zlib 在缓冲区扩展时停止

当我尝试解压缩大小大于 2048 的数据时，zlib 解压缩调用返回Z_OK。因此，为了澄清如果我解压缩大小为 2980 的数据，它将解压缩到 2048(两个循环(，然后返回Z_OK。我错过了什么？

字节是向量<无符号字符>;

   Bytes uncompressIt( const Bytes& data )
   {
       size_t buffer_length = 1024;
       Byte* buffer = nullptr;
       int status = 0;
       do
       {
           buffer = ( Byte* ) calloc( buffer_length + 1, sizeof( Byte ) );
           int status = uncompress( buffer, &buffer_length, &data[ 0 ], data.size( ) );  
           if ( status == Z_OK )
           {
              break;
           }
           else if ( status == Z_MEM_ERROR )
           {
              throw runtime_error( "GZip decompress ran out of memory." );
           }
           else if ( status == Z_DATA_ERROR )
           {
              throw runtime_error( "GZip decompress input data was corrupted or incomplete." );
           }
           else //if ( status == Z_BUF_ERROR )
           {
              free( buffer );
              buffer_length *= 2;
           }
       } while ( status == Z_BUF_ERROR ); //then the output buffer wasn't large enough
       Bytes result;
       for( size_t index = 0; index != buffer_length; index++ )
       {
          result.push_back( buffer[ index ] );
       }
       return result;
    }

编辑：

感谢@Michael抓住了 realloc。我一直在搞砸实现并错过了它;在发布之前仍然没有任何借口。