1.\" Copyright (c) 1990, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" the American National Standards Committee X3, on Information 6.\" Processing Systems. 7.\" 8.\" Redistribution and use in source and binary forms, with or without 9.\" modification, are permitted provided that the following conditions 10.\" are met: 11.\" 1. Redistributions of source code must retain the above copyright 12.\" notice, this list of conditions and the following disclaimer. 13.\" 2. Redistributions in binary form must reproduce the above copyright 14.\" notice, this list of conditions and the following disclaimer in the 15.\" documentation and/or other materials provided with the distribution. 16.\" 3. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)abort.3 8.1 (Berkeley) 6/4/93 33.\" $FreeBSD: src/lib/libc/stdlib/abort.3,v 1.10 2007/01/09 00:28:09 imp Exp $ 34.\" $DragonFly: src/lib/libc/stdlib/abort.3,v 1.3 2005/06/02 18:44:07 asmodai Exp $ 35.\" 36.Dd June 4, 1993 37.Dt ABORT 3 38.Os 39.Sh NAME 40.Nm abort 41.Nd cause abnormal program termination 42.Sh LIBRARY 43.Lb libc 44.Sh SYNOPSIS 45.In stdlib.h 46.Ft void 47.Fn abort void 48.Sh DESCRIPTION 49The 50.Fn abort 51function causes abnormal program termination to occur, unless the 52signal 53.Dv SIGABRT 54is being caught and the signal handler does not return. 55.Pp 56Any open streams are flushed and closed. 57.Sh IMPLEMENTATION NOTES 58The 59.Fn abort 60function is thread-safe. 61It is unknown if it is async-cancel-safe. 62.Sh RETURN VALUES 63The 64.Fn abort 65function 66never returns. 67.Sh SEE ALSO 68.Xr sigaction 2 , 69.Xr exit 3 70.Sh STANDARDS 71The 72.Fn abort 73function 74conforms to 75.St -p1003.1-90 . 76The 77.Fn abort 78function also conforms to 79.St -isoC-99 80with the implementation specific details as noted above. 81