RTEMS | cpukit/error: Make RTEMS_ERROR_* shifts 16-bit host clean (!1069)

Gedare Bloom (@gedare) gitlab at rtems.org
Sat Feb 21 21:47:30 UTC 2026




Gedare Bloom started a new discussion on cpukit/include/rtems/error.h: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/1069#note_143203

 > -#if 0
 > -/* not 16bit-int host clean */
 > -#define RTEMS_ERROR_ERRNO  (1<<((sizeof(rtems_error_code_t) * CHAR_BIT) - 2)) /* hi bit; use 'errno' */
 > -#define RTEMS_ERROR_PANIC  (RTEMS_ERROR_ERRNO / 2)       /* err fatal; no return */
 > -#define RTEMS_ERROR_ABORT  (RTEMS_ERROR_ERRNO / 4)       /* err is fatal; panic */
 > -#else
 > -#define RTEMS_ERROR_ERRNO  (0x40000000) /* hi bit; use 'errno' */
 > -#define RTEMS_ERROR_PANIC  (0x20000000) /* err fatal; no return */
 > -#define RTEMS_ERROR_ABORT  (0x10000000) /* err is fatal; panic */
 > -#endif
 > +/*
 > + * Define Error Flags
 > + */
 > +#define RTEMS_ERROR_BITS (sizeof(rtems_error_code_t) * CHAR_BIT)
 > +
 > +#define RTEMS_ERROR_ERRNO (((rtems_error_code_t)1) << (RTEMS_ERROR_BITS - 2))

```suggestion:-0+0
#define RTEMS_ERROR_ERRNO ( (rtems_error_code_t) 1 << ( RTEMS_ERROR_BITS - 2 ) )
```

-- 
View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/1069#note_143203
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