Index: head/lib/libc/stdlib/abort.3
===================================================================
--- head/lib/libc/stdlib/abort.3	(revision 334305)
+++ head/lib/libc/stdlib/abort.3	(revision 334306)
@@ -1,79 +1,80 @@
 .\" Copyright (c) 1990, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
 .\"
 .\" This code is derived from software contributed to Berkeley by
 .\" the American National Standards Committee X3, on Information
 .\" Processing Systems.
 .\"
 .\" Redistribution and use in source and binary forms, with or without
 .\" modification, are permitted provided that the following conditions
 .\" are met:
 .\" 1. Redistributions of source code must retain the above copyright
 .\"    notice, this list of conditions and the following disclaimer.
 .\" 2. Redistributions in binary form must reproduce the above copyright
 .\"    notice, this list of conditions and the following disclaimer in the
 .\"    documentation and/or other materials provided with the distribution.
 .\" 3. Neither the name of the University nor the names of its contributors
 .\"    may be used to endorse or promote products derived from this software
 .\"    without specific prior written permission.
 .\"
 .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 .\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
 .\"     @(#)abort.3	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
 .Dd June 4, 1993
 .Dt ABORT 3
 .Os
 .Sh NAME
 .Nm abort
 .Nd cause abnormal program termination
 .Sh LIBRARY
 .Lb libc
 .Sh SYNOPSIS
 .In stdlib.h
 .Ft void
 .Fn abort void
 .Sh DESCRIPTION
 The
 .Fn abort
 function causes abnormal program termination to occur, unless the
 signal
 .Dv SIGABRT
 is being caught and the signal handler does not return.
 .Pp
 Any open streams are flushed and closed.
 .Sh IMPLEMENTATION NOTES
 The
 .Fn abort
 function is thread-safe.
 It is unknown if it is async-cancel-safe.
 .Sh RETURN VALUES
 The
 .Fn abort
 function
 never returns.
 .Sh SEE ALSO
+.Xr abort2 2 ,
 .Xr sigaction 2 ,
 .Xr exit 3
 .Sh STANDARDS
 The
 .Fn abort
 function
 conforms to
 .St -p1003.1-90 .
 The
 .Fn abort
 function also conforms to
 .St -isoC-99
 with the implementation specific details as noted above.
Index: head/lib/libc/stdlib/exit.3
===================================================================
--- head/lib/libc/stdlib/exit.3	(revision 334305)
+++ head/lib/libc/stdlib/exit.3	(revision 334306)
@@ -1,132 +1,133 @@
 .\" Copyright (c) 1990, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
 .\"
 .\" This code is derived from software contributed to Berkeley by
 .\" the American National Standards Committee X3, on Information
 .\" Processing Systems.
 .\"
 .\" Redistribution and use in source and binary forms, with or without
 .\" modification, are permitted provided that the following conditions
 .\" are met:
 .\" 1. Redistributions of source code must retain the above copyright
 .\"    notice, this list of conditions and the following disclaimer.
 .\" 2. Redistributions in binary form must reproduce the above copyright
 .\"    notice, this list of conditions and the following disclaimer in the
 .\"    documentation and/or other materials provided with the distribution.
 .\" 3. Neither the name of the University nor the names of its contributors
 .\"    may be used to endorse or promote products derived from this software
 .\"    without specific prior written permission.
 .\"
 .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 .\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
 .\"     @(#)exit.3	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
 .Dd September 9, 2002
 .Dt EXIT 3
 .Os
 .Sh NAME
 .Nm exit , _Exit
 .Nd perform normal program termination
 .Sh LIBRARY
 .Lb libc
 .Sh SYNOPSIS
 .In stdlib.h
 .Ft void
 .Fn exit "int status"
 .Ft void
 .Fn _Exit "int status"
 .Sh DESCRIPTION
 The
 .Fn exit
 and
 .Fn _Exit
 functions terminate a process.
 .Pp
 Before termination,
 .Fn exit
 performs the following functions in the order listed:
 .Bl -enum -offset indent
 .It
 Call the functions registered with the
 .Xr atexit 3
 function, in the reverse order of their registration.
 .It
 Flush all open output streams.
 .It
 Close all open streams.
 .It
 Unlink all files created with the
 .Xr tmpfile 3
 function.
