Claude 输出与受版权保护的 StackOverflow 代码匹配
我请Claude生成一个C++实现的base64编码器，结果几乎与StackOverflow上的一个版本完全相同。我想这通常不会成为问题，除非发现StackOverflow的示例似乎源自受版权保护的代码。
StackOverflow相关评论链接：[StackOverflow评论](https://stackoverflow.com/questions/180947/base64-decode-snippet-in-c#comment137345692_13935718)
Claude版本：
```cpp
std::string base64encode(const char* data, size_t length)
{
static const char* base64_chars =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"0123456789+/";
std::string result;
result.reserve(((length + 2) / 3) * 4);
size_t i = 0;
unsigned char char_array_3[3];
unsigned char char_array_4[4];
while (length--)
{
char_array_3[i++] = *(data++);
if (i == 3)
{
char_array_4[0] = (char_array_3[0] & 0xfc) >> 2;
char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
char_array_4[3] = char_array_3[2] & 0x3f;
for (i = 0; i < 4; i++)
result += base64_chars[char_array_4[i]];
i = 0;
}
}
if (i)
{
for (size_t j = i; j < 3; j++)
char_array_3[j] = '\0';
char_array_4[0] = (char_array_3[0] & 0xfc) >> 2;
char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
for (size_t j = 0; j < i + 1; j++)
result += base64_chars[char_array_4[j]];
while (i++ < 3)
result += '=';
}
return result;
}
```
查看原文
I asked Claude to generate a C++ implementation of a base64 encoder, and the result was nearly identical to a version on StackOverflow. I guess that wouldn’t normally be an issue, except it turns out the StackOverflow example seems to be derived from copyrighted code.<p>Stackoverflow relevant comment: https://stackoverflow.com/questions/180947/base64-decode-snippet-in-c#comment137345692_13935718<p>Claude version:<p>std::string base64encode(const char* data, size_t length)
{
static const char* base64_chars =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"0123456789+/";<p><pre><code> std::string result;
result.reserve(((length + 2) / 3) * 4);
size_t i = 0;
unsigned char char_array_3[3];
unsigned char char_array_4[4];
while (length--)
{
char_array_3[i++] = *(data++);
if (i == 3)
{
char_array_4[0] = (char_array_3[0] & 0xfc) >> 2;
char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
char_array_4[3] = char_array_3[2] & 0x3f;
for (i = 0; i < 4; i++)
result += base64_chars[char_array_4[i]];
i = 0;
}
}
if (i)
{
for (size_t j = i; j < 3; j++)
char_array_3[j] = '\0';
char_array_4[0] = (char_array_3[0] & 0xfc) >> 2;
char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
for (size_t j = 0; j < i + 1; j++)
result += base64_chars[char_array_4[j]];
while (i++ < 3)
result += '=';
}
return result;
}</code></pre>