#warning "Could not find any system to define platform macros, library will NOT be thread-safe"
-typedef struct { volatile int m; } hb_mutex_impl_t;
+typedef volatile int hb_mutex_impl_t;
#define HB_MUTEX_IMPL_INIT 0
-#define hb_mutex_impl_init(M) ((void) ((M)->m = 0))
-#define hb_mutex_impl_lock(M) ((void) ((M)->m = 1))
-#define hb_mutex_impl_unlock(M) ((void) ((M)->m = 0))
-#define hb_mutex_impl_free(M) ((void) ((M)-M = 2))
+#define hb_mutex_impl_init(M) ((void) (*(M) = 0))
+#define hb_mutex_impl_lock(M) ((void) (*(M) = 1))
+#define hb_mutex_impl_unlock(M) ((void) (*(M) = 0))
+#define hb_mutex_impl_free(M) ((void) (*(M) = 2))
#endif