=> 0x46f6aa <fc_builtin+1402>:	mov    (%rax),%rcx
   0x46f6ad <fc_builtin+1405>:	xor    %eax,%eax
   0x46f6af <fc_builtin+1407>:	callq  0x41a608 <__fprintf_chk@plt>
   0x46f6b4 <fc_builtin+1412>:	test   %ebp,%ebp
   0x46f6b6 <fc_builtin+1414>:	je     0x46f710 <fc_builtin+1504>
   0x46f6b8 <fc_builtin+1416>:	sub    $0x1,%r14d
   0x46f6bc <fc_builtin+1420>:	test   %ebp,%ebp
   0x46f6be <fc_builtin+1422>:	jne    0x46f610 <fc_builtin+1248>
   0x46f6c4 <fc_builtin+1428>:	cmp    0x1c(%rsp),%r14d
   0x46f6c9 <fc_builtin+1433>:	setle  %r15b
   0x46f6cd <fc_builtin+1437>:	jmpq   0x46f619 <fc_builtin+1257>
   0x46f6d2 <fc_builtin+1442>:	test   %r12d,%r12d
   0x46f6d5 <fc_builtin+1445>:	mov    %r15d,0x1c(%rsp)
   0x46f6da <fc_builtin+1450>:	mov    %r15d,0x18(%rsp)
   0x46f6df <fc_builtin+1455>:	je     0x46f5a0 <fc_builtin+1136>
   0x46f6e5 <fc_builtin+1461>:	mov    %r15d,%edx