svk hangs ( from an smerge -C operation ):

0xb7eb90d4 in strchr () from /lib/tls/libc.so.6
(gdb) bt
#0  0xb7eb90d4 in strchr () from /lib/tls/libc.so.6
#1  0x08106e42 in Perl_mode_from_discipline ()
#2  0x080f3d35 in Perl_pp_binmode ()
#3  0x080bbd69 in Perl_runops_standard ()
#4  0x080640c9 in Perl_call_sv ()
#5  0x08063fe5 in Perl_call_sv ()
#6  0xb7ceb7ec in svn_swig_pl_callback_thunk () from /usr/lib/libsvn_swig_perl-1.so.0
#7  0xb7cec753 in svn_swig_pl_callback_thunk () from /usr/lib/libsvn_swig_perl-1.so.0
#8  0xb7d44f93 in svn_repos_dir_delta () from /usr/lib/libsvn_repos-1.so.0
#9  0xb7d454e6 in svn_repos_dir_delta () from /usr/lib/libsvn_repos-1.so.0
#10 0xb7d44ff3 in svn_repos_dir_delta () from /usr/lib/libsvn_repos-1.so.0
#11 0xb7d454e6 in svn_repos_dir_delta () from /usr/lib/libsvn_repos-1.so.0
#12 0xb7d44ff3 in svn_repos_dir_delta () from /usr/lib/libsvn_repos-1.so.0
#13 0xb7d454e6 in svn_repos_dir_delta () from /usr/lib/libsvn_repos-1.so.0
#14 0xb7d4413a in svn_repos_dir_delta () from /usr/lib/libsvn_repos-1.so.0
#15 0xb76d4b7b in _wrap_svn_repos_dir_delta () from /usr/lib/perl5/auto/SVN/_Repos/_Repos.so
#16 0x080c3276 in Perl_pp_entersub ()
#17 0x080bbd69 in Perl_runops_standard ()
#18 0x080635e8 in perl_run ()
#19 0x080633f5 in perl_run ()
#20 0x0805fb9f in main ()
(gdb) finish
Run till exit from #0  0xb7eb90d4 in strchr () from /lib/tls/libc.so.6
[Switching to Thread -1209974016 (LWP 3903)]
0x08106e42 in Perl_mode_from_discipline ()
(gdb)
Run till exit from #0  0x08106e42 in Perl_mode_from_discipline ()