octave: magick/semaphore.c:525: [...] failed

[Valmor de Almeida]

Hello,

This test code for writing an image does not run and I do not understand
why. Would anyone be able to help? I am using a gentoo distribution,
octave-3.2.4-r1 and graphicsmagick-1.3.12

Thanks,

--
Valmor


file test.m
---------------------------
#! /usr/bin/octave -qf

im = ones(2,2);
im(2,1) = 0.5;
im(1,2) = 0.5;

imwrite(im,"image.png");
--------------------------

->  ./test.m
octave: magick/semaphore.c:525: LockSemaphoreInfo: Assertion
`semaphore_info != (SemaphoreInfo *) ((void *)0)' failed.
panic: Aborted -- stopping myself...
attempting to save variables to `octave-core'...
save to `octave-core' complete
Aborted