D25647.id74399.diff
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	Index: head/lib/libc/gen/gethostname.3
	===================================================================
	--- head/lib/libc/gen/gethostname.3
	+++ head/lib/libc/gen/gethostname.3
	@@ -28,7 +28,7 @@
	.\" @(#)gethostname.3 8.1 (Berkeley) 6/4/93
	.\" $FreeBSD$
	.\"
	-.Dd August 18, 2003
	+.Dd July 13, 2020
	.Dt GETHOSTNAME 3
	.Os
	.Sh NAME
	@@ -68,9 +68,9 @@
	This call is restricted to the super-user and
	is normally used only when the system is bootstrapped.
	.Pp
	-Host names are limited to
	-.Brq Dv HOST_NAME_MAX
	-characters, not including the trailing null, currently 255.
	+Applications should use
	+.Fn sysconf _SC_HOST_NAME_MAX
	+to find the maximum length of a host name (not including the terminating null).
	.Sh RETURN VALUES
	.Rv -std
	.Sh ERRORS