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bug#22916: 25.0.92; eww completely hangs Emacs on "invalid" png image


From: Elric Milon
Subject: bug#22916: 25.0.92; eww completely hangs Emacs on "invalid" png image
Date: Sun, 29 Jan 2017 10:17:31 +0100
User-agent: mu4e 0.9.18; emacs 25.1.1


Eli Zaretskii <address@hidden> writes:

>> But it's unusable for me (The whole Emacs frame blinks on and off with the 
>> cursor).
>
> Please try disabling the double-buffering feature, like this:
>
>   M-: (modify-frame-parameters nil '((inhibit-double-buffering . t))) RET
>
> Alternatively, edit src/config.h to delete this line:
>
>   #define HAVE_XDBE 1
>
> and then rebuild Emacs.  Please tell if the problem goes away when you
> try that.


I tried the first option and it mostly works except for some garbage
left behind when using helm (see right window on attached screenshot).
If I unmap and remap the Emacs X window by switching to and from a
different virtual desktop, the garbage is gone.

If I open a .jpg with this emacs build I get this message:

     Cannot display image: (This Emacs mishandles this image file type)

And the file opens in Fundamental mode.

This is the output of `ldd bin/emacs`:

        linux-vdso.so.1 (0x00007ffefb096000)
        libtiff.so.5 => /usr/lib/x86_64-linux-gnu/libtiff.so.5 
(0x00007f80ee45a000)
        libjpeg.so.62 => /usr/lib/x86_64-linux-gnu/libjpeg.so.62 
(0x00007f80ee1ef000)
        libpng16.so.16 => /usr/lib/x86_64-linux-gnu/libpng16.so.16 
(0x00007f80edfbc000)
        libgif.so.7 => /usr/lib/x86_64-linux-gnu/libgif.so.7 
(0x00007f80eddb2000)
        libXpm.so.4 => /usr/lib/x86_64-linux-gnu/libXpm.so.4 
(0x00007f80edba0000)
        libgtk-3.so.0 => /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 
(0x00007f80ed289000)
        libgdk-3.so.0 => /usr/lib/x86_64-linux-gnu/libgdk-3.so.0 
(0x00007f80ecf92000)
        libpangocairo-1.0.so.0 => 
/usr/lib/x86_64-linux-gnu/libpangocairo-1.0.so.0 (0x00007f80ecd85000)
        libpango-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0 
(0x00007f80ecb39000)
        libatk-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libatk-1.0.so.0 
(0x00007f80ec913000)
        libcairo-gobject.so.2 => 
/usr/lib/x86_64-linux-gnu/libcairo-gobject.so.2 (0x00007f80ec70a000)
        libcairo.so.2 => /usr/lib/x86_64-linux-gnu/libcairo.so.2 
(0x00007f80ec3f4000)
        libgdk_pixbuf-2.0.so.0 => 
/usr/lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0 (0x00007f80ec1d1000)
        libgio-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0 
(0x00007f80ebe3c000)
        libgobject-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 
(0x00007f80ebbe9000)
        libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 
(0x00007f80eb8d5000)
        libSM.so.6 => /usr/lib/x86_64-linux-gnu/libSM.so.6 (0x00007f80eb6cd000)
        libICE.so.6 => /usr/lib/x86_64-linux-gnu/libICE.so.6 
(0x00007f80eb4ae000)
        libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 
(0x00007f80eb16e000)
        libX11-xcb.so.1 => /usr/lib/x86_64-linux-gnu/libX11-xcb.so.1 
(0x00007f80eaf6c000)
        libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 
(0x00007f80ead44000)
        libXrender.so.1 => /usr/lib/x86_64-linux-gnu/libXrender.so.1 
(0x00007f80eab3a000)
        libXft.so.2 => /usr/lib/x86_64-linux-gnu/libXft.so.2 
(0x00007f80ea924000)
        libasound.so.2 => /usr/lib/x86_64-linux-gnu/libasound.so.2 
(0x00007f80ea615000)
        librsvg-2.so.2 => /usr/lib/x86_64-linux-gnu/librsvg-2.so.2 
(0x00007f80ea3df000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f80ea0db000)
        libMagickWand-6.Q16.so.3 => 
