The Single UNIX ® Specification, Version 2
Copyright © 1997 The Open Group


abort - generate an abnormal process abort


#include <stdlib.h>

void abort(void);


The abort() function causes abnormal process termination to occur, unless the signal SIGABRT is being caught and the signal handler does not return. The abnormal termination processing includes at least the effect of fclose() on all open streams, and message catalogue descriptors, and the default actions defined for SIGABRT. The SIGABRT signal is sent to the calling process as if by means of raise() with the argument SIGABRT.

The status made available to wait() or waitpid() by abort() will be that of a process terminated by the SIGABRT signal. The abort() function will override blocking or ignoring the SIGABRT signal.


The abort() function does not return.


No errors are defined.




Catching the signal is intended to provide the application writer with a portable means to abort processing, free from possible interference from any implementation-provided library functions. If SIGABRT is neither caught nor ignored, and the current directory is writable, a core dump may be produced.




exit(), kill(), raise(), signal(),


Derived from Issue 1 of the SVID.

UNIX ® is a registered Trademark of The Open Group.
Copyright © 1997 The Open Group