kern/56295: new failing test case: bin/dd/t_dd:length

[martin%NetBSD.org@localhost]

>Number:         56295
>Category:       kern
>Synopsis:       new failing test case: bin/dd/t_dd:length
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Jul 03 05:35:00 +0000 2021
>Originator:     Martin Husemann
>Release:        NetBSD 9.99.86
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD thirdstage.duskware.de 9.99.86 NetBSD 9.99.86 (MODULAR) #471: Fri Jul 2 20:01:20 CEST 2021 martin%thirdstage.duskware.de@localhost:/usr/src/sys/arch/sparc64/compile/MODULAR sparc64
Architecture: sparc64
Machine: sparc64
>Description:

After the recent changes one of the dd tests fails.

Previously (using /bin/sh) this would work:

$ dd if=/dev/zero of=/dev/fd/5 count=1 5>&1 | hexdump -C
1+0 records in
1+0 records out
512 bytes transferred in 0.001 secs (512000 bytes/sec)
00000000  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00000200
$ 

But now:

$ dd if=/dev/zero of=/dev/fd/5 count=1 5>&1 | hexdump -C
1+0 records in
1+0 records out
512 bytes transferred in 0.001 secs (512000 bytes/sec)
$ 


>How-To-Repeat:
s/a

>Fix:
n/a