Bug 688444

Summary:	ghostscript chokes on specific imagemasks Acrobat generates
Product:	Ghostscript	Reporter:	Malte Cornils <malte>
Component:	PS Interpreter	Assignee:	Raph Levien <raph.levien>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	malte
Priority:	P3
Version:	8.53
Hardware:	PC
OS:	Linux
Customer:		Word Size:	---
Attachments:	Generated by Acroread 7, causes ps2ps to die on it Similar Acrobat 7-generated file, this time with just an image, not an imagemask. Works fine with ps2ps. Original PDF as exported from Scribus, way more readable, containing a masked image. Original PDF as exported from Scribus, way more readable, NOT containing a masked image.

Description Malte Cornils 2005-12-10 15:45:19 UTC

I've used the Scribus DTP program to generate one fairly simple PDF with an  
image, another with an image containing an imagemask. I've attached both. 
Having used Acroread 7 (on Linux) to print them as Lvl 2 postscript files, I 
tried to do a ps2ps on them. 
 
ps2ps works fine on the one without a mask, on the one containing the 
(pdf)imagemask, it dies with: 
mcornils@asus:~/imagemask$ ps2ps imagemask-acroprint.ps imagemask-acrops2ps.ps 
Error: /VMerror in --.imagemask1-- 
VM status: 2 922113 2256740 
Current allocation mode is local 
Last OS error: 2 
Current file position is 59458 
AFPL Ghostscript 8.53: Unrecoverable error, exit code 1 
 
Ugh!? VMError? 
 
I'll attach both the PDF files generated by Scribus and the ugly mess called 
"Postscript file" generated from that by Acroread 7, with and without the 
problem (the imagemask). My skills reading Postscript are not good enough to 
get closer to solving this bug, unfortunately.

Comment 1 Malte Cornils 2005-12-10 15:47:29 UTC

Created attachment 1853 [details]
Generated by Acroread 7, causes ps2ps to die on it

Comment 2 Malte Cornils 2005-12-10 15:49:15 UTC

Created attachment 1854 [details]
Similar Acrobat 7-generated file, this time with just an image, not an imagemask. Works fine with ps2ps.

Comment 3 Malte Cornils 2005-12-10 15:50:22 UTC

Created attachment 1855 [details]
Original PDF as exported from Scribus, way more readable, containing a masked image.

Comment 4 Malte Cornils 2005-12-10 15:51:04 UTC

Created attachment 1856 [details]
Original PDF as exported from Scribus, way more readable, NOT containing a masked image.

Comment 5 Alex Cherepanov 2005-12-11 03:15:27 UTC

This is another case of an excessively big pattern cell but the fix the bug
687434 is ineffective here. All corners of the pattern BBox fall on the page and
the BBox remains unchanged, which causes an attempt to allocate 3GB for the
pattern accumulator.

Perhaps, Ghostscript can implement an unbuffered pattern rendering or modify the
pattern paint function to have a single pattern cell per page for big patterns.

Comment 6 Ray Johnston 2006-03-21 22:02:02 UTC


*** This bug has been marked as a duplicate of 688396 ***