From owner-freebsd-ports@freebsd.org  Wed Jun 13 02:11:10 2018
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Date: Tue, 12 Jun 2018 19:11:07 -0700
From: Steve Kargl <sgk@troutmask.apl.washington.edu>
To: "Montgomery-Smith, Stephen" <stephen@missouri.edu>
Cc: "freebsd-ports@freebsd.org" <freebsd-ports@freebsd.org>,
 "stephen@FreeBSD.org" <stephen@FreeBSD.org>
Subject: Re: Building math/octave with QT4?
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On Wed, Jun 13, 2018 at 12:32:28AM +0000, Montgomery-Smith, Stephen wrote:
> On 06/12/2018 04:20 PM, Steve Kargl wrote:
> > On Tue, Jun 12, 2018 at 08:28:07PM +0000, Montgomery-Smith, Stephen wrote:
> >>
> >> Or if you just send him a request without a patch, he may get
> >> around to it sometime.
> > 
> > This seems to work.
> > 
> > cd /usr/ports
> > svn merge -r 469260:469259 .
> > 
> 
> What exactly are you doing when this error occurs?  (The one you didn't
> include in the snippet above?)  I never experienced it myself.

It shows up almost immediately if I load octave-forge-signal.

portmaster math/octave
portmaster math/octave-forge-signal

My .octaverc file contains

pkg load netcdf
pkg load signal

loading signal also loads octave-forge-control.  At csh prompt

% octave --gui &

within a few minutes of the GUI opening either
try resizing the window or a pane in the window
or dragging the window.  Watch octave drop core.

-- 
Steve