Re: [dev] [dmenu] 4.9 segfault on input

From: Jordan Timmerman <skorlir_AT_gmail.com>
Date: Thu, 7 Feb 2019 22:59:24 -0600

Thanks, Donald.

My `ldd` output includes all the same libraries as yours, although the
addresses of the libraries of course differ.

I'm pretty confident at this point that the segfault occurs during the
call to libx11 XmbLookupString. I've attempted downgrading libx11 from
1.6.7 to 1.6.6 and rebuilding, but this makes no difference. For
whatever reason, dmenu 4.8 works, and dmenu 4.9 segfaults on keypress.
I might look into it again later, but for now I'll downgrade back to
dmenu 4.8 and get on with life. :)

On Thu, Feb 7, 2019 at 10:37 PM Donald Allen <donaldcallen_AT_gmail.com> wrote:
>
> On Thu, 7 Feb 2019 at 23:33, Jordan Timmerman <skorlir_AT_gmail.com> wrote:
> >
> > Doing a print-based line-by-line binary search indicates the segfault
> > occurs during a call to XmbLookupString.
> >
> > Does that ring any alarm bells for anyone?
> >
> > Seems to imply there's some kind of problem in my version of that X
> > library, whichever one it is. Will keep looking.
>
> Here's the output of ldd for dmenu on my system, showing all library
> dependencies:
>
> dca_AT_franz:~$ ldd `which dmenu`
> linux-vdso.so.1 (0x00007fff933d0000)
> libX11.so.6 => /usr/lib/libX11.so.6 (0x00007f2042e7d000)
> libXinerama.so.1 => /usr/lib/libXinerama.so.1 (0x00007f2042c7a000)
> libfontconfig.so.1 => /usr/lib/libfontconfig.so.1 (0x00007f2042c33000)
> libXft.so.2 => /usr/lib/libXft.so.2 (0x00007f2042a1d000)
> libc.so.6 => /usr/lib/libc.so.6 (0x00007f2042859000)
> libxcb.so.1 => /usr/lib/libxcb.so.1 (0x00007f204282f000)
> libdl.so.2 => /usr/lib/libdl.so.2 (0x00007f2042828000)
> libXext.so.6 => /usr/lib/libXext.so.6 (0x00007f2042616000)
> libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0x00007f204234d000)
> libexpat.so.1 => /usr/lib/libexpat.so.1 (0x00007f2042311000)
> libuuid.so.1 => /usr/lib/libuuid.so.1 (0x00007f2042308000)
> libpthread.so.0 => /usr/lib/libpthread.so.0 (0x00007f20422e7000)
> libXrender.so.1 => /usr/lib/libXrender.so.1 (0x00007f20422d8000)
> /lib64/ld-linux-x86-64.so.2 => /usr/lib64/ld-linux-x86-64.so.2
> (0x00007f2042ff5000)
> libXau.so.6 => /usr/lib/libXau.so.6 (0x00007f20420d4000)
> libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0x00007f2041ece000)
> libbz2.so.1.0 => /usr/lib/libbz2.so.1.0 (0x00007f2041ebb000)
> libpng16.so.16 => /usr/lib/libpng16.so.16 (0x00007f2041e83000)
> libz.so.1 => /usr/lib/libz.so.1 (0x00007f2041c6c000)
> libharfbuzz.so.0 => /usr/lib/libharfbuzz.so.0 (0x00007f2041b6e000)
> libm.so.6 => /usr/lib/libm.so.6 (0x00007f20419e9000)
> libglib-2.0.so.0 => /usr/lib/libglib-2.0.so.0 (0x00007f20418c6000)
> libgraphite2.so.3 => /usr/lib/libgraphite2.so.3 (0x00007f20418a1000)
> libpcre.so.1 => /usr/lib/libpcre.so.1 (0x00007f204182e000)
>
> You might want to compare with the output of ldd `which dmenu` on your system.
>
> >
> > On Thu, Feb 7, 2019 at 10:19 PM Jordan Timmerman <skorlir_AT_gmail.com> wrote:
> > >
> > > Well shucks. Okay. Thanks for trying! Must be something on my end.
> > > Perhaps the version of a dynamically linked library could be affecting
> > > it?
> > >
> > > On Thu, Feb 7, 2019 at 10:13 PM Donald Allen <donaldcallen_AT_gmail.com> wrote:
> > > >
> > > > On Thu, 7 Feb 2019 at 22:58, Jordan Timmerman <skorlir_AT_gmail.com> wrote:
> > > > >
> > > > > Hi Anselm,
> > > > >
> > > > > I run the following script:
> > > > >
> > > > > echo 'a\nb\nc' | dmenu
> > > > >
> > > > > I then press Enter. The program segaults.
> > > >
> > > > I just did this on an up-to-date Arch Linux system with dmenu 4.9
> > > > installed and it does not seg-fault on my system.
> > > >
> > > > dca_AT_franz:/tmp$ echo 'a\nb\nc' | dmenu
> > > > a\nb\nc
> > > > dca_AT_franz:/tmp$
> > > >
> >
>
Received on Fri Feb 08 2019 - 05:59:24 CET