[Poppler-bugs] [Bug 54945] New: High consume of resources when keeping a text selected in a PDF

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=54945

             Bug #: 54945
           Summary: High consume of resources when keeping a text selected
                    in a PDF
    Classification: Unclassified
           Product: poppler
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: cairo backend
        AssignedTo: poppler-bugs at lists.freedesktop.org
        ReportedBy: gpoo at gnome.org


Created attachment 67188
  --> https://bugs.freedesktop.org/attachment.cgi?id=67188
PDF test case

This bug was reported in GNOME Bugzilla, it seems it was also reported in Red
Hat's Bugzilla.

The PDF attached has Type3 fonts.  When the text is selected (and it is kept
selected), the consumption of memory increases notoriously.  It depends on
scale of the render, though.

For instance, using poppler-glib-demo (master b72c02d1a), with scale 2.0,
selecting randomly text for a couple of times and leaving the selection there,
it can consume 1GB of memory quickly.

It could be related to https://bugs.freedesktop.org/show_bug.cgi?id=54939. 
However, how fast increase the use of memory depends of the file.  So, I am not
sure.

The GNOME Bug is https://bugzilla.gnome.org/show_bug.cgi?id=581657#c3
(Notice that there are 2 issues discussed in that bug).

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