C++數組拷貝，地址問題

Question

我在迭代數組時遇到了一些內存問題。這裏是我的代碼：

... 
std::vector<uint32_t> iD(32); 
packBytes(intialPad.data(), intialPad.size(), iD); 
const char32_t* modifiedInitPad = iD.data(); 
uint32_t H[8] = { 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 }; 
... 

for (uint32_t i = 0; i < 2; i++) 
{ 

     uint32_t block[16]; 
     std::copy(modifiedInitPad + (i * 16), modifiedInitPad + (i * 16) + 16, block); 


     uint32_t w[64]; 

     uint32_t temp[10]; 

     transformBlock(block, w, temp, H); 

} 

... 

void transformBlock(uint32_t* block, uint32_t* W, uint32_t* temp, uint32_t* H) { 
    const uint32_t K[] = { 
    0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 
    0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, 
    0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 
    0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 
    0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 
    0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, 
    0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 
    0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967, 
    0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 
    0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 
    0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 
    0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, 
    0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 
    0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, 
    0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 
    0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2 
}; 

const uint32_t size = 16; 

for (int i = 0; i < size; i++) 
{ 
    W[i] = block[i]; 
} 
for (int t = 16; t < 64; ++t) 
    W[t] = crypto::f6(W[t - 2]) + W[t - 7] + crypto::f5(W[t - 15]) + W[t - 16]; 

for (int i = 0; i < 8; i++) 
{ 
    temp[i] = H[i]; 
} 


for (int t = 0; t < 64; ++t) { 
    temp[8] = temp[7] + crypto::f4(temp[4]) + crypto::f1(temp[4], temp[5], temp[6]) + K[t] + W[t]; 
    temp[9] = crypto::f3(temp[0]) + crypto::f2(temp[0], temp[1], temp[2]); 
    temp[7] = temp[6]; 
    temp[6] = temp[5]; 
    temp[5] = temp[4]; 
    temp[4] = temp[3] + temp[8]; 
    temp[3] = temp[2]; 
    temp[2] = temp[1]; 
    temp[1] = temp[0]; 
    temp[0] = temp[8] + temp[9]; 
} 
for (int i = 0; i < size; i++) 
{ 
    H[i] = crypto::add(H[i], temp[i]); 
} 
} 
... 
namespace crypto { 
namespace { 
    uint32_t word(int a, int b, int c, int d) { 
     a &= 0xff; 
     b &= 0xff; 
     c &= 0xff; 
     d &= 0xff; 
     int val = a << 24 | b << 16 | c << 8 | d; 
     return val; 
    } 

    uint32_t ROTR(uint32_t number, unsigned bits) { 
     return (number >> bits) | (number << (32 - bits)); 
    } 

    uint32_t f1(uint32_t x, uint32_t y, uint32_t z) { 
     return (x & y)^(~x & z); 
    } 
    uint32_t f2(uint32_t x, uint32_t y, uint32_t z) { 
     return (x & y)^(x&z)^(y&z); 
    } 
    uint32_t f3(uint32_t x) { 
     return ROTR(x, 2)^ROTR(x, 13)^ROTR(x, 22); 
    } 
    uint32_t f4(uint32_t x) { 
     return ROTR(x, 6)^ROTR(x, 11)^ROTR(x, 25); 
    } 
    uint32_t f5(uint32_t x) { 
     return ROTR(x, 7)^ROTR(x, 18)^(x >> 3); 
    } 
    uint32_t f6(uint32_t x) { 
     return ROTR(x, 17)^ROTR(x, 19)^(x >> 10); 
    } 

    uint32_t add(uint32_t a, uint32_t b) { 
     return a + b; 
    } 
} 
} 

當我= 0時，一切順利。但是，當我= 1時，modifiedInitPad沒有與以前相同的地址。所以我在「std：copy（..）」得到一個異常。

有什麼想法？

在環路下面你可能緩衝區溢出

Answer 1

for (int i = 0; i < size; i++) 
{ 
    H[i] = crypto::add(H[i], temp[i]); 

大小爲16和以H應該是使用H 8元件陣列[I]這裏導致對於I = 8,9

溢出