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Defined in rt_misc.h, the __rt_exit() function shuts down the library but does not call functions registered with atexit().

atexit()-registered functions are called by exit().

The __rt_exit() function is not part of the C library standard, but the ARM® C library supports it as an extension.


void __rt_exit(int code);

Where code is not used by the standard function.


Shuts down the C library by calling __rt_lib_shutdown(), and then calls _sys_exit() to terminate the application. Reimplement _sys_exit() rather than __rt_exit().


This function does not return.