[okular] [Bug 275203] okular crashes when reading some *.chm files

[Mihail Kasadjikov]

https://bugs.kde.org/show_bug.cgi?id=275203

--- Comment #26 from Mihail Kasadjikov <hamer.mk at gmail.com> ---
Hi.

Now I still use the old KDE4, okular, chm backend and so on (debian jessie).
But Xserver, mesa and gcc are fresh. And now okular works without crashes.

$ dpkg -l okular* libchm1 *mesa* xserver* libgcc1 libstdc++6 | awk '/^ii/{print
$2" "$3}' | column -t
glx-alternative-mesa        0.8.0+nmu1
libchm1                     2:0.40a-3+b1
libegl-mesa0:amd64          20.3.0-1
libegl-mesa0:i386           20.3.0-1
libegl1-mesa:amd64          20.3.0-1
libegl1-mesa:i386           20.3.0-1
libgcc1:amd64               1:9.3.0-11ubuntu0~14.04
libgcc1:i386                1:9.3.0-11ubuntu0~14.04
libgl1-mesa-dri:amd64       20.3.0-1
libgl1-mesa-dri:i386        20.3.0-1
libgl1-mesa-glx:amd64       20.3.0-1
libgl1-mesa-glx:i386        20.3.0-1
libglapi-mesa:amd64         20.3.0-1
libglapi-mesa:i386          20.3.0-1
libgles2-mesa:amd64         20.3.0-1
libgles2-mesa:i386          20.3.0-1
libglu1-mesa:amd64          9.0.0-2
libglu1-mesa:i386           9.0.0-2
libglx-mesa0:amd64          20.3.0-1
libglx-mesa0:i386           20.3.0-1
libosmesa6:amd64            20.3.0-1
libosmesa6:i386             20.3.0-1
libstdc++6:amd64            9.3.0-11ubuntu0~14.04
libstdc++6:i386             9.3.0-11ubuntu0~14.04
libwayland-egl1-mesa:amd64  20.3.0-1
mesa-common-dev:amd64       20.3.0-1
mesa-utils                  8.2.0-1
mesa-va-drivers:amd64       20.3.0-1
mesa-va-drivers:i386        20.3.0-1
mesa-vdpau-drivers:amd64    20.3.0-1
mesa-vulkan-drivers:amd64   20.3.0-1
mesa-vulkan-drivers:i386    20.3.0-1
okular                      4:16.08.2-1.1
okular-extra-backends       4:16.08.2-1.1
xserver-common              2:1.20.9-2.1
xserver-xephyr              2:1.20.9-2.1
xserver-xorg                1:7.7+16.1
xserver-xorg-core           2:1.20.9-2.1
xserver-xorg-core-dbgsym    2:1.20.9-2.1
xserver-xorg-input-evdev    1:2.10.4-1.1
xserver-xorg-input-kbd      1:1.9.0-1.1
xserver-xorg-input-mouse    1:1.9.2-1.1
xserver-xorg-legacy         2:1.20.9-2.1
xserver-xorg-video-amdgpu   19.1.0-2.1
xserver-xorg-video-radeon   1:7.10.0-1

Maybe this bug related to difference in SSE2 implementation in intel and AMD.
The same problem was investigated and solved for game Mass Effect for example:
https://cookieplmonster.github.io/2020/07/19/silentpatch-mass-effect/

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