Re: Ghostscript/GhostPDL 9.25 Release Candidate 1

Jonas Smedegaard <[email protected]> Fri, 14 Sep 2018 11:48:01 +0200
Newsgroups	gmane.comp.printing.ghostscript.devel
Message-ID	<[email protected]>
Quoting Johannes Meixner (2018-09-14 10:41:07)
> On Sep 13 15:51 Chris Liddell wrote (excerpt):
> > On 13/09/18 15:43, Johannes Meixner wrote:
> >> The call
> >> --------------------------------------------------------------------
> >> gs -q -r50 -dNOPAUSE -dBATCH -dSAFER \
> >>  -sOutputFile=/dev/null -sDEVICE=nullpage \
> >>  /usr/share/ghostscript/9.25/examples/transparency_example.ps
> >> --------------------------------------------------------------------
> >> fails with this gs stdout and stderr output:
> >> ------------------------------------------------------------------------------
> >>
> >> Error: /undefined in .pushpdf14devicefilter
> ...
> >> GPL Ghostscript RELEASE CANDIDATE 1 9.25: Unrecoverable error, exit code 1
> >> ------------------------------------------------------------------------------
> >>
> >> I don't know if '.pushpdf14devicefilter' is also used in general
> >> by other PostScript files or tools that output PostScript.
> > <SNIP>
> >
> > It's a custom operator, specific to Ghostscript, and no, it should not
> > be used anywhere else. I'm not sure if it only fails in SAFER, but,
> > frankly, don't use it.
> 
> I fully agree: Don't use it.
> ;-)
> 
> /usr/share/ghostscript/9.25/examples/transparency_example.ps
> that uses .pushpdf14devicefilter is the Ghostscript
> source file examples/transparency_example.ps
> 
> Because it is a Ghostscript upstream example others may
> assume .pushpdf14devicefilter could be regularly used.
> At least a comment in transparency_example.ps should explain
> that .pushpdf14devicefilter cannot be regularly used.
> 
> I excluded your transparency_example.ps in my ghostscript-testing
> package and now the remaining Ghostscript examples succeed, see
> https://build.opensuse.org/package/show/Printing/ghostscript-testing
> 
> Perhaps you at Ghostscript upstream could add such kind of test
> to your test suite as I run in my ghostscript-testing package
> so that you at Ghostscript upstream could notice such issues?
> 
> For the source of my simple test (bash script code)
> see the '%build' section in
> https://build.opensuse.org/package/view_file/Printing/ghostscript-testing/ghostscript-testing.spec?expand=1

You might also consider adding a "make test" build target to Ghostscript 
source so that us consumers had a consistent (limited) testsuite to 
optionally run when building the code.


 - Jonas

-- 
 * Jonas Smedegaard - idealist & Internet-arkitekt
 * Tlf.: +45 40843136  Website: http://dr.jones.dk/

 [x] quote me freely  [ ] ask before reusing  [ ] keep private
signature.asc (application/pgp-signature, 833 B)