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List:       amarok-bugs-dist
Subject:    [amarok] [Bug 382456] New: amarock APL model with incomplete checkpoint crashes amarok
From:       <bugzilla_noreply () kde ! org>
Date:       2017-07-18 8:05:31
Message-ID: bug-382456-71684 () http ! bugs ! kde ! org/
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https://bugs.kde.org/show_bug.cgi?id=382456

            Bug ID: 382456
           Summary: amarock APL model with incomplete checkpoint crashes
                    amarok
           Product: amarok
           Version: 2.8.0
          Platform: Other
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Playlists/Automated Playlist Generator
          Assignee: amarok-bugs-dist@kde.org
          Reporter: p92@free.fr
                CC: stharward@gmail.com
  Target Milestone: 2.9

Created attachment 106703
  --> https://bugs.kde.org/attachment.cgi?id=106703&action=edit
the apl model with empty checkpoint condition that crashes amarok

amarok allows me to generate an incomplete model of APL using an incomplete
"checkpoint" constraint.

to reproduce start with for example this APL model :
pascal@minipc:~$ cat Musique/classiques3.xml 
<?xml version="1.0" encoding="UTF-8"?>
<playlistgenerator>
  <generatorpreset title="classiques3">
    <constrainttree>
      <group matchtype="all">
        <constraint field="genre" comparison="3" invert="false" type="TagMatch"
value="Classical" strictness="0.1"/>
      </group>
    </constrainttree>
  </generatorpreset>
</playlistgenerator>

then just 
add a "checkpoint" constraint to the constrainttree (see screenshot)
but do not select anything as checkpoint parameters, 
just adjust strictness of checkpoint to exact
click OK

the new model is saved

when editing this model you see the 2 constraints are there as in the
screenshot but when exporting this model to a file the "checkpoint" constraint
is absent !

now try to execute this model ==> amarok crashes 

running in debug mode gives this upon executing this incomplete model :

pascal@minipc:~$ amarok: [APG::ConstraintSolver] New ConstraintSolver with
serial number 967666005 
amarok: [APG::ConstraintNode] new constraint node at 0x31de3f90 with parent at
0x2f6023f0 
amarok: [APG::ConstraintSolver] Domain has 4376 tracks 
amarok: [APG::ConstraintSolver] Running ConstraintSolver 967666005 
amarok: Fatal IO error: client killed
Unable to start Dr. Konqi
Not forwarding the crash to Apport.

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