RTEMS | C++20 deprecates some volatile operations (#5505)

Mon Mar 2 02:05:21 UTC 2026

Sebastian Huber created an issue: https://gitlab.rtems.org/rtems/rtos/rtems/-/issues/5505

See:

https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1152r4.html

This is an issue with threaddispatch.h:

```
cpukit/include/rtems/score/threaddispatch.h: In function 'void _Thread_Dispatch_unnest(Per_CPU_Control*)':
cpukit/include/rtems/score/threaddispatch.h:258:15: error: '--' expression of 'volatile'-qualified type is deprecated [-Werror=volatile]
  258 |   --cpu_self->thread_dispatch_disable_level;
      |     ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
```

-- 
View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/issues/5505
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