=> 0x7f176cb2ac9c <g_type_check_instance_is_a+60>:	testb  $0x4,0x16(%r8)
   0x7f176cb2aca1 <g_type_check_instance_is_a+65>:	je     0x7f176cb2ad10 <g_type_check_instance_is_a+176>
   0x7f176cb2aca3 <g_type_check_instance_is_a+67>:	test   %rsi,%rsi
   0x7f176cb2aca6 <g_type_check_instance_is_a+70>:	je     0x7f176cb2ad10 <g_type_check_instance_is_a+176>
   0x7f176cb2aca8 <g_type_check_instance_is_a+72>:	movzbl 0x14(%rsi),%eax
   0x7f176cb2acac <g_type_check_instance_is_a+76>:	movzbl 0x14(%r8),%edx
   0x7f176cb2acb1 <g_type_check_instance_is_a+81>:	cmp    %dl,%al
   0x7f176cb2acb3 <g_type_check_instance_is_a+83>:	ja     0x7f176cb2acc5 <g_type_check_instance_is_a+101>
   0x7f176cb2acb5 <g_type_check_instance_is_a+85>:	sub    %eax,%edx
   0x7f176cb2acb7 <g_type_check_instance_is_a+87>:	mov    0x48(%rsi),%rdi
   0x7f176cb2acbb <g_type_check_instance_is_a+91>:	movslq %edx,%rdx
   0x7f176cb2acbe <g_type_check_instance_is_a+94>:	cmp    %rdi,0x48(%r8,%rdx,8)
   0x7f176cb2acc3 <g_type_check_instance_is_a+99>:	je     0x7f176cb2ad02 <g_type_check_instance_is_a+162>
   0x7f176cb2acc5 <g_type_check_instance_is_a+101>:	cltq   
   0x7f176cb2acc7 <g_type_check_instance_is_a+103>:	cmpq   $0x8,0x48(%rsi,%rax,8)
   0x7f176cb2accd <g_type_check_instance_is_a+109>:	je     0x7f176cb2ad18 <g_type_check_instance_is_a+184>