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:
lock()14     void lock()     {
15 	if (__gthread_mutex_lock(&_M_mutex) != 0)
16 	  __throw_concurrence_lock_error();
17     }
unlock()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:
__scoped_lock(__mutex_type & __name)27     explicit __scoped_lock(__mutex_type& __name) : _M_device(__name)     {
28 	_M_device.lock();
29     }
throw()30     ~__scoped_lock() throw()    {
31 	_M_device.unlock();
32     }
33 };
34 __mutex emergency_mutex;
__cxa_allocate_exception(size_t thrown_size)35 void * __cxa_allocate_exception(size_t thrown_size) throw()
36 {
37   void *ret;
38   if (! ret)
39     __scoped_lock sentry(emergency_mutex);
40 }
41