disas /m caller1

9	{
   0x00000000004004fd <+0>:	push   %rbp
   0x00000000004004fe <+1>:	mov    %rsp,%rbp
   0x0000000000400501 <+4>:	sub    $0x10,%rsp

10	  int i = 1;
   0x0000000000400505 <+8>:	movl   $0x1,-0x4(%rbp)

11	  int b = 2;
   0x000000000040050c <+15>:	movl   $0x2,-0x8(%rbp)

12	  caller2();
   0x0000000000400513 <+22>:	callq  0x4004f0 <caller2>

13	}
   0x0000000000400518 <+27>:	leaveq 
   0x0000000000400519 <+28>:	retq