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+---- Thread: A question for Rule21.8 (/showthread.php?tid=1076)
A question for Rule21.8 - tsukukazu - 14-07-2014
Hello.
I have a question about rule 21.8.
_Exit Function that were added in C99 also has implementation-defined behavior.
Is this not included?
Best regards,
Kazuhiro Tsukushiro
Re: A question for Rule21.8 - misra-c - 11-08-2014
It was a conscious decision not to include _Exit in this rule. _Exit() differs from exit() in that no atexit-registered handlers are called prior to program termination. This means that the undefined behaviour that can occur with exit() isn't possible with _Exit().
The implementation-defined behaviour remains a possibility (e.g. the status code returned to the environment, whether temporary files are deleted or not, whether streams are flushed and/or closed) but this was considered not to be a strong enough reason to ban _Exit().