pkg/52962: sysutils/memtestplus fails when built on -current

[paul%whooppee.com@localhost]

>Number:         52962
>Category:       pkg
>Synopsis:       sysutils/memtestplus fails when build on -current
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Jan 29 09:35:00 +0000 2018
>Originator:     Paul Goyette
>Release:        NetBSD 8.99.7
>Organization:
+------------------+--------------------------+----------------------------+
| Paul Goyette     | PGP Key fingerprint:     | E-mail addresses:          |
| (Retired)        | FA29 0E3B 35AF E8AE 6651 | paul at whooppee dot com   |
| Kernel Developer | 0786 F758 55DE 53BA 7731 | pgoyette at netbsd dot org |
+------------------+--------------------------+----------------------------+
>Environment:
	
	
System: NetBSD speedy.whooppee.com 8.99.7 NetBSD 8.99.7 (SPEEDY 2017-11-29 22:03:05 UTC) #0: Wed Nov 29 23:14:50 UTC 2017 paul%speedy.whooppee.com@localhost:/build/netbsd-local/obj/amd64/sys/arch/amd64/compile/SPEEDY amd64
Architecture: x86_64
Machine: amd64
>Description:
When building sysutils/memtestplus package on a -current system (at least,
all 8.99.* and any 7.99.* from the last two years!), the resulting image
won't run.  It either hangs or crashes within seconds after starting the
tests.  Running in "Safe Mode" (single-CPU core?) does not help.

Building the same package on any 6.x system produces a working image!

Someone else (I forget who) had a suspicion that the problem was introduced
with the most recent upgrade of gcc, but I cannot confirm.
	
>How-To-Repeat:
Build the package on a 8.99.x system, boot the image, and watch it fail.
Repeat on 6.0 or 6.1 and it succeeds.
	
>Fix:
Not known.
	

>Unformatted: