[Pdns-users] [recursor] Segmentation fault at startup

[Stephane Bortzmeyer]

%  pdns_recursor                                                     
May 26 09:12:12 PowerDNS recursor 3.2 (C) 2001-2010 PowerDNS.COM BV (May 26 2010, 08:46:38, gcc 4.1.3 20080704 prerelease (NetBSD nb2 20081120)) starting up
May 26 09:12:12 PowerDNS comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to redistribute it according to the terms of the GPL version 2.
May 26 09:12:12 Operating in 32 bits mode
May 26 09:12:12 Reading random entropy from '/dev/urandom'
zsh: segmentation fault  pdns_recursor

Same thing without a /etc/powerdns/recursor.conf. Same thing is run as
root.

% g++ --version
g++ (GCC) 4.1.3 20080704 prerelease (NetBSD nb2 20081120)
Copyright (C) 2006 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

% uname -a
NetBSD golgoth 5.0.1 NetBSD 5.0.1 (GENERIC) #0: Thu Oct  1 15:46:16 CEST 2009  stephane at golgoth:/usr/obj/sys/arch/i386/compile/GENERIC i386

Boost is 1.38.0nb1

With the debugger (I have zero experience in debugging C++ programs):

(gdb) run
Starting program: /usr/sbin/pdns_recursor 
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
May 26 09:13:01 PowerDNS recursor 3.2 (C) 2001-2010 PowerDNS.COM BV (May 26 2010, 08:46:38, gcc 4.1.3 20080704 prerelease (NetBSD nb2 20081120)) starting up
May 26 09:13:01 PowerDNS comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to redistribute it according to the terms of the GPL version 2.
May 26 09:13:01 Operating in 32 bits mode
May 26 09:13:01 Reading random entropy from '/dev/urandom'

Program received signal SIGSEGV, Segmentation fault.
0x08095a97 in std::string::_S_construct<char const*> ()
(gdb) bt
#0  0x08095a97 in std::string::_S_construct<char const*> ()
#1  0x0809e390 in std::string::_S_construct<char const*> ()
#2  0x080a5215 in std::string::_S_construct<char const*> ()
#3  0x0804ccd4 in ?? ()
#4  0x00000001 in ?? ()
#5  0xbfbfea78 in ?? ()
#6  0xbfbfea80 in ?? ()
#7  0x0804cc46 in ?? ()
#8  0xbfbfeb88 in ?? ()
#9  0xbfbfea80 in ?? ()
#10 0xbbbf2000 in ?? ()
#11 0xbfbffff0 in ?? ()
#12 0x00000000 in ?? ()

Very little difference when compiling with -O0 -g:

(gdb) run
Starting program: /usr/sbin/pdns_recursor 
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
May 26 09:29:04 PowerDNS recursor 3.2 (C) 2001-2010 PowerDNS.COM BV (May 26 2010, 09:23:52, gcc 4.1.3 20080704 prerelease (NetBSD nb2 20081120)) starting up
May 26 09:29:04 PowerDNS comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to redistribute it according to the terms of the GPL version 2.
May 26 09:29:04 Operating in 32 bits mode
May 26 09:29:04 Reading random entropy from '/dev/urandom'

Program received signal SIGSEGV, Segmentation fault.
0x080a1fac in std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string<char*> ()
(gdb) bt
#0  0x080a1fac in std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string<char*> ()
#1  0x080a84b0 in std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string<char*> ()
#2  0x080b2e04 in std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string<char*> ()
#3  0x0804e044 in ?? ()
#4  0x00000001 in ?? ()
#5  0xbfbfea30 in ?? ()
#6  0xbfbfea38 in ?? ()
#7  0x0804dfb6 in ?? ()
#8  0xbfbfeb40 in ?? ()
#9  0xbfbfea38 in ?? ()
#10 0xbbbf2000 in ?? ()
#11 0xbfbffff0 in ?? ()
#12 0x00000000 in ?? ()