/usr/lib/x86_64-linux-gnu/libMagickWand-6.Q16.so.3 (0x00007f80e9db2000)
        libMagickCore-6.Q16.so.3 => 
/usr/lib/x86_64-linux-gnu/libMagickCore-6.Q16.so.3 (0x00007f80e98e6000)
        libacl.so.1 => /lib/x86_64-linux-gnu/libacl.so.1 (0x00007f80e96dd000)
        librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f80e94d3000)
        libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3 
(0x00007f80e9284000)
        libXrandr.so.2 => /usr/lib/x86_64-linux-gnu/libXrandr.so.2 
(0x00007f80e9079000)
        libXinerama.so.1 => /usr/lib/x86_64-linux-gnu/libXinerama.so.1 
(0x00007f80e8e76000)
        libXfixes.so.3 => /usr/lib/x86_64-linux-gnu/libXfixes.so.3 
(0x00007f80e8c70000)
        libXext.so.6 => /usr/lib/x86_64-linux-gnu/libXext.so.6 
(0x00007f80e8a5e000)
        libxml2.so.2 => /usr/lib/x86_64-linux-gnu/libxml2.so.2 
(0x00007f80e86a1000)
        libgpm.so.2 => /usr/lib/x86_64-linux-gnu/libgpm.so.2 
(0x00007f80e849b000)
        libtinfo.so.5 => /lib/x86_64-linux-gnu/libtinfo.so.5 
(0x00007f80e8271000)
        libgconf-2.so.4 => /usr/lib/x86_64-linux-gnu/libgconf-2.so.4 
(0x00007f80e8040000)
        libfreetype.so.6 => /usr/lib/x86_64-linux-gnu/libfreetype.so.6 
(0x00007f80e7d91000)
        libfontconfig.so.1 => /usr/lib/x86_64-linux-gnu/libfontconfig.so.1 
(0x00007f80e7b53000)
        libotf.so.0 => /usr/lib/x86_64-linux-gnu/libotf.so.0 
(0x00007f80e793b000)
        libm17n-core.so.0 => /usr/lib/x86_64-linux-gnu/libm17n-core.so.0 
(0x00007f80e770d000)
        libm17n-flt.so.0 => /usr/lib/x86_64-linux-gnu/libm17n-flt.so.0 
(0x00007f80e7502000)
        libgnutls.so.30 => /usr/lib/x86_64-linux-gnu/libgnutls.so.30 
(0x00007f80e7169000)
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 
(0x00007f80e6f4c000)
        libanl.so.1 => /lib/x86_64-linux-gnu/libanl.so.1 (0x00007f80e6d48000)
        libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f80e6b2c000)
        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f80e6928000)
        libgomp.so.1 => /usr/lib/x86_64-linux-gnu/libgomp.so.1 
(0x00007f80e66fb000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f80e635d000)
        liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f80e6137000)
        libjbig.so.0 => /usr/lib/x86_64-linux-gnu/libjbig.so.0 
(0x00007f80e5f28000)
        libgmodule-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgmodule-2.0.so.0 
(0x00007f80e5d22000)
        libXi.so.6 => /usr/lib/x86_64-linux-gnu/libXi.so.6 (0x00007f80e5b12000)
        libXcomposite.so.1 => /usr/lib/x86_64-linux-gnu/libXcomposite.so.1 
(0x00007f80e590f000)
        libXdamage.so.1 => /usr/lib/x86_64-linux-gnu/libXdamage.so.1 
(0x00007f80e570c000)
        libatk-bridge-2.0.so.0 => 
/usr/lib/x86_64-linux-gnu/libatk-bridge-2.0.so.0 (0x00007f80e54dd000)
        libxkbcommon.so.0 => /usr/lib/x86_64-linux-gnu/libxkbcommon.so.0 
(0x00007f80e529d000)
        libwayland-cursor.so.0 => 
/usr/lib/x86_64-linux-gnu/libwayland-cursor.so.0 (0x00007f80e5093000)
        libwayland-egl.so.1 => /usr/lib/x86_64-linux-gnu/libwayland-egl.so.1 
(0x00007f80e4e91000)
        libwayland-client.so.0 => 
/usr/lib/x86_64-linux-gnu/libwayland-client.so.0 (0x00007f80e4c82000)
        libepoxy.so.0 => /usr/lib/x86_64-linux-gnu/libepoxy.so.0 
(0x00007f80e498c000)
        libpangoft2-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libpangoft2-1.0.so.0 
(0x00007f80e4776000)
        libXcursor.so.1 => /usr/lib/x86_64-linux-gnu/libXcursor.so.1 
(0x00007f80e456b000)
        libgthread-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgthread-2.0.so.0 
(0x00007f80e4367000)
        libthai.so.0 => /usr/lib/x86_64-linux-gnu/libthai.so.0 
(0x00007f80e415d000)
