=> 0x7f1a6a87420b <raise+43>:	cmp    $0xfffffffffffff000,%rax
   0x7f1a6a874211 <raise+49>:	ja     0x7f1a6a874215 <raise+53>
   0x7f1a6a874213 <raise+51>:	repz retq 
   0x7f1a6a874215 <raise+53>:	mov    0x208d6c(%rip),%rdx        # 0x7f1a6aa7cf88
   0x7f1a6a87421c <raise+60>:	neg    %eax
   0x7f1a6a87421e <raise+62>:	mov    %eax,%fs:(%rdx)
   0x7f1a6a874221 <raise+65>:	or     $0xffffffffffffffff,%rax
   0x7f1a6a874225 <raise+69>:	retq   
   0x7f1a6a874226:	nopw   %cs:0x0(%rax,%rax,1)
   0x7f1a6a874230 <system>:	jmpq   0x7f1a6a869620 <__libc_system@plt>
   0x7f1a6a874235:	nopw   %cs:0x0(%rax,%rax,1)
   0x7f1a6a87423f:	nop
   0x7f1a6a874240 <__flockfile>:	mov    0x88(%rdi),%rdx
   0x7f1a6a874247 <__flockfile+7>:	mov    %rdi,%r9
   0x7f1a6a87424a <__flockfile+10>:	mov    %fs:0x10,%r8
   0x7f1a6a874253 <__flockfile+19>:	cmp    0x8(%rdx),%r8