% lldb ./gets2              

(lldb) target create "./gets2"
Current executable set to '/Users/user/cs59/gets2' (arm64).

(lldb) dis -n main
gets2`main:
gets2[0x100003ed4] <+0>:   sub    sp, sp, #0x30             ; =0x30 
gets2[0x100003ed8] <+4>:   stp    x29, x30, [sp, #0x20]
gets2[0x100003edc] <+8>:   add    x29, sp, #0x20            ; =0x20 
gets2[0x100003ee0] <+12>:  adrp   x8, 1
gets2[0x100003ee4] <+16>:  ldr    x8, [x8]
gets2[0x100003ee8] <+20>:  ldr    x8, [x8]
gets2[0x100003eec] <+24>:  stur   x8, [x29, #-0x8]
gets2[0x100003ef0] <+28>:  str    wzr, [sp, #0x4]
gets2[0x100003ef4] <+32>:  add    x0, sp, #0x8              ; =0x8 
gets2[0x100003ef8] <+36>:  mov    w8, #0xa
gets2[0x100003efc] <+40>:  str    w8, [sp, #0x14]
gets2[0x100003f00] <+44>:  bl     0x100003f64               ; symbol stub for: gets
gets2[0x100003f04] <+48>:  ldr    w8, [sp, #0x14]
gets2[0x100003f08] <+52>:  str    w8, [sp]
gets2[0x100003f0c] <+56>:  ldr    w8, [sp]
gets2[0x100003f10] <+60>:  tbnz   w8, #0x1f, 0x100003f2c    ; <+88>
gets2[0x100003f14] <+64>:  ldr    w8, [sp]
gets2[0x100003f18] <+68>:  subs   w8, w8, #0x1              ; =0x1 
gets2[0x100003f1c] <+72>:  str    w8, [sp]
gets2[0x100003f20] <+76>:  add    x0, sp, #0x8              ; =0x8 
gets2[0x100003f24] <+80>:  bl     0x100003f70               ; symbol stub for: puts
gets2[0x100003f28] <+84>:  b      0x100003f0c               ; <+56>
gets2[0x100003f2c] <+88>:  adrp   x8, 1
gets2[0x100003f30] <+92>:  ldr    x8, [x8]
gets2[0x100003f34] <+96>:  ldr    x8, [x8]
gets2[0x100003f38] <+100>: ldur   x9, [x29, #-0x8]
gets2[0x100003f3c] <+104>: subs   x8, x8, x9
gets2[0x100003f40] <+108>: b.ne   0x100003f54               ; <+128>
gets2[0x100003f44] <+112>: mov    w0, #0x2a
gets2[0x100003f48] <+116>: ldp    x29, x30, [sp, #0x20]
gets2[0x100003f4c] <+120>: add    sp, sp, #0x30             ; =0x30 
gets2[0x100003f50] <+124>: ret    
gets2[0x100003f54] <+128>: bl     0x100003f58               ; symbol stub for: __stack_chk_fail

(lldb) b 0x100003f04
Breakpoint 1: address = 0x0000000100003f04

(lldb) br l
Current breakpoints:
1: address = 0x0000000100003f04, locations = 1
  1.1: address = 0x0000000100003f04, unresolved, hit count = 0 

(lldb) b main
Breakpoint 2: where = gets2`main, address = 0x0000000100003ed4

(lldb) br l
Current breakpoints:
1: address = 0x0000000100003f04, locations = 1
  1.1: address = 0x0000000100003f04, unresolved, hit count = 0 

2: name = 'main', locations = 1
  2.1: where = gets2`main, address = gets2[0x0000000100003ed4], unresolved, hit count = 0 

(lldb) br del 1
1 breakpoints deleted; 0 breakpoint locations disabled.

(lldb) b 0x100003f04
Breakpoint 3: address = 0x0000000100003f04

(lldb) br l
Current breakpoints:
2: name = 'main', locations = 1
  2.1: where = gets2`main, address = gets2[0x0000000100003ed4], unresolved, hit count = 0 

3: address = 0x0000000100003f04, locations = 1
  3.1: address = 0x0000000100003f04, unresolved, hit count = 0 

(lldb) br del 3
1 breakpoints deleted; 0 breakpoint locations disabled.

