Crash due to very deep recursion in ha_innobase::wsrep_append_keys

[Philip Stoev]

Running the innodb_prefix_index_restart_server test with wsrep library loaded and wsrep_cluster_address='gcomm://' causes the following:

Thread 1 (Thread 0x7f0014646700 (LWP 31815)):
#0 0x0000003f3040f128 in ?? () from /lib64/libgcc_s.so.1
#1 0x0000003f30410029 in _Unwind_Backtrace () from /lib64/libgcc_s.so.1
#2 0x0000003f2d903086 in backtrace () from /lib64/libc.so.6
#3 0x000000000091c6ec in my_print_stacktrace (stack_bottom=0x7f0014645e20 "\200\250B\003", thread_stack=262144) at /home/philips/git/codership-mysql/mysys/stacktrace.c:224
#4 0x000000000068ce67 in handle_fatal_signal (sig=11) at /home/philips/git/codership-mysql/sql/signal_handler.cc:160
#5 <signal handler called>
#6 0x00000000009df930 in ha_innobase::wsrep_append_keys (this=<optimized out>, thd=<optimized out>, shared=false, record0=0x7efff00110d8 "\376\254\r", <incomplete sequence \327>, record1=0x7efff00110c0 "\376\254\rP\250") at /home/philips/git/codership-mysql/storage/innobase/handler/ha_innodb.cc:9433
#7 0x4242424242424242 in ?? ()
#8 0x4242424242424242 in ?? ()
#9 0x4242424242424242 in ?? ()
...

The stack is 332 frames deep.