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.\" 34.Dd May 28, 2018 35.Dt ABORT 3 36.Os 37.Sh NAME 38.Nm abort 39.Nd cause abnormal program termination 40.Sh LIBRARY 41.Lb libc 42.Sh SYNOPSIS 43.In stdlib.h 44.Ft void 45.Fn abort void 46.Sh DESCRIPTION 47The 48.Fn abort 49function causes abnormal program termination to occur, unless the 50signal 51.Dv SIGABRT 52is being caught and the signal handler does not return. 53.Pp 54Any open streams are flushed and closed. 55.Sh IMPLEMENTATION NOTES 56The 57.Fn abort 58function is thread-safe. 59It is unknown if it is async-cancel-safe. 60.Sh RETURN VALUES 61The 62.Fn abort 63function 64never returns. 65.Sh SEE ALSO 66.Xr abort2 2 , 67.Xr sigaction 2 , 68.Xr exit 3 69.Sh STANDARDS 70The 71.Fn abort 72function 73conforms to 74.St -p1003.1-90 . 75The 76.Fn abort 77function also conforms to 78.St -isoC-99 79with the implementation specific details as noted above. 80