(lldb) r
Process 88708 launched: '/Users/user/cs59/gets2' (arm64)
Process 88708 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 2.1
    frame #0: 0x0000000100003ed4 gets2`main
gets2`main:
->  0x100003ed4 <+0>:  sub    sp, sp, #0x30             ; =0x30 
    0x100003ed8 <+4>:  stp    x29, x30, [sp, #0x20]
    0x100003edc <+8>:  add    x29, sp, #0x20            ; =0x20 
    0x100003ee0 <+12>: adrp   x8, 1
Target 0: (gets2) stopped.

(lldb) b 0x100003f04
Breakpoint 4: where = gets2`main + 48, address = 0x0000000100003f04

(lldb) br l
Current breakpoints:
2: name = 'main', locations = 1, resolved = 1, hit count = 1
  2.1: where = gets2`main, address = 0x0000000100003ed4, resolved, hit count = 1 

4: address = gets2[0x0000000100003f04], locations = 1, resolved = 1, hit count = 0
  4.1: where = gets2`main + 48, address = 0x0000000100003f04, resolved, hit count = 0 

(lldb) c
Process 88708 resuming
warning: this program uses gets(), which is unsafe.
AAAAAAAAAAAAAA
Process 88708 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 4.1
    frame #0: 0x0000000100003f04 gets2`main + 48
gets2`main:
->  0x100003f04 <+48>: ldr    w8, [sp, #0x14]
    0x100003f08 <+52>: str    w8, [sp]
    0x100003f0c <+56>: ldr    w8, [sp]
    0x100003f10 <+60>: tbnz   w8, #0x1f, 0x100003f2c    ; <+88>
Target 0: (gets2) stopped.

(lldb) x $sp
0x16fdff720: 00 00 00 00 00 00 00 00 41 41 41 41 41 41 41 41  ........AAAAAAAA
0x16fdff730: 41 41 41 41 41 41 00 00 0c 00 ca c5 2f 86 7e 2e  AAAAAA....../.~.

(lldb) r
There is a running process, kill it and restart?: [Y/n] y
Process 88708 exited with status = 9 (0x00000009) 
Process 88714 launched: '/Users/user/cs59/gets2' (arm64)
Process 88714 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 2.1
    frame #0: 0x0000000100003ed4 gets2`main
gets2`main:
->  0x100003ed4 <+0>:  sub    sp, sp, #0x30             ; =0x30 
    0x100003ed8 <+4>:  stp    x29, x30, [sp, #0x20]
    0x100003edc <+8>:  add    x29, sp, #0x20            ; =0x20 
    0x100003ee0 <+12>: adrp   x8, 1
Target 0: (gets2) stopped.

(lldb) disas -n main
gets2`main:
->  0x100003ed4 <+0>:   sub    sp, sp, #0x30             ; =0x30 
    0x100003ed8 <+4>:   stp    x29, x30, [sp, #0x20]
    0x100003edc <+8>:   add    x29, sp, #0x20            ; =0x20 
    0x100003ee0 <+12>:  adrp   x8, 1
    0x100003ee4 <+16>:  ldr    x8, [x8]
    0x100003ee8 <+20>:  ldr    x8, [x8]
    0x100003eec <+24>:  stur   x8, [x29, #-0x8]
    0x100003ef0 <+28>:  str    wzr, [sp, #0x4]
    0x100003ef4 <+32>:  add    x0, sp, #0x8              ; =0x8 
    0x100003ef8 <+36>:  mov    w8, #0xa
    0x100003efc <+40>:  str    w8, [sp, #0x14]
    0x100003f00 <+44>:  bl     0x100003f64               ; symbol stub for: gets
    0x100003f04 <+48>:  ldr    w8, [sp, #0x14]
    0x100003f08 <+52>:  str    w8, [sp]
    0x100003f0c <+56>:  ldr    w8, [sp]
    0x100003f10 <+60>:  tbnz   w8, #0x1f, 0x100003f2c    ; <+88>
    0x100003f14 <+64>:  ldr    w8, [sp]
    0x100003f18 <+68>:  subs   w8, w8, #0x1              ; =0x1 
    0x100003f1c <+72>:  str    w8, [sp]
    0x100003f20 <+76>:  add    x0, sp, #0x8              ; =0x8 
    0x100003f24 <+80>:  bl     0x100003f70               ; symbol stub for: puts
    0x100003f28 <+84>:  b      0x100003f0c               ; <+56>
    0x100003f2c <+88>:  adrp   x8, 1
    0x100003f30 <+92>:  ldr    x8, [x8]
    0x100003f34 <+96>:  ldr    x8, [x8]
    0x100003f38 <+100>: ldur   x9, [x29, #-0x8]
    0x100003f3c <+104>: subs   x8, x8, x9
    0x100003f40 <+108>: b.ne   0x100003f54               ; <+128>
    0x100003f44 <+112>: mov    w0, #0x2a
    0x100003f48 <+116>: ldp    x29, x30, [sp, #0x20]
    0x100003f4c <+120>: add    sp, sp, #0x30             ; =0x30 
    0x100003f50 <+124>: ret    
    0x100003f54 <+128>: bl     0x100003f58               ; symbol stub for: __stack_chk_fail

