();
   5 typedef struct { } __gthread_mutex_t;
   6 extern int __gthr_win32_mutex_unlock (__gthread_mutex_t *);
   7 int __gthread_mutex_lock (__gthread_mutex_t *__mutex);
   8 int __gthread_mutex_unlock (__gthread_mutex_t *__mutex);
   9 void   __throw_concurrence_lock_error();
  10 void   __throw_concurrence_unlock_error();
  11 class __mutex   {
  12     __gthread_mutex_t _M_mutex;
  13 public:
  14     void lock()     {
  15         if (__gthread_mutex_lock(&_M_mutex) != 0)
  16           __throw_concurrence_lock_error();
  17     }
  18     void unlock()     {
  19         if (__gthread_mutex_unlock(&_M_mutex) != 0)
  20           __throw_concurrence_unlock_error();
  21     }
  22 };
  23 class __scoped_lock   {
  24     typedef __mutex __mutex_type;
  25     __mutex_type& _M_device;
  26 public:
  27     explicit __scoped_lock(__mutex_type& __name) : _M_device(__name)     {
  28         _M_device.lock();
  29     }
  30     ~__scoped_lock() throw()    {
  31         _M_device.unlock();
  32     }
  33 };
  34 __mutex emergency_mutex;
  35 void * __cxa_allocate_exception(size_t thrown_size) throw()
  36 {
  37   void *ret;
  38   if (! ret)
  39     __scoped_lock sentry(emergency_mutex);
  40 }