Bug 51954 - ghostscript race condition
ghostscript race condition
Product: Red Hat Linux
Classification: Retired
Component: ghostscript (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Crutcher Dunnavant
Aaron Brown
Depends On:
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Reported: 2001-08-17 10:52 EDT by Chris Jones
Modified: 2007-04-18 12:36 EDT (History)
0 users

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2001-08-17 11:14:01 EDT
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Description Chris Jones 2001-08-17 10:52:05 EDT
Description of Problem:
Using ghostscript to distill postscript produced by Windows/Adobe 
Postscript printer drivers, I've found that some documents cause 
ghostscript to enter some kind of race condition where it consumes 100% 
CPU without actually appearing to do anything useful.

Version-Release number of selected component (if applicable):

How Reproducible:
I can provide a document that will tickle this bug, however, I am not able 
to post it publically because it contains private information. I will be 
happy to send the document to whomever is assigned this bug.

Steps to Reproduce:

Actual Results:

Expected Results:

Additional Information:
Comment 1 Chris Jones 2001-08-17 11:13:57 EDT
Having checked with our legal eagles I'm sad to report that I can't even send 
the document privately because of the UK Data Protection Act.

I'm going to play around with it and see if I can remove the private data and 
still reproduce the bug, failing that, what can I do to provide you with enough 
information to be able to investigate?
Comment 2 Crutcher Dunnavant 2001-09-25 12:03:21 EDT
This is not surprising. PostScript is a production language, and as such, is
succeptable to the halting problem. Some documents don't ever finish. A brief
example follows:

/loop { 1 add dup == loop } def
1 loop

Without an example document which _should_ finish, but does not, I am closing this.

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