Bug#801781: kate: Error in `kate': free(): invalid pointer

[Salvo Tomaselli <tiposchi@tiscali.it>]

Package: kate
Version: 4:15.08.1-1
Severity: grave
Justification: renders package unusable

Dear Maintainer,
after the last round of kde updates, kate krashes all the time

> *** Error in `kate': free(): invalid pointer: 0x00007fbd00000e50 ***

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.2.1a (SMP w/4 CPU cores; PREEMPT)
Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages kate depends on:
ii  kate5-data                               4:15.08.1-1
ii  ktexteditor-katepart                     5.15.0-1
ii  libc6                                    2.19-22
ii  libgit2-23                               0.23.1-1
ii  libkf5activities5                        5.15.0-1
ii  libkf5bookmarks5                         5.15.0-1
ii  libkf5completion5                        5.15.0-1
ii  libkf5configcore5                        5.15.0-1
ii  libkf5configgui5                         5.15.0-1
ii  libkf5configwidgets5                     5.15.0-1
ii  libkf5coreaddons5                        5.15.0-1
ii  libkf5dbusaddons5                        5.15.0-1
ii  libkf5guiaddons5                         5.15.0-1
ii  libkf5i18n5                              5.15.0-1
ii  libkf5iconthemes5                        5.15.0-1
ii  libkf5itemmodels5                        5.15.0-1
ii  libkf5jobwidgets5                        5.15.0-1
ii  libkf5kiocore5                           5.15.0-1
ii  libkf5kiofilewidgets5                    5.15.0-1
ii  libkf5kiowidgets5                        5.15.0-1
ii  libkf5newstuff5                          5.15.0-1
ii  libkf5notifications5                     5.15.0-1
ii  libkf5parts5                             5.15.0-1
ii  libkf5plasma5                            5.15.0-1
ii  libkf5service5                           5.15.0+-1
ii  libkf5texteditor5                        5.15.0-1
ii  libkf5textwidgets5                       5.15.0-1
ii  libkf5threadweaver5                      5.15.0-1
ii  libkf5wallet-bin                         5.15.0-1
ii  libkf5wallet5                            5.15.0-1
ii  libkf5widgetsaddons5                     5.15.0-1
ii  libkf5windowsystem5                      5.15.0-1
ii  libkf5xmlgui5                            5.15.0-1
ii  libqt5core5a                             5.4.2+dfsg-9
ii  libqt5dbus5                              5.4.2+dfsg-9
ii  libqt5gui5                               5.4.2+dfsg-9
ii  libqt5sql5                               5.4.2+dfsg-9
ii  libqt5widgets5                           5.4.2+dfsg-9
ii  libqt5xml5                               5.4.2+dfsg-9
ii  libstdc++6                               5.2.1-22
ii  plasma-framework                         5.15.0-1
ii  qml-module-org-kde-kquickcontrolsaddons  5.15.0-1
ii  qml-module-qtquick-layouts               5.4.2-2+b1
ii  qml-module-qtquick2                      5.4.2-6

kate recommends no packages.

Versions of packages kate suggests:
ii  aspell         0.60.7~20110707-3
pn  khelpcenter    <none>
ii  konsole-kpart  4:15.08.1-1

-- no debconf information