rsyslog crash on startup (segmentation violation due to NULL-pointer)

rsyslog won't start on fresh install of Ubuntu Wily

Starting program: /usr/sbin/rsyslogd -n
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0x0000000000436400 in ?? ()
(gdb) bt
#0 0x0000000000436400 in ?? ()
#1 0x0000000000419605 in MsgSetRcvFrom ()
#2 0x0000000000445b24 in logmsgInternal ()
#3 0x00000000004223e6 in ?? ()
#4 0x00000000004225b7 in ?? ()
#5 0x0000000000438c68 in processCfSysLineCommand ()
#6 0x0000000000411014 in cfsysline ()
#7 0x000000000041469c in cnfDoCfsysline ()
#8 0x00000000004546f0 in yylex ()
#9 0x0000000000451463 in yyparse ()
#10 0x0000000000412ef7 in ?? ()
#11 0x0000000000413ef4 in load ()
#12 0x00000000004464d7 in initAll ()
#13 0x000000000040d990 in main ()

(gdb) disassemble $rip-0x20,$rip+0x40
Dump of assembler code from 0x4363e0 to 0x436440:
   0x00000000004363e0 <propDebugPrint+0>: mov %rdi,%rsi
   0x00000000004363e3 <propDebugPrint+3>: lea 0x312e6(%rip),%rdi # 0x4676d0
   0x00000000004363ea <propDebugPrint+10>: sub $0x8,%rsp
   0x00000000004363ee <propDebugPrint+14>: xor %eax,%eax
   0x00000000004363f0 <propDebugPrint+16>: callq 0x422ff0 <dbgprintf>
   0x00000000004363f5 <propDebugPrint+21>: xor %eax,%eax
   0x00000000004363f7 <propDebugPrint+23>: add $0x8,%rsp
   0x00000000004363fb <propDebugPrint+27>: retq
   0x00000000004363fc: nopl 0x0(%rax)
=> 0x0000000000436400: lock addl $0x1,0x10(%rdi)
   0x0000000000436405: xor %eax,%eax
   0x0000000000436407: retq
   0x0000000000436408: nopl 0x0(%rax,%rax,1)
   0x0000000000436410: push %r12
   0x0000000000436412: push %rbp

(gdb) info registers
rax 0x0 0
rbx 0x0 0
rcx 0x0 0
rdx 0x6ad05d 7000157
rsi 0x0 0
rdi 0x0 0

# lsb_release -rd
Description: Ubuntu 15.10
Release: 15.10
# dpkg -S /usr/sbin/rsyslogd
rsyslog: /usr/sbin/rsyslogd
# apt-cache policy rsyslog
rsyslog:
  Installed: 8.12.0-1ubuntu2
  Candidate: 8.12.0-1ubuntu2
  Version table:
 *** 8.12.0-1ubuntu2 0
        500 http://archive.ubuntu.com/ubuntu/ wily/main amd64 Packages
        100 /var/lib/dpkg/status