1.20. ARRAYS
Listing 1.228: Non-optimizing MSVC 2008$SG2474 DB 'a[20]=%d', 0aH, 00H
_i$ = -84 ; size = 4
_a$ = -80 ; size = 80
_main PROC
push ebp
mov ebp, esp
sub esp, 84
mov DWORD PTR _i$[ebp], 0
jmp SHORT $LN3@main
$LN2@main:
mov eax, DWORD PTR _i$[ebp]
add eax, 1
mov DWORD PTR _i$[ebp], eax
$LN3@main:
cmp DWORD PTR _i$[ebp], 20
jge SHORT $LN1@main
mov ecx, DWORD PTR _i$[ebp]
shl ecx, 1
mov edx, DWORD PTR _i$[ebp]
mov DWORD PTR _a$[ebp+edx*4], ecx
jmp SHORT $LN2@main
$LN1@main:
mov eax, DWORD PTR _a$[ebp+80]
push eax
push OFFSET $SG2474 ; 'a[20]=%d'
call DWORD PTR impprintf
add esp, 8
xor eax, eax
mov esp, ebp
pop ebp
ret 0
_main ENDP
_TEXT ENDS
END
The code produced this result:
Listing 1.229: OllyDbg: console outputa[20]=1638280
It is justsomethingthat has been lying in the stack near to the array, 80 bytes away from its first element.