Your message dated Fri, 18 Feb 2011 11:26:15 +0100
with message-id <[email protected]>
and subject line Recent ghostscript use shared libjpeg
has caused the Debian Bug report #582522,
regarding libjpeg8: Please provide variant compiled with #define
D_MAX_BLOCKS_IN_MCU 64
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582522: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=582522
Debian Bug Tracking System
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--- Begin Message ---
Source: libjpeg8
Version: 8b-1
Severity: normal
Hi,
Ghostscript currently[1] use a local copy of libjpeg. This is explained
in the following snippet from its documentation:
> we have also provided the ability to [link against system library]
> with the JPEG library (SHARE_JPEG), but should not use it: in order to
> be compatible with Adobe interpreters (which do not follow the JPEG
> standard exactly), Ghostscript has to compile the IJG code with the
> non-standard definition
>
> #define D_MAX_BLOCKS_IN_MCU 64
>
> and since shared versions of this library will not have been compiled
> this way, you will get errors on some valid PostScript and PDF input
> files.
For security reasons I would prefer that the Debian packaging of
Ghostscript could link against the shared libjpeg library, which brings
me to this request:
Please provide a variant of libjpeg with above definition declared, so
that Ghostscript (and perhaps other projects as well?) can use the
shared code while still staying compatible with non-standard Adobe
Postscript files.
Kind regards,
- Jonas
Ghostscript package maintainer
[1] Actually, right now ghostscript links against shared libjpeg62, but
bug#582417 made me look closer and realize that this is bad, so propably
will switch back to using the internal code if this issue cannot be
solved quick.
--- End Message ---
--- Begin Message ---
Version: 9.01~dfsg-1
Ghostscript since version 9.01~dfsg-1 links against system shared
libjpeg - favoring the security concern (a.k.a. inconvenience) of
duplicated code higher than that of respecting ancient standards
violations of commercial PDF generator implementations.
- Jonas
--
* Jonas Smedegaard - idealist & Internet-arkitekt
* Tlf.: +45 40843136 Website: http://dr.jones.dk/
[x] quote me freely [ ] ask before reusing [ ] keep private
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