C++函数不会返回

Question

我有一个函数,我正在调用它一直运行到它应该返回但不返回的位置.如果我在函数的最后部分调试某些东西进行调试,它会显示但函数不会返回.

fetchData是我指的函数.它由outputFile调用.cout显示"在这里完成"而不是"数据获取"

我知道这段代码很乱,但任何人都可以帮我解决这个问题吗？

谢谢

  //Given an inode return all data of i_block data
  char* fetchData(iNode tempInode){
   char* data;
   data = new char[tempInode.i_size];
   this->currentInodeSize = tempInode.i_size;

   //Loop through blocks to retrieve data
   vector<unsigned int> i_blocks;
   i_blocks.reserve(tempInode.i_blocks);

   this->currentDataPosition = 0;
   cout << "currentDataPosition set to 0" << std::endl;
   cout << "i_blocks:" << tempInode.i_blocks << std::endl;
   int i = 0;
   for(i = 0; i < 12; i++){
    if(tempInode.i_block[i] == 0)
     break;
    i_blocks.push_back(tempInode.i_block[i]);
   }

   appendIndirectData(tempInode.i_block[12], &i_blocks);
   appendDoubleIndirectData(tempInode.i_block[13], &i_blocks);
   appendTripleIndirectData(tempInode.i_block[14], &i_blocks);

   //Loop through all the block addresses to get the actual data
   for(i=0; i < i_blocks.size(); i++){
    appendData(i_blocks[i], data);
   }
   cout << "done here" << std::endl;

   return data;
  }




  void appendData(int block, char* data){
   char* tempBuffer;
   tempBuffer = new char[this->blockSize];

   ifstream file (this->filename, std::ios::binary);
   int entryLocation = block*this->blockSize;
   file.seekg (entryLocation, ios::beg);
   file.read(tempBuffer, this->blockSize);

   //Append this block to data
   for(int i=0; i < this->blockSize; i++){
    data[this->currentDataPosition] = tempBuffer[i];
    this->currentDataPosition++;
   }
   data[this->currentDataPosition] = '\0';
  }

  void outputFile(iNode file, string filename){
   char* data;
   cout << "File Transfer Started" << std::endl;
   data = this->fetchData(file);
   cout << "data fetched" << std::endl;

   char *outputFile = (char*)filename.c_str();
   ofstream myfile;
   myfile.open (outputFile,ios::out|ios::binary);
   int i = 0;
   for(i=0; i < file.i_size; i++){
    myfile << data[i];
   }
   myfile.close();
   cout << "File Transfer Completed" << std::endl;
   return;
  }

Answer 1

要么您的程序中存在其他一些代码行打印“此处完成”，要么您正在破坏堆栈并影响返回地址。但我在堆栈上没有看到任何可能会溢出的缓冲区。

您尝试过使用调试器吗？