[bug-notifications] [graphviz 0004276]: PNG backend: dot files from scfdot converted to png contain extraneous line

[Mantis Bug Tracker]

The following issue has been set as RELATED TO issue 0004288. 
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https://www.opencsw.org/mantis/view.php?id=4276 
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Reported By:                skayser
Assigned To:                
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Project:                    graphviz
Issue ID:                   4276
Category:                   regular use
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
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Date Submitted:             2010-02-15 13:56 CET
Last Modified:              2011-12-13 14:40 CET
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Summary:                    PNG backend: dot files from scfdot converted to png
contain extraneous line
Description: 
When i feed .dot files generated by scfdot to dot with -Tpng, the resulting
.png files contain an extra line at the top which makes the png unreadable
by image viewers. Deleting this line fixes the issue. Is this a bug in dot,
scfdot, or the png backend?

$ dot -V
dot - graphviz version 2.26.3 (20100126.1600)

# pkgutil -t http://mirror.opencsw.org/opencsw/testing -Ni scfdot
...

$ dot -Tpng -o test.png /opt/csw/share/doc/scfdot/examples/snv_24_x86.dot
$ file test.png
test.png:       data
$ head -1 test.png
-36 2444.2 translate newpath user_shape_0
$ gsed -i -e '1d' test.png
$ file test.png
test.png:       PNG image data

Simple graphs don't expose this problem.

$ echo "digraph G {Hello->World}" | dot -Tpng >hello.png
$ file hello.png
hello.png:      PNG image data
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Relationships       ID      Summary
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related to          0004288 Please rebuild ghostscript to link agai...
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 (0007945) skayser (administrator) - 2010-05-25 21:40
 https://www.opencsw.org/mantis/view.php?id=4276#c7945 
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John, I have revisited this issue and the related bug against ghostscript.
Not sure, why ghostscript was needed to be rebuilt against CSW's X11 ...
but this might have changed: libXrender is now available again in version
that links against vanilla X11 and installs in /opt/csw/lib (libxrender),
while the version which links against CSW's X11 and which installs to
/opt/csw/X11/lib was moved to a separate package (cx_libxrender).

Would you mind to have a look again?