Fatal error handler in return from thread

[leonpollak]

Hello, Fabian...:-)
In the source of the thread.cpp file, the wrapper function has:
// Returning from a thread is a fatal error, nothing more to
// do here than call the fatal error handler.
rtos::FailureHandler::fatal(rtos::FailureCode::returnFromThread());
Please, can you explain what is the reason for this approach? What is so criminal in returning from a thread?
BTW, the RTEMS API even has the task restart possibility.
Thank you for the clarification.

[fabian-dlr]

This is due to our internal policy of avoiding dynamic allocation of memory during the run-time of the application. Therefore all threads are created during startup and exist "forever".

For RTEMS this check could be moved to the thread exiting extension which would be less intrusive for other developers not following our policy. Nonetheless it might require an extension of the thread API to fully make use of this (get thread status, join other threads etc). If you want to create a PR for this we could further discuss the options/constraints.

PS: Please use a more descriptive issue title, I've updated this one for now