[BUG] Fix crash when enable heavy log and socket id less then 10.

[xiaozhihong]

No description provided.

[maxsharabayko]

I am afraid std::setw does not truncate a value.

The field width determines the minimum number of characters to be written in some output representations. If the standard width of the representation is shorter than the field width, the representation is padded with fill characters at a point determined by the format flag adjustfield (one of left, right or internal).

// setw example
#include <iostream>     // std::cout, std::endl
#include <iomanip>      // std::setw

int main () {
  std::cout << std::setfill('0') << std::setw(2) << 277 << std::endl;
  std::cout << std::setfill('0') << std::setw(2) << 2 << std::endl;
  return 0;
}

Output:

277
02

[ethouris]

The idea here is not to truncate value, but to ensure that the resulting string has at least 2 characters. That's why setw was required to ensure this, and then these last 2 ciphers from the resulting string should still be taken.

[maxsharabayko]

The idea here is not to truncate value, but to ensure that the resulting string has at least 2 characters. That's why setw was required to ensure this, and then these last 2 ciphers from the resulting string should still be taken.

Then s.substr(s.size()-2, 2); must remain.

[ethouris]

Exactly, that's what I meant.