more Version 1 AT&T UNIX history:

a few cases that weren't altogether straightforward;
tweak and OK jmc@, OK sobrado@

1 files changed, 11 insertions, 5 deletions

diff --git a/lib/libc/sys/brk.2 b/lib/libc/sys/brk.2
index 96d827611ec..73fc74a5732 100644
--- a/lib/libc/sys/brk.2
+++ b/lib/libc/sys/brk.2
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: brk.2,v 1.22 2015/10/11 07:53:49 guenther Exp $
+.\"	$OpenBSD: brk.2,v 1.23 2019/09/07 10:28:27 schwarze Exp $
 .\"	$NetBSD: brk.2,v 1.7 1995/02/27 12:31:57 cgd Exp $
 .\"
 .\" Copyright (c) 1980, 1991, 1993
@@ -30,7 +30,7 @@
 .\"
 .\"     @(#)brk.2	8.2 (Berkeley) 12/11/93
 .\"
-.Dd $Mdocdate: October 11 2015 $
+.Dd $Mdocdate: September 7 2019 $
 .Dt BRK 2
 .Os
 .Sh NAME
@@ -135,10 +135,16 @@ to support the expansion.
 .Xr end 3 ,
 .Xr malloc 3
 .Sh HISTORY
-A
+A predecessor
+.Fn break
+appeared in
+.At v1 .
+The
 .Fn brk
-function call appeared in
-.At v7 .
+and
+.Fn sbrk
+function calls first appeared in
+.At v6 .
 .Sh BUGS
 Setting the break may fail due to a temporary lack of swap space.
 It is not possible to distinguish this from a failure caused by exceeding