(gdb) where
#0  0x0000000801ac0bdb in strlen () from /lib/libc.so.7
WT-1  0x00000000004a6009 in __wt_config_subgets (session=0x80651e080, 
    cfg=0x7ffff1f8fd70, 
    key=0x635f646572616873 <Address 0x635f646572616873 out of bounds>, 
    value=0x7ffff1f8fd50) at src/config/config.c:742
WT-2  0x000000000040dbe6 in wiredtiger_open (
    home=0x80301b300 "/tmp/WT_TEST/D22", event_handler=0x0, 
    config=0x803026920 "create,statistics=(none),shared_cache=(name=wt-cache,size=536870912,reserve=10MB,chunk=20MB,)", wt_connp=0x80302e528)
    at src/conn/conn_api.c:1352
WT-3  0x0000000000409207 in close_reopen (cfg=0x80302e500) at wtperf.c:1352
WT-4  0x000000000040780b in start_run (cfg=0x80302e500) at wtperf.c:1801
WT-5  0x0000000000407e2d in thread_run_wtperf (arg=0x80302e500) at wtperf.c:1735
WT-6  0x00000008011474a4 in pthread_create () from /lib/libthr.so.3
WT-7  0x0000000000000000 in ?? ()
(gdb) frame 2
WT-2  0x000000000040dbe6 in wiredtiger_open (
    home=0x80301b300 "/tmp/WT_TEST/D22", event_handler=0x0, 
    config=0x803026920 "create,statistics=(none),shared_cache=(name=wt-cache,size=536870912,reserve=10MB,chunk=20MB,)", wt_connp=0x80302e528)
    at src/conn/conn_api.c:1352
1352			ret = __wt_config_subgets(session, &cval, ft->name, &sval);
Current language:  auto; currently minimal
(gdb) p *ft
$1 = {name = 0x0, flag = 0}
(gdb) down
WT-1  0x00000000004a6009 in __wt_config_subgets (session=0x80651e080, 
    cfg=0x7ffff1f8fd70, 
    key=0x635f646572616873 <Address 0x635f646572616873 out of bounds>, 
    value=0x7ffff1f8fd50) at src/config/config.c:742
742		    { key, strlen(key), 0, WT_CONFIG_ITEM_STRING };
(gdb) p key
$2 = 0x635f646572616873 <Address 0x635f646572616873 out of bounds>
(gdb) printf "%s\n", &key
shared_cp????