Octave 4.2.0 release candidate 1 available for ftp

[John W. Eaton]

The first release candidate for Octave 4.2.0 is available from

  ftp://alpha.gnu.org/gnu/octave

There may be some problems that need to be fixed so it is unlikely that 
this version will become the 4.2.0 release without some changes but I 
hope to not have more than two or three release candidates before the 
4.2.0 release is final.

Please try to build this version and report any problems you find in the 
bug tracker.  I've added a new version tag for the release candidate, so 
please use that when reporting problems.

A 32-bit Windows binary installer is also available.

After making the release candidate and the binary installer, I noticed 
that __run_test_suite__ does not complete properly with the Windows 
binary.  It seems to hang at either the tests for legend or copyobj.  I 
noticed that both of those files contain tests that set the graphics 
toolkit to gnuplot.  By not setting the toolkit to gnpulot, the tests 
proceed, but do not work properly for me.  I see messages like this:

>> test legend
Mesa warning: couldn't open dxtn.dll, software DXTn 
compression/decompression unavailable
GL2PS error: Incorrect viewport (x=0, y=0, width=0, height=0)
***** test
 h = figure ("visible", "off");
 unwind_protect
   position = get (h, "position");
   plot (rand (3));
   legend ();
   filename = sprintf ("%s.eps", tempname ());
   print (filename);
   unlink (filename);
   assert (get (h, "position"), position);
 unwind_protect_cleanup
   close (h);
 end_unwind_protect
!!!!! test failed
gl2ps_renderer::draw: gl2psBeginPage returned GL2PS_ERROR

or:

>> test copyobj
Mesa warning: couldn't open dxtn.dll, software DXTn 
compression/decompression unavailable
warning: gl2ps_renderer::draw_axes: empty feedback buffer and/or nothing 
else to print
warning: gl2ps_renderer::draw_axes: empty feedback buffer and/or nothing 
else to print
Error: /configurationerror in --setpagedevice--
Additional information: [/PageSize [0 0]]
Operand stack:
   --nostringval--   (%%BoundingBox: 1816825288 1818764032 1816825288 
1818764032)   --dict:1/2(ro)(G)--
 --nostringval--   --nostringval--   (%%BoundingBox: 1816825288 
1818764032 1816825288 1818764032)   1   1
816825288   1818764032   false   --dict:1/1(L)--
Execution stack:
   %interp_exit   .runexec2   --nostringval--   --nostringval-- 
--nostringval--   2   %stopped_push   -
-nostringval--   --nostringval--   --nostringval--   false   1 
%stopped_push   1951   1   3   %oparray_
pop   1950   1   3   %oparray_pop   --nostringval--   1934   1   3 
%oparray_pop   1820   1   3   %oparr
ay_pop   --nostringval--   %errorexec_pop   .runexec2   --nostringval-- 
 --nostringval--   --nostringval
--   2   %stopped_push   --nostringval--   %ztokenexec_continue 
(scanner state)   --nostringval--   --n
ostringval--   --nostringval--   --nostringval--   --nostringval-- 
--nostringval--   1913   10   3   %o
parray_pop   --nostringval--   --nostringval--   --dict:1/10(L)-- 
--nostringval--   16   %dict_continue

Dictionary stack:
   --dict:1189/1684(ro)(G)--   --dict:0/20(G)--   --dict:82/200(L)--
Current allocation mode is local
GPL Ghostscript 9.16: Unrecoverable error, exit code 1
***** testif HAVE_MAGICK
 unwind_protect
   h1 = figure ("visible", "off");
   x = 0:0.1:2*pi;
   y1 = sin (x);
   y2 = exp (x - 1);
   ax = plotyy (x,y1, x-1,y2, @plot, @semilogy);
   xlabel ("X");
   ylabel (ax(1), "Axis 1");
   ylabel (ax(2), "Axis 2");
   axes (ax(1));
   text (0.5, 0.5, "Left Axis", ...
         "color", [0 0 1], "horizontalalignment", "center");
   axes (ax(2));
   text (4.5, 80, "Right Axis", ...
         "color", [0 0.5 0], "horizontalalignment", "center");
   s1 = hdl2struct (h1);
   h2 = struct2hdl (s1);
   s2 = hdl2struct (h2);
   png1 = [tempname() ".png"];
   png2 = [tempname() ".png"];
   unwind_protect
     print (h1, png1);
     [img1, map1, alpha1] = imread (png1);
     print (h2, png2);
     [img2, map2, alpha2] = imread (png2);
   unwind_protect_cleanup
     unlink (png1);
     unlink (png2);
   end_unwind_protect
   assert (img1, img2);
   assert (map1, map2);
   assert (alpha1, alpha2);
 unwind_protect_cleanup
   close (h1);
   close (h2);
 end_unwind_protect
!!!!! test failed
gl2ps_renderer::draw: internal pipe error

AFAIK, these problems (hanging and/or these failures with the OpenGL 
graphics) are relatively recent developments but I don't know precisely 
when the problems appeared.  Any help with that would be most appreciated.

jwe