bin/55120: savecore -N doesn't work

[paul%whooppee.com@localhost]

>Number:         55120
>Category:       bin
>Synopsis:       savecore -N doesn't work
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Mar 28 13:40:00 +0000 2020
>Originator:     Paul Goyette
>Release:        NetBSD 9.99.46
>Organization:
+--------------------+--------------------------+-----------------------+
| Paul Goyette       | PGP Key fingerprint:     | E-mail addresses:     |
| (Retired)          | FA29 0E3B 35AF E8AE 6651 | paul%whooppee.com@localhost     |
| Software Developer | 0786 F758 55DE 53BA 7731 | pgoyette%netbsd.org@localhost   |
+--------------------+--------------------------+-----------------------+
>Environment:
	
	
System: NetBSD speedy.whooppee.com 9.99.46 NetBSD 9.99.46 (SPEEDY 2020-02-07 16:26:35 UTC) #1: Fri Feb 7 19:37:58 UTC 2020 paul%speedy.whooppee.com@localhost:/build/netbsd-local/obj/amd64/sys/arch/amd64/compile/SPEEDY amd64
Architecture: x86_64
Machine: amd64
>Description:
While trying to debug another problem, I booted a new kernel, amd64
9.99.52, and created a crash dump.  After rebooting back into my
working 9.99.46 system I tried to save the crash dump using

	# savecore -N /netbsd.new.gdb
	savecore: dumpdev /dev/constty is tty; override kernel

	
>How-To-Repeat:
see above
	
>Fix:
Please
	

>Unformatted: