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CentOS 7.0 - man page for abort (centos section 3)

ABORT(3)						     Linux Programmer's Manual							  ABORT(3)

NAME
abort - cause abnormal process termination
SYNOPSIS
#include <stdlib.h> void abort(void);
DESCRIPTION
The abort() first unblocks the SIGABRT signal, and then raises that signal for the calling process. This results in the abnormal termina- tion of the process unless the SIGABRT signal is caught and the signal handler does not return (see longjmp(3)). If the abort() function causes process termination, all open streams are closed and flushed. If the SIGABRT signal is ignored, or caught by a handler that returns, the abort() function will still terminate the process. It does this by restoring the default disposition for SIGABRT and then raising the signal for a second time.
RETURN VALUE
The abort() function never returns.
CONFORMING TO
SVr4, POSIX.1-2001, 4.3BSD, C89, C99.
SEE ALSO
gdb(1), sigaction(2), exit(3), longjmp(3), raise(3)
COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.
GNU
2007-12-15 ABORT(3)