(lldb) b 0x100003efc
Breakpoint 5: where = gets2`main + 40, address = 0x0000000100003efc

(lldb) br l
Current breakpoints:
2: name = 'main', locations = 1, resolved = 1, hit count = 2
  2.1: where = gets2`main, address = 0x0000000100003ed4, resolved, hit count = 2 

4: address = gets2[0x0000000100003f04], locations = 1, resolved = 1, hit count = 1
  4.1: where = gets2`main + 48, address = 0x0000000100003f04, resolved, hit count = 1 

5: address = gets2[0x0000000100003efc], locations = 1, resolved = 1, hit count = 0
  5.1: where = gets2`main + 40, address = 0x0000000100003efc, resolved, hit count = 0 

(lldb) c
Process 88714 resuming
Process 88714 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 5.1
    frame #0: 0x0000000100003efc gets2`main + 40
gets2`main:
->  0x100003efc <+40>: str    w8, [sp, #0x14]
    0x100003f00 <+44>: bl     0x100003f64               ; symbol stub for: gets
    0x100003f04 <+48>: ldr    w8, [sp, #0x14]
    0x100003f08 <+52>: str    w8, [sp]
Target 0: (gets2) stopped.

(lldb) si
Process 88714 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = instruction step into
    frame #0: 0x0000000100003f00 gets2`main + 44
gets2`main:
->  0x100003f00 <+44>: bl     0x100003f64               ; symbol stub for: gets
    0x100003f04 <+48>: ldr    w8, [sp, #0x14]
    0x100003f08 <+52>: str    w8, [sp]
    0x100003f0c <+56>: ldr    w8, [sp]
Target 0: (gets2) stopped.

(lldb) x $sp
0x16fdff720: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
0x16fdff730: 00 00 00 00 0a 00 00 00 20 00 09 f7 40 e4 f4 de  ........ ...@...

(lldb) c
Process 88714 resuming
warning: this program uses gets(), which is unsafe.
AAAAAAAAAAAAAAA
Process 88714 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 4.1
    frame #0: 0x0000000100003f04 gets2`main + 48
gets2`main:
->  0x100003f04 <+48>: ldr    w8, [sp, #0x14]
    0x100003f08 <+52>: str    w8, [sp]
    0x100003f0c <+56>: ldr    w8, [sp]
    0x100003f10 <+60>: tbnz   w8, #0x1f, 0x100003f2c    ; <+88>
Target 0: (gets2) stopped.

(lldb) x $sp
0x16fdff720: 00 00 00 00 00 00 00 00 41 41 41 41 41 41 41 41  ........AAAAAAAA
0x16fdff730: 41 41 41 41 41 41 41 00 20 00 09 f7 40 e4 f4 de  AAAAAAA. ...@...

