#define vlc_backtrace() vlc_trace(__func__, __FILE__, __LINE__)
#if defined (LIBVLC_USE_PTHREAD) && !defined (NDEBUG)
-# define vlc_assert_locked( m ) \
- assert (pthread_mutex_lock (m) == EDEADLK)
+void vlc_assert_locked (vlc_mutex_t *);
#else
# define vlc_assert_locked( m ) (void)m
#endif