(gdb) bt
#0  0x100f4eae in mysql_thread_init () from C:\Ruby192\bin\libmysql.dll
#1  0x1000bede in mysql_thread_init () from C:\Ruby192\bin\libmysql.dll
#2  0x101a14c0 in mysql_thread_init () from C:\Ruby192\bin\libmysql.dll
#3  0x1000f092 in mysql_thread_init () from C:\Ruby192\bin\libmysql.dll
#4  0x0235d600 in ?? ()
#5  0x63b4162a in rb_connect (self=40113672, user=4, pass=4, host=4, port=4, database=4, socket=4, flags=1) at ../../../../ext/mysql2/client.c:170
#6  0x62e3e5f1 in rb_vm_mark () from C:\Ruby192\bin\msvcrt-ruby191.dll
#7  0x62e4d8d7 in rb_remove_method_id () from C:\Ruby192\bin\msvcrt-ruby191.dll
#8  0x62e42dd3 in rb_vm_localjump_error () from C:\Ruby192\bin\msvcrt-ruby191.dll
#9  0x62e47529 in rb_vm_localjump_error () from C:\Ruby192\bin\msvcrt-ruby191.dll
#10 0x62e48441 in rb_vm_invoke_proc () from C:\Ruby192\bin\msvcrt-ruby191.dll
#11 0x62d3e646 in rb_obj_call_init () from C:\Ruby192\bin\msvcrt-ruby191.dll
#12 0x62d8601a in rb_class_new_instance () from C:\Ruby192\bin\msvcrt-ruby191.dll
#13 0x62e3e6e9 in rb_vm_mark () from C:\Ruby192\bin\msvcrt-ruby191.dll
#14 0x62e4d8d7 in rb_remove_method_id () from C:\Ruby192\bin\msvcrt-ruby191.dll
#15 0x62e42dd3 in rb_vm_localjump_error () from C:\Ruby192\bin\msvcrt-ruby191.dll
#16 0x62e47529 in rb_vm_localjump_error () from C:\Ruby192\bin\msvcrt-ruby191.dll
#17 0x62e47874 in rb_vm_localjump_error () from C:\Ruby192\bin\msvcrt-ruby191.dll
#18 0x62e47d66 in rb_f_eval () from C:\Ruby192\bin\msvcrt-ruby191.dll
#19 0x62e3e6e9 in rb_vm_mark () from C:\Ruby192\bin\msvcrt-ruby191.dll
#20 0x62e4d8d7 in rb_remove_method_id () from C:\Ruby192\bin\msvcrt-ruby191.dll
#21 0x62e42dd3 in rb_vm_localjump_error () from C:\Ruby192\bin\msvcrt-ruby191.dll
#22 0x62e47529 in rb_vm_localjump_error () from C:\Ruby192\bin\msvcrt-ruby191.dll
#23 0x62e4e1de in rb_obj_instance_exec () from C:\Ruby192\bin\msvcrt-ruby191.dll
#24 0x62d3e279 in rb_rescue2 () from C:\Ruby192\bin\msvcrt-ruby191.dll
#25 0x62e3ee78 in rb_vm_mark () from C:\Ruby192\bin\msvcrt-ruby191.dll
#26 0x62e4d8d7 in rb_remove_method_id () from C:\Ruby192\bin\msvcrt-ruby191.dll
#27 0x62e42dd3 in rb_vm_localjump_error () from C:\Ruby192\bin\msvcrt-ruby191.dll
#28 0x62e47529 in rb_vm_localjump_error () from C:\Ruby192\bin\msvcrt-ruby191.dll
#29 0x62e4e249 in rb_obj_instance_exec () from C:\Ruby192\bin\msvcrt-ruby191.dll
#30 0x62e416bf in rb_catch_obj () from C:\Ruby192\bin\msvcrt-ruby191.dll
#31 0x62e4174a in rb_catch_obj () from C:\Ruby192\bin\msvcrt-ruby191.dll
#32 0x62e3e6e9 in rb_vm_mark () from C:\Ruby192\bin\msvcrt-ruby191.dll
#33 0x62e4d8d7 in rb_remove_method_id () from C:\Ruby192\bin\msvcrt-ruby191.dll
#34 0x62e42dd3 in rb_vm_localjump_error () from C:\Ruby192\bin\msvcrt-ruby191.dll
#35 0x62e47529 in rb_vm_localjump_error () from C:\Ruby192\bin\msvcrt-ruby191.dll
#36 0x62e4e249 in rb_obj_instance_exec () from C:\Ruby192\bin\msvcrt-ruby191.dll
#37 0x62e416bf in rb_catch_obj () from C:\Ruby192\bin\msvcrt-ruby191.dll
#38 0x62e4174a in rb_catch_obj () from C:\Ruby192\bin\msvcrt-ruby191.dll
#39 0x62e3e6e9 in rb_vm_mark () from C:\Ruby192\bin\msvcrt-ruby191.dll
#40 0x62e4d8d7 in rb_remove_method_id () from C:\Ruby192\bin\msvcrt-ruby191.dll
#41 0x62e42dd3 in rb_vm_localjump_error () from C:\Ruby192\bin\msvcrt-ruby191.dll
#42 0x62e47529 in rb_vm_localjump_error () from C:\Ruby192\bin\msvcrt-ruby191.dll
#43 0x62e4eaa8 in rb_iseq_eval_main () from C:\Ruby192\bin\msvcrt-ruby191.dll
#44 0x62d3be79 in rb_check_frozen () from C:\Ruby192\bin\msvcrt-ruby191.dll
#45 0x62d3dea0 in ruby_run_node () from C:\Ruby192\bin\msvcrt-ruby191.dll
#46 0x004013a3 in main (argc=2, argv=0x5c2ea0) at ../ruby_1_9/main.c:35
(gdb)