(lldb) x/w $sp
0x16fdff720: 0x00000000

(lldb) x/10w $sp
0x16fdff720: 0x00000000 0x00000000 0x41414141 0x41414141
0x16fdff730: 0x41414141 0x00414141 0xf7090020 0xdef4e440
0x16fdff740: 0x6fdff760 0x00000001

(lldb) r
There is a running process, kill it and restart?: [Y/n] y
Process 88714 exited with status = 9 (0x00000009) 
Process 88751 launched: '/Users/user/cs59/gets2' (arm64)
Process 88751 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 2.1
    frame #0: 0x0000000100003ed4 gets2`main
gets2`main:
->  0x100003ed4 <+0>:  sub    sp, sp, #0x30             ; =0x30 
    0x100003ed8 <+4>:  stp    x29, x30, [sp, #0x20]
    0x100003edc <+8>:  add    x29, sp, #0x20            ; =0x20 
    0x100003ee0 <+12>: adrp   x8, 1
Target 0: (gets2) stopped.

(lldb) c
Process 88751 resuming
Process 88751 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 5.1
    frame #0: 0x0000000100003efc gets2`main + 40
gets2`main:
->  0x100003efc <+40>: str    w8, [sp, #0x14]
    0x100003f00 <+44>: bl     0x100003f64               ; symbol stub for: gets
    0x100003f04 <+48>: ldr    w8, [sp, #0x14]
    0x100003f08 <+52>: str    w8, [sp]
Target 0: (gets2) stopped.

(lldb) x/10w $sp
0x16fdff720: 0x00000000 0x00000000 0x00000000 0x00000000
0x16fdff730: 0x00000000 0x00000000 0x88e70072 0x7242c3cf
0x16fdff740: 0x6fdff760 0x00000001

(lldb) si
Process 88751 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = instruction step into
    frame #0: 0x0000000100003f00 gets2`main + 44
gets2`main:
->  0x100003f00 <+44>: bl     0x100003f64               ; symbol stub for: gets
    0x100003f04 <+48>: ldr    w8, [sp, #0x14]
    0x100003f08 <+52>: str    w8, [sp]
    0x100003f0c <+56>: ldr    w8, [sp]
Target 0: (gets2) stopped.

(lldb) x/10w $sp
0x16fdff720: 0x00000000 0x00000000 0x00000000 0x00000000
0x16fdff730: 0x00000000 0x0000000a 0x88e70072 0x7242c3cf
0x16fdff740: 0x6fdff760 0x00000001

(lldb) c
Process 88751 resuming
warning: this program uses gets(), which is unsafe.
AAAAAAAAAAA
Process 88751 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 4.1
    frame #0: 0x0000000100003f04 gets2`main + 48
gets2`main:
->  0x100003f04 <+48>: ldr    w8, [sp, #0x14]
    0x100003f08 <+52>: str    w8, [sp]
    0x100003f0c <+56>: ldr    w8, [sp]
    0x100003f10 <+60>: tbnz   w8, #0x1f, 0x100003f2c    ; <+88>
Target 0: (gets2) stopped.

(lldb) x/10w $sp
0x16fdff720: 0x00000000 0x00000000 0x41414141 0x41414141
0x16fdff730: 0x00414141 0x0000000a 0x88e70072 0x7242c3cf
0x16fdff740: 0x6fdff760 0x00000001

(lldb) r
There is a running process, kill it and restart?: [Y/n] y
Process 88751 exited with status = 9 (0x00000009) 
Process 88760 launched: '/Users/user/cs59/gets2' (arm64)
Process 88760 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 2.1
    frame #0: 0x0000000100003ed4 gets2`main
gets2`main:
->  0x100003ed4 <+0>:  sub    sp, sp, #0x30             ; =0x30 
    0x100003ed8 <+4>:  stp    x29, x30, [sp, #0x20]
    0x100003edc <+8>:  add    x29, sp, #0x20            ; =0x20 
    0x100003ee0 <+12>: adrp   x8, 1
Target 0: (gets2) stopped.

(lldb) c
Process 88760 resuming
Process 88760 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 5.1
    frame #0: 0x0000000100003efc gets2`main + 40
gets2`main:
->  0x100003efc <+40>: str    w8, [sp, #0x14]
    0x100003f00 <+44>: bl     0x100003f64               ; symbol stub for: gets
    0x100003f04 <+48>: ldr    w8, [sp, #0x14]
    0x100003f08 <+52>: str    w8, [sp]
Target 0: (gets2) stopped.

