(gdb) run ~/Work/mongodb-linux-x86_64-2.0.0/bin/n.php
Starting program: /home/bjori/Work/src/php/php/php-src/branches/PHP_5_3/sapi/cli/php ~/Work/mongodb-linux-x86_64-2.0.0/bin/n.php
couldn't get socket to send on
couldn't determine master
couldn't determine master
couldn't determine master
couldn't determine master
couldn't determine master
couldn't determine master
couldn't determine master
couldn't determine master
couldn't determine master
couldn't determine master
couldn't determine master
couldn't determine master
couldn't determine master
Program received signal SIGSEGV, Segmentation fault.
0x00000000005aa5ba in xbuf_format_converter (xbuf=0x7fffffffd490, fmt=0x778b3e "s:%d.%s.%s.%s.%d", ap=0x7fffffffd4e0) at /home/bjori/Work/php/5.3/main/spprintf.c:576
576 s_len = strlen(s);
(gdb) bt
#0 0x00000000005aa5ba in xbuf_format_converter (xbuf=0x7fffffffd490, fmt=0x778b3e "s:%d.%s.%s.%s.%d", ap=0x7fffffffd4e0) at /home/bjori/Work/php/5.3/main/spprintf.c:576
#1 0x00000000005ab4fb in vspprintf (pbuf=0x7fffffffd658, max_len=0, format=0x778b3d "%s:%d.%s.%s.%s.%d", ap=0x7fffffffd4e0) at /home/bjori/Work/php/5.3/main/spprintf.c:799
#2 0x00000000005ab5e6 in spprintf (pbuf=0x7fffffffd658, max_len=0, format=0x778b3d "%s:%d.%s.%s.%s.%d") at /home/bjori/Work/php/5.3/main/spprintf.c:818
#3 0x00000000004b4f98 in mongo_util_pool__get_id (server=0xb65a10, id=0x7fffffffd658) at /home/bjori/Work/php/5.3/ext/mongo/util/pool.c:527
#4 0x00000000004b4d1f in mongo_util_pool__get_monitor (server=0xb65a10) at /home/bjori/Work/php/5.3/ext/mongo/util/pool.c:485
#5 0x00000000004b4220 in mongo_util_pool_done (server=0xb65a10) at /home/bjori/Work/php/5.3/ext/mongo/util/pool.c:113
#6 0x0000000000498320 in php_mongo_server_free (server=0xb65a10, persist=0) at /home/bjori/Work/src/mongo-php-driver/mongo.c:107
#7 0x000000000049847e in php_mongo_server_set_free (server_set=0xb64248) at /home/bjori/Work/src/mongo-php-driver/mongo.c:144
#8 php_mongo_link_free (object=0xb63fd0) at /home/bjori/Work/src/mongo-php-driver/mongo.c:172
#9 0x000000000064b8a7 in zend_objects_store_free_object_storage (objects=0xa32c38) at /home/bjori/Work/php/5.3/Zend/zend_objects_API.c:92
#10 0x000000000060bef1 in shutdown_executor () at /home/bjori/Work/php/5.3/Zend/zend_execute_API.c:304
#11 0x000000000061cfac in zend_deactivate () at /home/bjori/Work/php/5.3/Zend/zend.c:891
#12 0x00000000005a4cb7 in php_request_shutdown (dummy=0x0) at /home/bjori/Work/php/5.3/main/main.c:1661
#13 0x0000000000704bba in main (argc=2, argv=0x7fffffffde98) at /home/bjori/Work/php/5.3/sapi/cli/php_cli.c:1363
(gdb) frame 3
#3 0x00000000004b4f98 in mongo_util_pool__get_id (server=0xb65a10, id=0x7fffffffd658) at /home/bjori/Work/php/5.3/ext/mongo/util/pool.c:527
527 len = spprintf(id, 0, "%s:%d.%s.%s.%s.%d", server->host, server->port,
(gdb) p server->host
$1 = 0x5a5a5a5a5a5a5a5a <Address 0x5a5a5a5a5a5a5a5a out of bounds>