lib/49696: circular includes in sys/

[dholland%eecs.harvard.edu@localhost]

>Number:         49696
>Category:       lib
>Synopsis:       circular includes in sys/
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    lib-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Feb 26 03:55:00 +0000 2015
>Originator:     David A. Holland
>Release:        NetBSD 7.99.4 (20150117)
>Organization:
>Environment:
System: NetBSD macaran 7.99.1 NetBSD 7.99.1 (MACARAN) #22: Fri Oct 24 18:32:54 EDT 2014 dholland@macaran:/usr/src/sys/arch/amd64/compile/MACARAN amd64
Architecture: x86_64
Machine: amd64
>Description:

The following include cycle exists:

sys/types.h -> machine/endian.h -> sys/endian.h -> 
   machine/bswap.h -> sys/bswap.h -> sys/types.h

(as well as a shorter one that doesn't involve bswap.h)

It all works, at the moment, but it's ugly and fragile.

>How-To-Repeat:

grep

>Fix:
torches and pitchforks