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** Changed in: imagemagick (Debian)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1707015

Title:
  image composite functions not working in php

Status in ImageMagick:
  Fix Released
Status in imagemagick source package in Trusty:
  Triaged
Status in imagemagick source package in Xenial:
  Triaged
Status in imagemagick package in Debian:
  Fix Released

Bug description:
  We use php-imagick to make image compositions on our servers.  On July
  25 we got an upgrade of imagemagick, from 6.8.9.9-7ubuntu5.7 to
  8:6.8.9.9-7ubuntu5.8.  After that upgrade our webservers, using the
  php imagick bindings, stopped making composites.  The composite images
  just have the background layer showing, with no overlay layer
  composited on top.

  In PHP there are no errors or exceptions, and other imagick functions
  work fine.  Reading images, scaling, making new images, rendering to
  bytes, all work fine.  It is only the composite functions, in php
  bindings, that are not working.

  I downgraded our webservers to imagemagick 6.8.9.9-7ubuntu5, which is
  still available in the ubuntu archives, and the php composite
  functions started working again.  6.8.9.9-7ubuntu5.7 is no longer
  available in the archives
  (http://security.ubuntu.com/ubuntu/pool/main/i/imagemagick/).

  A test script to reproduce the bug is attached to this ticket.  On
  version 6.8.9.9-7ubuntu5 this will show the ubuntu logo over a gray
  background.  On the latest version, 6.8.9.9-7ubuntu5.8, this will show
  garbled fragments of the ubuntu logo over gray background, or perhaps
  just an empty gray background.

  This bug was identified on Ubuntu 16.04.2 LTS as a result of an
  automatic upgrade from ubuntu security.

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