        libpixman-1.so.0 => /usr/lib/x86_64-linux-gnu/libpixman-1.so.0 
(0x00007f80e3eb6000)
        libxcb-shm.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-shm.so.0 
(0x00007f80e3cb2000)
        libxcb-render.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-render.so.0 
(0x00007f80e3aa4000)
        libselinux.so.1 => /lib/x86_64-linux-gnu/libselinux.so.1 
(0x00007f80e387a000)
        libresolv.so.2 => /lib/x86_64-linux-gnu/libresolv.so.2 
(0x00007f80e3663000)
        libmount.so.1 => /lib/x86_64-linux-gnu/libmount.so.1 
(0x00007f80e3415000)
        libffi.so.6 => /usr/lib/x86_64-linux-gnu/libffi.so.6 
(0x00007f80e320c000)
        libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f80e2f99000)
        libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007f80e2d94000)
        libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 
(0x00007f80e2b8e000)
        libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 
(0x00007f80e2988000)
        /lib64/ld-linux-x86-64.so.2 (0x0000564f98a70000)
        libcroco-0.6.so.3 => /usr/lib/x86_64-linux-gnu/libcroco-0.6.so.3 
(0x00007f80e274d000)
        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 
(0x00007f80e2536000)
        liblcms2.so.2 => /usr/lib/x86_64-linux-gnu/liblcms2.so.2 
(0x00007f80e22da000)
        liblqr-1.so.0 => /usr/lib/x86_64-linux-gnu/liblqr-1.so.0 
(0x00007f80e20c1000)
        libfftw3.so.3 => /usr/lib/x86_64-linux-gnu/libfftw3.so.3 
(0x00007f80e1cc4000)
        libbz2.so.1.0 => /lib/x86_64-linux-gnu/libbz2.so.1.0 
(0x00007f80e1ab4000)
        libltdl.so.7 => /usr/lib/x86_64-linux-gnu/libltdl.so.7 
(0x00007f80e18aa000)
        libattr.so.1 => /lib/x86_64-linux-gnu/libattr.so.1 (0x00007f80e16a5000)
        libsystemd.so.0 => /lib/x86_64-linux-gnu/libsystemd.so.0 
(0x00007f80e161b000)
        libicui18n.so.57 => /usr/lib/x86_64-linux-gnu/libicui18n.so.57 
(0x00007f80e119f000)
        libicuuc.so.57 => /usr/lib/x86_64-linux-gnu/libicuuc.so.57 
(0x00007f80e0df7000)
        libicudata.so.57 => /usr/lib/x86_64-linux-gnu/libicudata.so.57 
(0x00007f80df37a000)
        libdbus-glib-1.so.2 => /usr/lib/x86_64-linux-gnu/libdbus-glib-1.so.2 
(0x00007f80df153000)
        libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 
(0x00007f80def29000)
        libp11-kit.so.0 => /usr/lib/x86_64-linux-gnu/libp11-kit.so.0 
(0x00007f80decc2000)
        libidn.so.11 => /lib/x86_64-linux-gnu/libidn.so.11 (0x00007f80dea8e000)
        libtasn1.so.6 => /usr/lib/x86_64-linux-gnu/libtasn1.so.6 
(0x00007f80de87b000)
        libnettle.so.6 => /usr/lib/x86_64-linux-gnu/libnettle.so.6 
(0x00007f80de644000)
        libhogweed.so.4 => /usr/lib/x86_64-linux-gnu/libhogweed.so.4 
(0x00007f80de40f000)
        libgmp.so.10 => /usr/lib/x86_64-linux-gnu/libgmp.so.10 
(0x00007f80de18c000)
        libatspi.so.0 => /usr/lib/x86_64-linux-gnu/libatspi.so.0 
(0x00007f80ddf59000)
        libharfbuzz.so.0 => /usr/lib/x86_64-linux-gnu/libharfbuzz.so.0 
(0x00007f80ddcc4000)
        libdatrie.so.1 => /usr/lib/x86_64-linux-gnu/libdatrie.so.1 
(0x00007f80ddabc000)
        libblkid.so.1 => /lib/x86_64-linux-gnu/libblkid.so.1 
(0x00007f80dd876000)
        liblz4.so.1 => /usr/lib/x86_64-linux-gnu/liblz4.so.1 
(0x00007f80dd662000)
        libgcrypt.so.20 => /lib/x86_64-linux-gnu/libgcrypt.so.20 
(0x00007f80dd353000)
        libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 
(0x00007f80dcfd1000)
        libgraphite2.so.3 => /usr/lib/x86_64-linux-gnu/libgraphite2.so.3 
(0x00007f80dcdab000)
        libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 
(0x00007f80dcb97000)

--
Elric Milon
PGP: 3939C2B494084E2F | https://whirm.eu





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