Hi all,
On 30 Mai, 16:34, William Stein <wst...@gmail.com> wrote:
> Hello,
>
> I have release sage-4.0. It's now available athttp://sagemath.org/src/.
> Binaries will follow in a day.
>
> William
>
> --
> William Stein
> Associate Professor of Mathematics
> University of Washingtonhttp://wstein.org
there seems to be a sporadic bug in the Sage-4.x series with libpng,
that already had been reported once by John H Palmieri for
Sage-4.0.rc0 (see the thread there):
sage -t -long "devel/sage/sage/graphs/graph_plot.py"
libpng error: Image width or height is zero in IHDR
libpng error: Image width or height is zero in IHDR
**********************************************************************
File "/Users/Shared/sage/sage-4.0/devel/sage/sage/graphs/
graph_plot.py", line 349:
sage: GP.plot()
Exception raised:
Traceback (most recent call last):
File "/Users/Shared/sage/sage-4.0/local/bin/ncadoctest.py", line
1231, in run_one_test
self.run_one_example(test, example, filename, compileflags)
File "/Users/Shared/sage/sage-4.0/local/bin/sagedoctest.py",
line 38, in run_one_example
OrigDocTestRunner.run_one_example(self, test, example,
filename, compileflags)
File "/Users/Shared/sage/sage-4.0/local/bin/ncadoctest.py", line
1172, in run_one_example
compileflags, 1) in test.globs
File "<doctest __main__.example_4[6]>", line 1, in <module>
GP.plot()###line 349:
sage: GP.plot()
File "sage_object.pyx", line 98, in
sage.structure.sage_object.SageObject.__repr__ (sage/structure/
sage_object.c:1321)
File "/Users/Shared/sage/sage-4.0/local/lib/python2.5/site-
packages/sage/plot/plot.py", line 861, in _repr_
self.show()
File "/Users/Shared/sage/sage-4.0/local/lib/python2.5/site-
packages/sage/plot/plot.py", line 1278, in show
hgridlinesstyle=hgridlinesstyle)
File "/Users/Shared/sage/sage-4.0/local/lib/python2.5/site-
packages/sage/plot/plot.py", line 1610, in save
canvas.print_figure(filename, dpi=dpi)
File "/Users/Shared/sage/sage-4.0/local/lib/python/site-packages/
matplotlib/backend_bases.py", line 1453, in print_figure
**kwargs)
File "/Users/Shared/sage/sage-4.0/local/lib/python/site-packages/
matplotlib/backends/backend_agg.py", line 334, in print_png
filename_or_obj, self.figure.dpi)
RuntimeError: Error building image
**********************************************************************
File "/Users/Shared/sage/sage-4.0/devel/sage/sage/graphs/
graph_plot.py", line 351:
sage: GP.plot()
Exception raised:
Traceback (most recent call last):
File "/Users/Shared/sage/sage-4.0/local/bin/ncadoctest.py", line
1231, in run_one_test
self.run_one_example(test, example, filename, compileflags)
File "/Users/Shared/sage/sage-4.0/local/bin/sagedoctest.py",
line 38, in run_one_example
OrigDocTestRunner.run_one_example(self, test, example,
filename, compileflags)
File "/Users/Shared/sage/sage-4.0/local/bin/ncadoctest.py", line
1172, in run_one_example
compileflags, 1) in test.globs
File "<doctest __main__.example_4[8]>", line 1, in <module>
GP.plot()###line 351:
sage: GP.plot()
File "sage_object.pyx", line 98, in
sage.structure.sage_object.SageObject.__repr__ (sage/structure/
sage_object.c:1321)
File "/Users/Shared/sage/sage-4.0/local/lib/python2.5/site-
packages/sage/plot/plot.py", line 861, in _repr_
self.show()
File "/Users/Shared/sage/sage-4.0/local/lib/python2.5/site-
packages/sage/plot/plot.py", line 1278, in show
hgridlinesstyle=hgridlinesstyle)
File "/Users/Shared/sage/sage-4.0/local/lib/python2.5/site-
packages/sage/plot/plot.py", line 1610, in save
canvas.print_figure(filename, dpi=dpi)
File "/Users/Shared/sage/sage-4.0/local/lib/python/site-packages/
matplotlib/backend_bases.py", line 1453, in print_figure
**kwargs)
File "/Users/Shared/sage/sage-4.0/local/lib/python/site-packages/
matplotlib/backends/backend_agg.py", line 334, in print_png
filename_or_obj, self.figure.dpi)
RuntimeError: Error building image
**********************************************************************
1 items had failures:
2 of 18 in __main__.example_4
***Test Failed*** 2 failures.
For whitespace errors, see the file /Users/Shared/sage/sage-4.0/
tmp/.doctest_graph_plot.py
[12.4 s]
This was in a "make testlong" run for Sage-4.0, but when I reran "sage
-t -long" for this specific file ten times, it did not occur again:
/Users/Shared/sage/sage-4.0 georgweber$ sage -t -long $SAGE_ROOT/devel/
sage/sage/graphs/graph_plot.py
sage -t -long "devel/sage/sage/graphs/graph_plot.py"
[13.9 s]
----------------------------------------------------------------------
All tests passed!
Total time for all tests: 13.9 seconds
And it also did *not* occur when I had tested Sage-4.0.rc2 with "MAKE
testlong". John was using a Mac with OS X 10.5, I saw it on a MacIntel
with OS X 10.4, so this might be OS X specific. Or a timing issue/race
condition (I was using MAKE='make -j2'; both for Sage-4.0.rc2 and
Sage-4.0). Or whatsoever.
Any thoughts? Should I open a ticket?
Cheers,
gsw
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