segfault updating "devel/GConf" with 'pkg_add -U' or 'make replace'

["John D. Baker" <jdbaker%mylinuxisp.com@localhost>]

On machines (i386 or amd64) running netbsd-8 or -current, attempting to
update "GConf" either with 'make replace' or via binary package with
'pkg_add -U' ('make replace' runs 'pkg_add -U -D') fails with a segfault,
presumedly while running the de-installation script:

===> Building binary package for GConf-2.32.4nb11
=> Creating binary package /usr/packages/All/GConf-2.32.4nb11.tgz
===> Replacing for GConf-2.32.4nb11
=> Becoming ``root'' to make su-replace (sudo)
===> Updating using binary package of GConf-2.32.4nb11
/usr/sbin/pkg_add -K /var/db/pkg -U -D /tmp/pkgsrc/devel/GConf/work/.packages/GConf-2.32.4nb11.tgz
[1]   Segmentation fault (core dumped) ${GIO_QUERYMODUL...
===========================================================================
The following directories are no longer being used by GConf-2.32.4nb11,
and they can be removed if no other packages are using them:

        /usr/pkg/etc/gconf/gconf.xml.defaults

===========================================================================
pkg_delete: Couldn't remove package directory in `/var/db/pkg/GConf-2.32.4nb11'
pkg_add: exec of install script failed: No such file or directory
pkg_add: no files matching ``/var/db/pkg/GConf-2.32.4nb11/+*'' found: Undefined error: 0
pkg_add: 1 package addition failed
*** Error code 1

Stop.
make: stopped in /x/pkgsrc/devel/GConf


Usually, the failure to update refers to a temporary directory:

  /var/db/pkg/GConf-2.32.4nb11.xxxxxx

Although the message reports "(core dumped)", I have yet to find any
core file anywhere on the machine's file system.

Given the partial text:  ${GIO_QUERYMODUL...

I suspect a similarity to problems in PR pkg/51266.

Anyone else seeing anything like this?

I can work around the problem by forcibly removing "GConf" and install
the package explicity with 'pkg_add' or 'make package-install'.  Of course,
recorded dependency relationships are lost.

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