Comment 5 for bug 1359715

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Lionel B (trader-lionelb) wrote : Re: [Bug 1359715] Re: Ghostscript runaway memory consumption during font search

Hi Marc,

Yes, it seems to be fixed now on my current system (Ubuntu 16.04.5).
On invoking DoFont with a non-existent font, a sample response is:

--------------------------------------------------------------------------------
GS>/xyz DoFont
Querying operating system for font files...
Can't find (or can't open) font file %rom%Resource/Font/xyz.
Can't find (or can't open) font file xyz.
Didn't find this font on the system!
Substituting font Courier for xyz.
Loading NimbusMonoPS-Regular font from
%rom%Resource/Font/NimbusMonoPS-Regular... 4619540 3276395 9786160
4453839 1 done.
>>showpage, press <return> to continue<<
--------------------------------------------------------------------------------

no hang, and a font is displayed in the 'ghostscript' window.

So seems to be working correctly in an expected way.

Cheers,
Lionel

On Tue, 2 Oct 2018 at 15:05, Marc Deslauriers
<email address hidden> wrote:
>
> Hello, thanks for reporting this issue.
> Ghostscript has been updated to 9.25 in current releases of Ubuntu.
>
> Could you please verify that your issue has been resolved, and update
> this bug accordingly?
>
> Thanks!
>
>
> ** Changed in: ghostscript (Ubuntu)
> Status: New => Incomplete
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1359715
>
> Title:
> Ghostscript runaway memory consumption during font search
>
> Status in ghostscript package in Ubuntu:
> Incomplete
>
> Bug description:
> Linux Mint 17 (Qiana), Cinnamon 64-bit, kernel 3.13.0-24-generic #47-Ubuntu SMP x86_64 x86_64 x86_64 GNU/Linux
> Ghostscript version 9.10
>
> When Ghostscript searches for a specified font, if that font is not
> found in the Fontmap file, memory consumption shoots up, the system
> starts swapping and hangs.
>
> Tested on system (see above) with ~ 2GB memory.
>
> A simple way to reproduce, is to use the following procedure to
> attempt to display a font:
>
> 1) Invoke ghostscript on 'prfont.ps'
>
> $ gs /usr/share/ghostscript/9.10/lib/prfont.ps
> GPL Ghostscript 9.10 (2013-08-30)
> Copyright (C) 2013 Artifex Software, Inc. All rights reserved.
> This software comes with NO WARRANTY: see the file PUBLIC for details.
> Loading NimbusRomNo9L-Regu font from /usr/share/fonts/type1/gsfonts/n021003l.pfb... 3896292 2355421 3853784 2540955 1 done.
> GS>
>
> 2) At Ghostscript prompt, specify a random fontname - which we know
> does not exist - to 'DoFont':
>
> GS>/Somefont DoFont
> Can't find (or can't open) font file /usr/share/ghostscript/9.10/Resource/Font/Somefont.
> Can't find (or can't open) font file Somefont.
> Querying operating system for font files...
>
> Result: memory usage maxes out, system swaps and hangs.
>
> I expected Ghostscript to conclude the font search (without
> exhausating system resources!) and to report failure to locate the
> specified font.
>
> This problem always occurs, and affects any other program which
> invokes ghostscript and triggers a font search.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/ghostscript/+bug/1359715/+subscriptions