exit
Synopsis
#include <stdlib.h>
void exit(int status);
Status
Partially implemented
Conformance
IEEE Std 1003.1-2017
Description
The value of status may be 0, EXIT_SUCCESS, EXIT_FAILURE, or any other value, though only the least significant
8 bits (that is, (_status_ & 0377)) shall be available from wait() and waitpid(). The full value shall be
available from waitid() and in the siginfo_t passed to a signal handler for SIGCHLD.
The exit() function shall first call all functions registered by atexit(), in the reverse order of their
registration, except that a function is called after any previously registered functions that had already been called at
the time it was registered. Each function is called as many times as it was registered. If, during the call to any such
function, a call to the longjmp() function is made that would terminate the call to the registered function, the
behavior is undefined.
If a function registered by a call to atexit() fails to return, the remaining registered functions shall not be called
and the rest of the exit() processing shall not be completed. If exit() is called more than once, the behavior is
undefined.
The exit() function shall then flush all open streams with unwritten buffered data and close all open streams.
Finally, the process shall be terminated with the same consequences as described in Consequences of Process
Termination.
Return value
The exit() function does not return.
Errors
No errors are defined.
Tests
Untested
Known bugs
None