=> 0xb712152f <g_type_check_instance_cast+15>:	call   0xb70f5c67
   0xb7121534 <g_type_check_instance_cast+20>:	add    $0x1cac0,%ebx
   0xb712153a <g_type_check_instance_cast+26>:	mov    %edi,0x44(%esp)
   0xb712153e <g_type_check_instance_cast+30>:	test   %esi,%esi
   0xb7121540 <g_type_check_instance_cast+32>:	mov    %ebp,0x48(%esp)
   0xb7121544 <g_type_check_instance_cast+36>:	je     0xb71215e8 <g_type_check_instance_cast+200>
   0xb712154a <g_type_check_instance_cast+42>:	mov    0x50(%esp),%edx
   0xb712154e <g_type_check_instance_cast+46>:	mov    (%edx),%eax
   0xb7121550 <g_type_check_instance_cast+48>:	test   %eax,%eax
   0xb7121552 <g_type_check_instance_cast+50>:	je     0xb7121738 <g_type_check_instance_cast+536>
   0xb7121558 <g_type_check_instance_cast+56>:	mov    (%eax),%ebp
   0xb712155a <g_type_check_instance_cast+58>:	mov    %ebp,%esi
   0xb712155c <g_type_check_instance_cast+60>:	and    $0xfffffffc,%esi
   0xb712155f <g_type_check_instance_cast+63>:	cmp    $0x3fc,%ebp
   0xb7121565 <g_type_check_instance_cast+69>:	jbe    0xb71216f8 <g_type_check_instance_cast+472>
   0xb712156b <g_type_check_instance_cast+75>:	xor    %eax,%eax