Bug 691166

Summary:	8.71 breaks efax, efax-gtk
Product:	Ghostscript	Reporter:	rich.atc
Component:	Regression	Assignee:	Lars Uebernickel <lars>
Status:	RESOLVED WONTFIX
Severity:	normal
Priority:	P4
Version:	8.71
Hardware:	PC
OS:	Linux
Customer:		Word Size:	---

Description rich.atc 2010-03-09 16:29:59 UTC

Attempt to fax pdf file results in:
efax-0.9a: 08:24:48 Error: can't read multi-strip TIFF files
efax-0.9a: 08:24:48 Error: missing offset to TIFF data
efax-0.9a: 08:24:48 finished - unrecoverable error

Downgrading to ghostscript 8.70 works as expected, without errors.

Comment 1 Marcos H. Woehrmann 2010-03-09 18:13:27 UTC

As I recall we discussed the issue of fax software not being able to read multi-strip tiff files via email/irc and that the decision was that we were going to write out single strip tiffs for small output files.  I assume from this bug that this isn't what was implemented.

Comment 2 Ray Johnston 2010-03-09 18:21:42 UTC

We changed all TIFF devices to use libtiff. Unfortunately this lib doesn't have a way to compress strips without buffering the entire strip, so the we changed (sort of at the last minute) to using a default MaxStripSize=8192 (see base/gdevtifs.h:53:#define TIFF_DEFAULT_STRIP_SIZE 8192)

Either change that line to 0 and rebuild, or use the command line option:
-dMaxStripSize=0

The problem is really that 'efax' is a non-compliant TIFF reader.

Closing as WONTFIX

Comment 3 rich.atc 2010-03-10 07:05:27 UTC

Thanks! Changing TIFF_DEFAULT_STRIP_SIZE to 0 and rebuilding works fine.