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List:       fop-dev
Subject:    [jira] [Commented] (FOP-3069) Empty <fo:table.body> results in infinite loop when strict-validation 
From:       "Michael Kainzbauer (Jira)" <jira () apache ! org>
Date:       2022-09-28 10:30:00
Message-ID: JIRA.13444803.1652434709000.343059.1664361000045 () Atlassian ! JIRA
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    [ https://issues.apache.org/jira/browse/FOP-3069?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17610484#comment-17610484 \
] 

Michael Kainzbauer commented on FOP-3069:
-----------------------------------------

[~ssteiner] Were you able to reproduce the issue with the updated code above or can I \
provide you more information?

> Empty <fo:table.body> results in infinite loop when strict-validation is set to \
>                 false
> -------------------------------------------------------------------------------------
>  
> Key: FOP-3069
> URL: https://issues.apache.org/jira/browse/FOP-3069
> Project: FOP
> Issue Type: Bug
> Components: fo/unqualified
> Affects Versions: 1.1, 2.0, 2.1, 2.2, 2.3, 2.4, 2.6, 2.7
> Reporter: Michael Kainzbauer
> Priority: Major
> 
> +_Since Apache FOP 1.1 (not reproducible in 1.0)_+
> When disabling strict-validation, ApacheFOP will loop infinitely when a \
> <fo:table.body> is empty, e.g.: <fo:table.body/> As a result in class
> {color:#57d9a3}org.apache.fop.layoutmgr.BlockContainerLayoutManager.getNextKnuthElements(LayoutContext \
> context, int alignment);{color} (line 111)
> is called infinitely.
> Yes, the XML-FO is incorrect and not according to the standard, but this is an \
> issue that can cause real trouble when the given conditions are met. Turning on \
> strict-validation will result in an error with a clear and understandable error \
> message: {quote}{color:#57d9a3}{{Error on line 26 column 29  }}{color}
> {color:#57d9a3}{{   SXCH0003   org.apache.fop.fo.ValidationException: \
> "fo:table-body" is missing child}}{color} {color:#57d9a3}{{   elements. Required \
> content model: marker* (table-row+|table-cell+) (Siehe Position 26:29).}}{color} \
> {color:#57d9a3}{{   Caused by org.apache.fop.fo.ValidationException: null:26:29: \
> "fo:table-body" is missing}}{color} {color:#57d9a3}{{   child elements. Required \
> content model: marker* (table-row+|table-cell+) (See position 26:29)}}{color} \
> {quote} Example XML-FO:
> {quote}<?xml version="1.0" encoding="UTF-8"?>
> <fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format">
> <fo:layout-master-set>
> <fo:simple-page-master master-name="A4-main" page-width="210mm" \
> page-height="297mm"> <fo:region-body margin-bottom="10mm" margin-left="20mm" \
> margin-right="5mm" margin-top="10mm"/> <fo:region-before extent="10mm" \
> region-name="main-reg-before"/> <fo:region-after extent="10mm" \
> region-name="main-reg-after"/> </fo:simple-page-master>
> <fo:page-sequence-master master-name="basic">
> <fo:repeatable-page-master-alternatives>
> <fo:conditional-page-master-reference master-reference="A4-main" \
> page-position="any"/> </fo:repeatable-page-master-alternatives>
> </fo:page-sequence-master>
> </fo:layout-master-set>
> <fo:page-sequence master-reference="basic">
> <fo:static-content flow-name="main-reg-before">
> <fo:block/>
> </fo:static-content>
> <fo:static-content flow-name="main-reg-after">
> <fo:block/>
> </fo:static-content>
> <fo:flow flow-name="xsl-region-body">
> <fo:block-container>
> <fo:block-container>
> <fo:table>
> <fo:table-body/>
> </fo:table>
> </fo:block-container>
> </fo:block-container>
> </fo:flow>
> </fo:page-sequence>
> </fo:root>{quote}
> 
> 



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