[exim-dev] [Bug 2648] Use of $authres in a router headers_ad…

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Author: admin
Date:  
To: exim-dev
Subject: [exim-dev] [Bug 2648] Use of $authres in a router headers_add causes segmentation violation for local messages
https://bugs.exim.org/show_bug.cgi?id=2648

--- Comment #9 from Jim Fenton <fenton@???> ---
After much learning about how to enable coredumps and get symbols I have it.
Here's the backtrace; if you need the core file itself I can send it to you.

root@altmode:~# coredumpctl dump 2627 -o exim4.core.2627
           PID: 2627 (exim4)
           UID: 0 (root)
           GID: 109 (Debian-exim)
        Signal: 11 (SEGV)
     Timestamp: Sat 2020-10-31 15:47:08 PDT (7min ago)
  Command Line: /usr/sbin/exim4 -qG
    Executable: /usr/sbin/exim4
 Control Group: /system.slice/exim4.service
          Unit: exim4.service
         Slice: system.slice
       Boot ID: d15983a39f194ce390859bdfe9d4e344
    Machine ID: 458e5ad9c19ace0873fd2d7df75e74c4
      Hostname: altmode.net
       Storage:
/var/lib/systemd/coredump/core.exim4.0.d15983a39f194ce390859bdfe9d4e344.2627.1604184428000000.lz4
       Message: Process 2627 (exim4) of user 0 dumped core.


                Stack trace of thread 2627:
                #0  0x00007f27ebc6e206 __GI___strlen_sse2 (libc.so.6)
                #1  0x000055e9908d6313 string_cat (exim4)
                #2  0x000055e9908cfc1c authres_smtpauth (exim4)
                #3  0x000055e99088b2f2 expand_string_internal (exim4)
                #4  0x000055e990887b12 expand_cstring (exim4)
                #5  0x000055e9908f7388 rf_get_munge_headers (exim4)
                #6  0x000055e9908f2edd accept_router_entry (exim4)
                #7  0x000055e9908bf5a3 route_address (exim4)
                #8  0x000055e99087c8a6 deliver_message (exim4)
                #9  0x000055e9908a9900 queue_run (exim4)
                #10 0x000055e9908663f8 main (exim4)
                #11 0x00007f27ebbfa09b __libc_start_main (libc.so.6)
                #12 0x000055e99086818a _start (exim4)


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