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https://issues.apache.org/jira/browse/PDFBOX-2925?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Tilman Hausherr resolved PDFBOX-2925.
-------------------------------------
Resolution: Fixed
> EmptyStackException in PDFStreamEngine.getColorSpaces
> -----------------------------------------------------
>
> Key: PDFBOX-2925
> URL: https://issues.apache.org/jira/browse/PDFBOX-2925
> Project: PDFBox
> Issue Type: Bug
> Components: Preflight
> Affects Versions: 1.8.10
> Reporter: Tilman Hausherr
> Assignee: Tilman Hausherr
> Fix For: 1.8.11
>
> Attachments: example-manual-4.pdf
>
>
> From Abel S. in the user mailing list:
> I'm testing prawn generated PDFs (https://github.com/prawnpdf/prawn) and I
> have found that when trying to validate them with PreflightParser, I get an
> unchecked exception instead of an expected
> org.apache.pdfbox.preflight.exception.ValidationException.
> I attach the PDF (example-manual.pdf) and here is the stacktrace:
> {code}
> Exception in thread "main" java.util.EmptyStackException
> at java.util.Stack.peek(Stack.java:102)
> at
> org.apache.pdfbox.util.PDFStreamEngine.getColorSpaces(PDFStreamEngine.java:579)
> at
> org.apache.pdfbox.util.operator.SetNonStrokingColorSpace.process(SetNonStrokingColorSpace.java:50)
> at
> org.apache.pdfbox.preflight.content.ContentStreamWrapper.processOperator(ContentStreamWrapper.java:162)
> at
> org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:268)
> at
> org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:244)
> at
> org.apache.pdfbox.preflight.content.ContentStreamWrapper.validXObjContentStream(ContentStreamWrapper.java:100)
> at
> org.apache.pdfbox.preflight.xobject.XObjFormValidator.validateXObjectContent(XObjFormValidator.java:113)
> at
> org.apache.pdfbox.preflight.xobject.XObjFormValidator.validate(XObjFormValidator.java:76)
> at
> org.apache.pdfbox.preflight.process.reflect.GraphicObjectPageValidationProcess.validate(GraphicObjectPageValidationProcess.java:77)
> at
> org.apache.pdfbox.preflight.utils.ContextHelper.callValidation(ContextHelper.java:81)
> at
> org.apache.pdfbox.preflight.utils.ContextHelper.validateElement(ContextHelper.java:54)
> at
> org.apache.pdfbox.preflight.process.reflect.ResourcesValidationProcess.validateXObjects(ResourcesValidationProcess.java:191)
> at
> org.apache.pdfbox.preflight.process.reflect.ResourcesValidationProcess.validate(ResourcesValidationProcess.java:78)
> at
> org.apache.pdfbox.preflight.utils.ContextHelper.callValidation(ContextHelper.java:81)
> at
> org.apache.pdfbox.preflight.utils.ContextHelper.validateElement(ContextHelper.java:54)
> at
> org.apache.pdfbox.preflight.process.reflect.SinglePageValidationProcess.validateResources(SinglePageValidationProcess.java:163)
> at
> org.apache.pdfbox.preflight.process.reflect.SinglePageValidationProcess.validate(SinglePageValidationProcess.java:82)
> at
> org.apache.pdfbox.preflight.utils.ContextHelper.callValidation(ContextHelper.java:81)
> at
> org.apache.pdfbox.preflight.utils.ContextHelper.validateElement(ContextHelper.java:54)
> at
> org.apache.pdfbox.preflight.process.PageTreeValidationProcess.validatePage(PageTreeValidationProcess.java:58)
> at
> org.apache.pdfbox.preflight.process.PageTreeValidationProcess.validate(PageTreeValidationProcess.java:47)
> at
> org.apache.pdfbox.preflight.utils.ContextHelper.callValidation(ContextHelper.java:81)
> at
> org.apache.pdfbox.preflight.utils.ContextHelper.validateElement(ContextHelper.java:96)
> at
> org.apache.pdfbox.preflight.PreflightDocument.validate(PreflightDocument.java:168)
> {code}
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