RTEMS | libmisc/stackchk: Add stack smashing protection (!277)

[Joel Sherrill (@joel)]

Joel Sherrill commented: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/277#note_122902


Good spot. I didn't realise that was in newlib. I think the implementation should be able to be overridden by a user. It also needs to integrate with RTEMS error handling/termination. What is in newlib's version that you think is an improvement?

I am prone to disable the newlib implementation for RTEMS to avoid conflicts. But if there is something in it which would improve the one in RTEMS, let's discuss that. 

I am not sure using a random canary is a great idea for RTEMS.

-- 
View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/277#note_122902
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