What The ?

[baltoro]

main(_){_^448&&main(-~_);putchar(--_%64?32|-~7[__TIME__-_/8%8][">'txiZ^(~z?"-48]>>";;;====~$::199"[_*2&8|_/64]/(_&2?1:8)%8&1:10);}

[baltoro]

I'm SO embarrassed, that's C. Wrong Forum. Wrong everything.
HUTCH, at your convenience, could you please delete this irrelevant thread?
...I have obfuscated myself.

[Rockoon]

obfuscated C code contest?

[baltoro]

...exactly, and, I was under the mistaken impression that I was looking at assembly code.   
Either way, it didn't make any sense,...

[MichaelW]

Code Select Expand


; Listing generated by Microsoft (R) Optimizing Compiler Version 13.10.3077

  TITLE  obfus.c
  .386P
include listing.inc
if @Version gt 510
.model FLAT
else
_TEXT  SEGMENT PARA USE32 PUBLIC 'CODE'
_TEXT  ENDS
_DATA  SEGMENT DWORD USE32 PUBLIC 'DATA'
_DATA  ENDS
CONST  SEGMENT DWORD USE32 PUBLIC 'CONST'
CONST  ENDS
_BSS  SEGMENT DWORD USE32 PUBLIC 'BSS'
_BSS  ENDS
$$SYMBOLS  SEGMENT BYTE USE32 'DEBSYM'
$$SYMBOLS  ENDS
_TLS  SEGMENT DWORD USE32 PUBLIC 'TLS'
_TLS  ENDS
FLAT  GROUP _DATA, CONST, _BSS
  ASSUME  CS: FLAT, DS: FLAT, SS: FLAT
endif

INCLUDELIB LIBC
INCLUDELIB OLDNAMES

_DATA  SEGMENT
$SG473  DB  '>''txiZ^(~z?', 00H
$SG474  DB  '20:44:44', 00H
  ORG $+3
$SG475  DB  ';;;====~$::199', 00H
_DATA  ENDS
PUBLIC  _main
EXTRN  _putchar:NEAR
; Function compile flags: /Odt
_TEXT  SEGMENT
tv131 = -4            ; size = 4
__$ = 8              ; size = 4
_main  PROC NEAR
; File c:\program files\microsoft visual c++ toolkit 2003\my\junk\obfus.c
; Line 1
  push  ebp
  mov  ebp, esp
  push  ecx
  push  esi
  mov  eax, DWORD PTR __$[ebp]
  xor  eax, 448        ; 000001c0H
  je  SHORT $L482
  mov  ecx, DWORD PTR __$[ebp]
  not  ecx
  neg  ecx
  push  ecx
  call  _main
  add  esp, 4
$L482:
  mov  edx, DWORD PTR __$[ebp]
  sub  edx, 1
  mov  DWORD PTR __$[ebp], edx
  mov  eax, DWORD PTR __$[ebp]
  and  eax, -2147483585      ; 8000003fH
  jns  SHORT $L485
  dec  eax
  or  eax, -64        ; ffffffc0H
  inc  eax
$L485:
  test  eax, eax
  je  SHORT $L483
  mov  ecx, OFFSET FLAT:$SG473
  sub  ecx, 48          ; 00000030H
  mov  eax, DWORD PTR __$[ebp]
  cdq
  and  edx, 7
  add  eax, edx
  sar  eax, 3
  and  eax, -2147483641      ; 80000007H
  jns  SHORT $L486
  dec  eax
  or  eax, -8          ; fffffff8H
  inc  eax
$L486:
  mov  edx, OFFSET FLAT:$SG474
  sub  edx, eax
  movsx  eax, BYTE PTR [edx+7]
  movsx  esi, BYTE PTR [ecx+eax]
  not  esi
  neg  esi
  mov  ecx, DWORD PTR __$[ebp]
  shl  ecx, 1
  and  ecx, 8
  mov  eax, DWORD PTR __$[ebp]
  cdq
  and  edx, 63          ; 0000003fH
  add  eax, edx
  sar  eax, 6
  or  ecx, eax
  movsx  eax, BYTE PTR $SG475[ecx]
  mov  ecx, DWORD PTR __$[ebp]
  and  ecx, 2
  neg  ecx
  sbb  ecx, ecx
  and  ecx, -7          ; fffffff9H
  add  ecx, 8
  cdq
  idiv  ecx
  and  eax, -2147483641      ; 80000007H
  jns  SHORT $L487
  dec  eax
  or  eax, -8          ; fffffff8H
  inc  eax
$L487:
  mov  ecx, eax
  sar  esi, cl
  and  esi, 1
  or  esi, 32          ; 00000020H
  mov  DWORD PTR tv131[ebp], esi
  jmp  SHORT $L484
$L483:
  mov  DWORD PTR tv131[ebp], 10    ; 0000000aH
$L484:
  mov  edx, DWORD PTR tv131[ebp]
  push  edx
  call  _putchar
  add  esp, 4
  xor  eax, eax
  pop  esi
  mov  esp, ebp
  pop  ebp
  ret  0
_main  ENDP
_TEXT  ENDS
END


[baltoro]

MichaelW,
...excellent, I should have thought of that.
So, what the hell is it? It's a "one liner digital clock program". This is how the author describes it. It was an entry in the 2006 19th IOCCC contest. Explanation is here: http://www.stephensykes.com/IOCCC/2006/sykes2/remarks
Actual code is here: http://www.stephensykes.com/IOCCC/2006/sykes2/sykes2.c
The International Obfuscated C Code Contest is here: http://www.ioccc.org/

[MichaelW]

I can't follow most of the C code, and I was surprised that the compiler would compile it with only two warnings, and I had to specify /W4 to get both of them:

obfus.c(1) : warning C4131: 'main' : uses old-style declarator
obfus.c(1) : warning C4013: 'putchar' undefined; assuming extern returning int

IMO it does not qualify as a "digital clock program" because instead of displaying real time, it displays the compile time, encoded here:

$SG474 DB '20:44:44', 00H