Not particularly useful unfortunately, do you have LD_LIBRARY_PATH or
whatever set?



On Fri, Jan 13, 2017 at 04:13:30PM +0000, Kaushal Modi wrote:
>    Here's what I get:
>    > gdb tmux core.8841
>    GNU gdb (GDB) Red Hat Enterprise Linux (7.2-75.el6)
>    Copyright (C) 2010 Free Software Foundation, Inc.
>    License GPLv3+: GNU GPL version 3 or later
>    <[1]http://gnu.org/licenses/gpl.html>
>    This is free software: you are free to change and redistribute it.
>    There is NO WARRANTY, to the extent permitted by law.** Type "show
>    copying"
>    and "show warranty" for details.
>    This GDB was configured as "x86_64-redhat-linux-gnu".
>    For bug reporting instructions, please see:
>    <[2]http://www.gnu.org/software/gdb/bugs/>...
>    Reading symbols from /cad/abc/apps/gnu/linux/x86_64/6/bin/tmux...(no
>    debugging symbols found)...done.
>    warning: core file may not match specified executable file.
>    [New Thread 8841]
>    Missing separate debuginfo for /dgagent/lib64/preload.so
>    Try: yum --enablerepo='*-debug*' install
>    /usr/lib/debug/.build-id/c8/6a4819d6051f6303e89794963394b6ec709996
>    Missing separate debuginfo for
>    /cad/abc/apps/gnu/linux/x86_64/6/lib/libevent-2.0.so.5
>    Try: yum --enablerepo='*-debug*' install
>    /usr/lib/debug/.build-id/30/82f454498a3b8ee0e860b1869c6403d216cd69
>    Missing separate debuginfo for
>    Try: yum --enablerepo='*-debug*' install
>    /usr/lib/debug/.build-id/08/e42c6c3d2cd1e5d68a43b717c9eb3d310f2df0
>    Reading symbols from /dgagent/lib64/preload.so...(no debugging symbols
>    found)...done.
>    Loaded symbols for /dgagent/lib64/preload.so
>    Reading symbols from /lib64/libutil.so.1...(no debugging symbols
>    found)...done.
>    Loaded symbols for /lib64/libutil.so.1
>    Reading symbols from /lib64/libncurses.so.5...(no debugging symbols
>    found)...done.
>    Loaded symbols for /lib64/libncurses.so.5
>    Reading symbols from
>    /cad/abc/apps/gnu/linux/x86_64/6/lib/libevent-2.0.so.5...done.
>    Loaded symbols for /cad/abc/apps/gnu/linux/x86_64/6/lib/libevent-2.0.so.5
>    Reading symbols from /lib64/librt.so.1...(no debugging symbols
>    found)...done.
>    Loaded symbols for /lib64/librt.so.1
>    Reading symbols from /lib64/libresolv.so.2...(no debugging symbols
>    found)...done.
>    Loaded symbols for /lib64/libresolv.so.2
>    Reading symbols from /lib64/libc.so.6...(no debugging symbols
>    found)...done.
>    Loaded symbols for /lib64/libc.so.6
>    Reading symbols from /lib64/libtinfo.so.5...(no debugging symbols
>    found)...done.
>    Loaded symbols for /lib64/libtinfo.so.5
>    Reading symbols from /lib64/libdl.so.2...(no debugging symbols
>    found)...done.
>    Loaded symbols for /lib64/libdl.so.2
>    Reading symbols from /lib64/libpthread.so.0...(no debugging symbols
>    found)...done.
>    [Thread debugging using libthread_db enabled]
>    Loaded symbols for /lib64/libpthread.so.0
>    Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols
>    found)...done.
>    Loaded symbols for /lib64/ld-linux-x86-64.so.2
>    Core was generated by `tmux -vvvv'.
>    Program terminated with signal 11, Segmentation fault.
>    #0 **0x0000000000405c8d in cfg_default_done ()
>    Missing separate debuginfos, use: debuginfo-install
>    glibc-2.12-1.166.el6_7.7.x86_64 ncurses-libs-5.7-3.20090208.el6.x86_64
>    (gdb) bt full
>    #0 **0x0000000000405c8d in cfg_default_done ()
>    No symbol table info available.
>    #1 **0x000000000040fcf5 in cmdq_continue ()
>    No symbol table info available.
>    #2 **0x0000000000433cda in server_start ()
>    No symbol table info available.
>    #3 **0x0000000000406580 in client_connect ()
>    No symbol table info available.
>    #4 **0x0000000000406917 in client_main ()
>    No symbol table info available.
>    #5 **0x0000000000439c03 in main ()
>    No symbol table info available.
>    (gdb)
>    On Fri, Jan 13, 2017 at 11:08 AM Nicholas Marriott
>    <[3]nicholas.marri...@gmail.com> wrote:
> 
>      Don't attach the core file, attach to it with:
> 
>      gdb tmux core.8841
> 
>      Then do "bt full" and show me the output.
> 
>      On Fri, Jan 13, 2017 at 03:58:17PM +0000, Kaushal Modi wrote:
>      >** ** Thanks for the quick reply.
>      >** ** The tmux that I build myself works fine. But this version of tmux
>      that
>      >** ** fails is built by the company software team. So I do not have
>      control over
>      >** ** their build env.
>      >** ** How can I figure out which libevent version was used to build
>      tmux vs the
>      >** ** one available?
>      >** ** ldd returns this:
>      >** ** >ldd `which tmux`
>      >** ** ** ** ** ** linux-vdso.so.1 => **(0x00007fffd33ff000)
>      >** ** ** ** ** ** libutil.so.1 => /lib64/libutil.so.1
>      (0x00000036fcc00000)
>      >** ** ** ** ** ** libncurses.so.5 => /lib64/libncurses.so.5
>      (0x0000003703400000)
>      >** ** ** ** ** ** libevent-2.0.so.5 =>
>      >** ** /cad/abc/apps/gnu/linux/x86_64/6/lib/libevent-2.0.so.5
>      >** ** (0x00002ae6e9131000)
>      >** ** ** ** ** ** librt.so.1 => /lib64/librt.so.1 (0x00000036ed400000)
>      >** ** ** ** ** ** libresolv.so.2 => /lib64/libresolv.so.2
>      (0x00000036ed800000)
>      >** ** ** ** ** ** libc.so.6 => /lib64/libc.so.6 (0x00000036ec000000)
>      >** ** ** ** ** ** libtinfo.so.5 => /lib64/libtinfo.so.5
>      (0x0000003700c00000)
>      >** ** ** ** ** ** libdl.so.2 => /lib64/libdl.so.2 (0x00000036ec800000)
>      >** ** ** ** ** ** libpthread.so.0 => /lib64/libpthread.so.0
>      (0x00000036ec400000)
>      >** ** ** ** ** ** /lib64/ld-linux-x86-64.so.2 (0x00000036ebc00000)
>      >** ** I have attached the core file this time.
>      >** ** Thanks!
>      >** ** On Fri, Jan 13, 2017 at 10:45 AM Nicholas Marriott
>      >** ** <[1][4]nicholas.marri...@gmail.com> wrote:
>      >
>      >** ** ** Hi
>      >
>      >** ** ** It probably crashed.
>      >
>      >** ** ** Are you sure you are using the same libevent version as the
>      libevent you
>      >** ** ** built against?
>      >
>      >** ** ** Does it generate a core file? (You may need to do "ulimit
>      -cunlimited"
>      >** ** ** first.)
>      >
>      >** ** --
>      >
>      >** ** Kaushal Modi
>      >
>      >** ** --
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>    --
> 
>    Kaushal Modi
> 
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