CHAPTER 18. ARRAYS CHAPTER 18. ARRAYS
Listing 18.6: Non-optimizing MSVC 2008_TEXT SEGMENT
_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], 30 ; 0000001eH
jge SHORT $LN1@main
mov ecx, DWORD PTR _i$[ebp]
mov edx, DWORD PTR _i$[ebp] ; that instruction is obviously redundant
mov DWORD PTR _a$[ebp+ecx*4], edx ; ECX could be used as second operand here instead
jmp SHORT $LN2@main
$LN1@main:
xor eax, eax
mov esp, ebp
pop ebp
ret 0
_main ENDP
The compiled program crashes after running. No wonder. Let’s see where exactly does it is crash.