crash at startup if wsrep_cluster_address is not set

[Seppo Jaakola]

howto reproduce:

start a node with, without wsrep_cluster_address, .e.g. simply by:
./mysql-galera start

...leads to a segfault in wsrep_start_replication

(gdb) bt
#0 __pthread_kill (threadid=<value optimized out>,
    signo=<value optimized out>)
    at ../nptl/sysdeps/unix/sysv/linux/pthread_kill.c:63
#1 0x00000000008f0746 in my_write_core (sig=11)
    at /home/seppo/work/wsrep/wsrep-5.5/mysys/stacktrace.c:423
#2 0x0000000000538d75 in handle_segfault (sig=11)
    at /home/seppo/work/wsrep/wsrep-5.5/sql/mysqld.cc:2650
#3 <signal handler called>
#4 0x00000000006f6cbb in wsrep_start_replication ()
    at /home/seppo/work/wsrep/wsrep-5.5/sql/wsrep_mysqld.cc:457
#5 0x00000000006f6a19 in wsrep_init_startup (first=true)
    at /home/seppo/work/wsrep/wsrep-5.5/sql/wsrep_mysqld.cc:397
#6 0x000000000053b2d3 in init_server_components ()
    at /home/seppo/work/wsrep/wsrep-5.5/sql/mysqld.cc:4013
#7 0x000000000053dbd7 in mysqld_main (argc=44, argv=0x15089c8)
    at /home/seppo/work/wsrep/wsrep-5.5/sql/mysqld.cc:5056
#8 0x0000000000534774 in main (argc=13, argv=0x7ffff939b4a8)
    at /home/seppo/work/wsrep/wsrep-5.5/sql/main.cc:25

[Seppo Jaakola (seppo-jaakola)]

FIx for setting wsrep_cluster_address dynamically was pushed in change set: http://bazaar.launchpad.net/~codership/codership-mysql/wsrep-5.5/revision/3588

However, this fix works only if SST method is mysqldump