(lldb) c
Process 88760 resuming
warning: this program uses gets(), which is unsafe.
AAAAAAAAAAAAA
Process 88760 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 4.1
    frame #0: 0x0000000100003f04 gets2`main + 48
gets2`main:
->  0x100003f04 <+48>: ldr    w8, [sp, #0x14]
    0x100003f08 <+52>: str    w8, [sp]
    0x100003f0c <+56>: ldr    w8, [sp]
    0x100003f10 <+60>: tbnz   w8, #0x1f, 0x100003f2c    ; <+88>
Target 0: (gets2) stopped.

(lldb) x/10w $sp
0x16fdff720: 0x00000000 0x00000000 0x41414141 0x41414141
0x16fdff730: 0x41414141 0x00000041 0x4ea900db 0xaddb0a7c
0x16fdff740: 0x6fdff760 0x00000001

(lldb) c
Process 88760 resuming
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
AAAAAAAAAAAAA
Process 88760 exited with status = 42 (0x0000002a) 

(lldb) ^D
% fg
[1]  + continued  emacs gets.c

zsh: suspended  emacs gets.c

% lldb ./gets2              
(lldb) target create "./gets2"
Current executable set to '/Users/user/cs59/gets2' (arm64).
(lldb) b main
Breakpoint 1: where = gets2`main, address = 0x0000000100003ed4
(lldb) dis -n main
gets2`main:
gets2[0x100003ed4] <+0>:   sub    sp, sp, #0x30             ; =0x30 
gets2[0x100003ed8] <+4>:   stp    x29, x30, [sp, #0x20]
gets2[0x100003edc] <+8>:   add    x29, sp, #0x20            ; =0x20 
gets2[0x100003ee0] <+12>:  adrp   x8, 1
gets2[0x100003ee4] <+16>:  ldr    x8, [x8]
gets2[0x100003ee8] <+20>:  ldr    x8, [x8]
gets2[0x100003eec] <+24>:  stur   x8, [x29, #-0x8]
gets2[0x100003ef0] <+28>:  str    wzr, [sp, #0x4]
gets2[0x100003ef4] <+32>:  add    x0, sp, #0x8              ; =0x8 
gets2[0x100003ef8] <+36>:  mov    w8, #0xa
gets2[0x100003efc] <+40>:  str    w8, [sp, #0x14]
gets2[0x100003f00] <+44>:  bl     0x100003f64               ; symbol stub for: gets
gets2[0x100003f04] <+48>:  ldr    w8, [sp, #0x14]
gets2[0x100003f08] <+52>:  str    w8, [sp]
gets2[0x100003f0c] <+56>:  ldr    w8, [sp]
gets2[0x100003f10] <+60>:  tbnz   w8, #0x1f, 0x100003f2c    ; <+88>
gets2[0x100003f14] <+64>:  ldr    w8, [sp]
gets2[0x100003f18] <+68>:  subs   w8, w8, #0x1              ; =0x1 
gets2[0x100003f1c] <+72>:  str    w8, [sp]
gets2[0x100003f20] <+76>:  add    x0, sp, #0x8              ; =0x8 
gets2[0x100003f24] <+80>:  bl     0x100003f70               ; symbol stub for: puts
gets2[0x100003f28] <+84>:  b      0x100003f0c               ; <+56>
gets2[0x100003f2c] <+88>:  adrp   x8, 1
gets2[0x100003f30] <+92>:  ldr    x8, [x8]
gets2[0x100003f34] <+96>:  ldr    x8, [x8]
gets2[0x100003f38] <+100>: ldur   x9, [x29, #-0x8]
gets2[0x100003f3c] <+104>: subs   x8, x8, x9
gets2[0x100003f40] <+108>: b.ne   0x100003f54               ; <+128>
gets2[0x100003f44] <+112>: mov    w0, #0x2a
gets2[0x100003f48] <+116>: ldp    x29, x30, [sp, #0x20]
gets2[0x100003f4c] <+120>: add    sp, sp, #0x30             ; =0x30 
gets2[0x100003f50] <+124>: ret    
gets2[0x100003f54] <+128>: bl     0x100003f58               ; symbol stub for: __stack_chk_fail