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

Sat Feb 21 01:36:55 UTC 2026

SHIVAM DEOLANKAR created a merge request: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/1069

Project:Branches: D3athSkulll/rtems:fix-error-shift-16bit to rtems/rtos/rtems:main
Author:   SHIVAM DEOLANKAR

## Summary

Fix potential undefined behavior in RTEMS_ERROR\_\* bit shifts by casting\
the literal 1 to rtems_error_code_t before shifting. Verified on RV32\
and RV64 using QEMU.

## AI Details

### Prompt used

Verify the logic used for the error flags in the code snippet of error.h and help me test the codebase for rtems7 on riscv 32 and 64bit using qemu.

### AI model used

Chatgpt 5.2

### How AI was used for the contribution

- [x] Formatting
- [x] Test creation.
- [ ] Code comments.
- [ ] The entire contribution was generated using AI
- [ ] AI code completion such as Copilot in VSCode.

If others were used please add below

### Access

I confirm that I have not used a product that claims copyright over the generated content and that I have legitimate access to the AI tools used.

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