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From: Lachlan Kang <LCRTRIfFu91c710azO2Y@live.co.uk>
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Subject: gnu/170624: diff -qr produces incorrect output
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>Number:         170624
>Category:       gnu
>Synopsis:       diff -qr produces incorrect output
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Aug 14 02:50:12 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator:     Lachlan Kang
>Release:        FreeBSD 9.0-RELEASE
>Organization:
>Environment:
FreeBSD  9.0-RELEASE FreeBSD 9.0-RELEASE #0: Tue Jan  3 07:15:25 UTC 2012     root@obrian.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386
>Description:
diff(1) produces incorrect output when recursively comparing folders that contains links to different character devices.

Given the following directories and links:
dir1/a -> /dev/random
dir2/a -> /dev/zero
"diff -qr dir1 dir2" prints "File dir1/a is a character special file while file dir2/a is a character special file".
It should print "Files dir1/a and dir2/a differ".
>How-To-Repeat:
mkdir dir1 dir2
ln -s /dev/random dir1/a
ln -s /dev/zero dir2/a
diff -qr dir1 dir2
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: