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Date:	Mon, 05 Sep 2011 16:01:28 +0200
From:	Marco atzeri <marco DOT atzeri AT gmail DOT com>
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Subject:	Re: debugging SIGSEV on pclose
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On 9/5/2011 3:26 PM, jojelino wrote:
> On 2011-09-05 PM 9:20, Marco atzeri wrote:
>> command=0x207e969c "/usr/bin/gs -dQUIET -dNOPAUSE -dBATCH -dSAFER
>> -sDEVICE=png16m -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -r150x150
>> -dEPSCrop -sOutputFile=fltk.png -", in_type=0x1a45b18 "w")
>> at /pub/cygwin/cvs/src_new/winsup/cygwin/syscalls.cc:3920
>> 3920 {
> as far as i know, -dTextAlphaBits=4 -dGraphicsAlphaBits=4 make gs crash.
> because if textalphabits is used, apple-patented font hinting is
> needed.(although freetype library implemented alternative hinting, it
> doesn't migrated to gs.) so gs calls THROW_PATENTED which uses
> longjmp(yet i can't make sure why it crashed instead of showing error
> message), there is bug report regarding to this issue(but not for this
> sigsegv).
> http://www.ghostscript.com/pipermail/gs-bugs/2009-November/010447.html
> i think it would be okay if you remove textalphabits when invoking gs
>

Hi jojelino,
gs is unlikely crashing as the fltk.png is correctly produced.
 From strace I know that octave crashes before gs complete its output.

Are you sure about the bug number ?
http://www.ghostscript.com/pipermail/gs-bugs/2009-November/010447.html
is referring to patent expiration

Regards
Marco

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