octave signal 6

[Barry McInnes (NOAA Affiliate)]

I have seen the signal 6  posts in May, but am not sure what the problem is here on our system.
Centos
Linux linux256.psd.ad 2.6.32-696.3.1.el6.x86_64 #1 SMP Thu Apr 20 11:30:02 EDT 2017 x86_64 GNU/Linux
with the following versions installed from source
octave-4.2.1 freetype-2.8 libpng-1.6.29 zlib-1.2.11
From a Mac using XQuartz 1.18.4, other x11 like display, matlab display, using the simple test
x=-10:0.1:10;
y=sin(x);
plot(x,y);
but octave closes the main window and the terminal has
octave exited with signal 6
I have attached the strace output from
strace octave > /tmp/output 2>&1

thanks for thehelp
barry

--

Barry McInnes
325 Broadway
Boulder CO 80304
(303)4976231
address@hidden

octave.output
Description: Binary data