[vtkusers] More possible buffer overuns [was: VTK 4.2.1: some tests still fail on SuSE Linux 8.1]

[Henner Eisen]

Hi Andy,

 >Good catch. I fixed the file name issues. Could you please try to build
 >the CVS of VTK and test?

I retried the test with VTK nightly as of 2003-03-14. When I use the
same VTKData path, all IO tests pass. Thanks!


Then I did an additional stress test in order to detect possible other
pathname buffer overruns. I did `make test' twice, first with
an extremely short and then with an extremely long VTKData path.
The idea is that tests which pass with short but fail with long
path names are likely subject to a buffer overrun bug
(or at least to some other memory management related problem):


$ORIG  original path to VTKData directory
$SHORT extremely short  (11 characters) symlink path to VTKData directory
$LONG  extremely long (2461 characters) symlink path to VTKData directory

#save original DartTestfiles.txt
for i in */Testing/*/DartTestfile.txt; do j=$i.orig; cp $i $j; done

#run test with extremely short VTKData path
for i in */Testing/*/DartTestfile.txt; do j=$i.orig; sed 
'1,$s@'"$ORIG"@"$SHORT"@ < $j  > $i; done
make test

  99% tests passed, 2 tests failed out of 381

  The following tests FAILED:
          volRCClipPlanes-image
          volRCRotateClip-image
  make: *** [test] Error 2

#run test with extremely long VTKData path
for i in */Testing/*/DartTestfile.txt; do j=$i.orig; sed '1,$s@'"$ORIG"@"$LONG"@ 
< $j  > $i; done

  92% tests passed, 29 tests failed out of 381

  The following tests FAILED:
          clipImage-image
          edgePoints-image
          EnSight6Elements-image
          EnSight6OfficeBin-image
          EnSightGoldElements-image
          EnSightBlow1ASCII-image
          EnSightBlow1Bin-image
          EnSightBlow2ASCII-image
          EnSightBlow2Bin-image
          EnSightBlow3Bin-image
          EnSightBlow4Bin-image
          EnSightBlow5ASCII-image
          EnSightIronProtASCII-image
          EnSightIronProtBin-image
          EnSightOfficeASCII-image
          EnSightOfficeBin-image
          EnSightRectGridASCII-image
          EnSightRectGridBin-image
          EnSightMandelbrot-image
          EnSightSelectArrays-image
          EnSightCompound-image
          nacaBinary-image
          skinOrder-image
          resampledTexture-image
          labeledContours-image
          volRCClipPlanes-image
          volRCRotateClip-image
          ImagePlaneWidget
          TestSplineWidget
  make: *** [test] Error 29

There are no new difference images with respect to the short path test.

Henner


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