Created attachment 22194 [details]
Running the following command line with the attached PDF input file (from pdftopdf filter of cups-filters) causes a crash:
cat test-gs-pclm.pdf | gs -dQUIET -dSAFER -dNOPAUSE -dBATCH -dNOINTERPOLATE -dNOMEDIAATTRS -dUsePDFX3Profile -sstdout=%stderr -sOutputFile=%stdout -r600x600 -sDEVICE=pclm -dStripHeight=64 -sCompression=Flate -dDownScaleFactor=1 -dDEVICEWIDTHPOINTS=612 -dDEVICEHEIGHTPOINTS=792 -I/usr/share/cups/fonts -sOutputICCProfile=sgray.icc -c '<</.HWMargins[11.990551 11.990551 11.990540 11.990540] /Margins[0 0]>>setpagedevice' -f -_ > out
As output I get
**** File has no /OutputIntents attribute
malloc(): invalid size (unsorted)
Aborted (core dumped)
The file "out" should get a PCLm file when Ghostscript had completed. In my case it only contains the first 8192 bytes of the expected PCLm file. A complete PCLm file can be displayed with a PDF viewer. My "out" file does not even show a part of the content. The "file" command identifies the file as PDF (as it usually dos with PCLm files), even not being complete.
System is Ubuntu Jammy (22.04 LTS), amd64.
This considerably simpler command line :
-sDEVICE=pclm -sOutputICCProfile=sgray.icc -o out.pclm test-gs-pclm.pdf
exhibits what I believe to be the same problem. Remove the -sOutputICCProfile= and the command runs to completion. Using ppmraw instead of pclm still crashes.
On Windows, running under a debugger I'm seeing a seg fault in (essentially) malloc() from gx_path_new_subpath(), from pdf14_stroke_path().
However I suspect (given the necessity of including -sOutputICCProfile) that this is probably not where the actual problem occurs. Also using ppmraw give me a heap corruption error (in malloc) from make_table_template() from gx_scan_convert_tr_app().
Given that it 'appears' to be related to ICC profiles, and possibly transparency, I'm assigning it to Michael, though that may need to change, it could be scan conversion, memory management or clist at fault.
Fixed with http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=648937e3ee1a05a475be57ed590b4913e4eedce9
Note that the command line you give will now throw an error
as you are specifying a gray color space ICC profile for
a pclm device which requires an RGB color space profile.