[gs-bugs] [Bug 691484] New: Valgrind shows use of uninitialised memory in clist code

bugzilla-daemon at ghostscript.com bugzilla-daemon at ghostscript.com
Wed Jul 21 18:28:32 UTC 2010


           Summary: Valgrind shows use of uninitialised memory in clist
           Product: Ghostscript
           Version: HEAD
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P4
         Component: Graphics Library
        AssignedTo: support at artifex.com
        ReportedBy: robin.watts at artifex.com
         QAContact: gs-bugs at ghostscript.com
   Estimated Hours: 0.0

In investigating an intermittent SEGV reported by a customer on windows, I
tried running the same files using the same invocation on Linux under Valgrind.

Use of uninitialised memory values was shown in 2 basic cases both within
command list processing.

The command in question is:

valgrind --track-origins=yes debugobj/gs -P- -dBATCH -dNOPAUSE -Z: -r300x300
-sOUTPUTFILE=out.tif -sDEVICE=tiff24nc -dFirstPage=1 -dLastPage=1 -dUseCropBox
-d.IgnoreNumCopies=true -c 500000000 setvmthreshold \(test.pdf\) run

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