wtf.cc

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#include <iostream>
#include <stdio.h>
#include <string.h>

using namespace std;

typedef struct YBCStatusStruct {
  int code;
  char msg[0];
  int sql_error_code;
} YBCStatusStruct;

typedef struct YBCStatusStruct* YBCStatus;

int main() {
  std::string status_str = "Hello, world!";
  size_t status_msg_buf_size = status_str.size() + 1;
  YBCStatus ybc_status = reinterpret_cast<YBCStatus>(
      malloc(sizeof(YBCStatusStruct) + status_msg_buf_size));
  ybc_status->code = 123;
  ybc_status->sql_error_code = 456;
  cout << ybc_status->sql_error_code << endl; // prints 456
  strncpy(ybc_status->msg, status_str.c_str(), status_msg_buf_size);
  cout << ybc_status->sql_error_code << endl; // prints 1819043144
  return 0;
}