 .El
 .Pp
 The
 .Fn _Exit
 function terminates without calling the functions registered with the
 .Xr atexit 3
 function, and may or may not perform the other actions listed.
 Both functions make the low-order eight bits of the
 .Fa status
 argument available to a parent process which has called a
 .Xr wait 2 Ns -family
 function.
 .Pp
 The C Standard
 .Pq St -isoC-99
 defines the values
 .Li 0 ,
 .Dv EXIT_SUCCESS ,
 and
 .Dv EXIT_FAILURE
 as possible values of
 .Fa status .
 Cooperating processes may use other values;
 in a program which might be called by a mail transfer agent, the
 values described in
 .Xr sysexits 3
 may be used to provide more information to the parent process.
 .Pp
 Note that
 .Fn exit
 does nothing to prevent bottomless recursion should a function registered
 using
 .Xr atexit 3
 itself call
 .Fn exit .
 Such functions must call
 .Fn _Exit
 instead (although this has other effects as well which may not be desired).
 .Sh RETURN VALUES
 The
 .Fn exit
 and
 .Fn _Exit
 functions
 never return.
 .Sh SEE ALSO
 .Xr _exit 2 ,
+.Xr abort2 2 ,
 .Xr wait 2 ,
 .Xr at_quick_exit 3 ,
 .Xr atexit 3 ,
 .Xr intro 3 ,
 .Xr quick_exit 3 ,
 .Xr sysexits 3 ,
 .Xr tmpfile 3
 .Sh STANDARDS
 The
 .Fn exit
 and
 .Fn _Exit
 functions conform to
 .St -isoC-99 .
Index: head/share/man/man3/assert.3
===================================================================
--- head/share/man/man3/assert.3	(revision 334305)
+++ head/share/man/man3/assert.3	(revision 334306)
@@ -1,98 +1,99 @@
 .\" Copyright (c) 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
 .\"
 .\" Redistribution and use in source and binary forms, with or without
 .\" modification, are permitted provided that the following conditions
 .\" are met:
 .\" 1. Redistributions of source code must retain the above copyright
 .\"    notice, this list of conditions and the following disclaimer.
 .\" 2. Redistributions in binary form must reproduce the above copyright
 .\"    notice, this list of conditions and the following disclaimer in the
 .\"    documentation and/or other materials provided with the distribution.
 .\" 3. Neither the name of the University nor the names of its contributors
 .\"    may be used to endorse or promote products derived from this software
 .\"    without specific prior written permission.
 .\"
 .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 .\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
 .\"     @(#)assert.3	8.1 (Berkeley) 6/9/93
 .\" $FreeBSD$
 .\"
 .Dd January 1, 2018
 .Dt ASSERT 3
 .Os
 .Sh NAME
 .Nm assert
 .Nd expression verification macro
 .Sh SYNOPSIS
 .In assert.h
 .Fn assert expression
 .Sh DESCRIPTION
 The
 .Fn assert
 macro tests the given
 .Ar expression
 and if it is false,
 the calling process is terminated.
 A
 diagnostic message is written to
 .Dv stderr
 and the function
 .Xr abort 3
 is called, effectively terminating the program.
 .Pp
 If
 .Ar expression
 is true,
 the
 .Fn assert
 macro does nothing.
 .Pp
 The
 .Fn assert
 macro
 may be removed at compile time by defining
 .Dv NDEBUG
 as a macro
 (e.g., by using the
 .Xr cc 1
 option
 .Fl D Ns Dv NDEBUG ) .
 Unlike most other include files,
 .In assert.h
 may be included multiple times.
 Each time whether or not
 .Dv NDEBUG
 is defined determines the behavior of assert from that point forward
 until the end of the unit or another include of
 .In assert.h .
 .Sh EXAMPLES
 The assertion:
 .Pp
 .Dl "assert(1 == 0);"
 .Pp
 generates a diagnostic message similar to the following:
 .Pp
 .Dl "Assertion failed: (1 == 0), function main, file assertion.c, line 100."
 .Sh SEE ALSO
+.Xr abort2 2 ,
 .Xr abort 3
 .Sh STANDARDS
 The
 .Fn assert
 macro conforms to
 .St -isoC-99 .
 .Sh HISTORY
 An
 .Nm
 macro appeared in
 .At v7 .