  pcf_seek_to_table_type( FT_Stream  stream,
                          PCF_Table  tables,
                          FT_ULong   ntables, /* same as PCF_Toc->count */
                          FT_ULong   type,
                          FT_ULong  *aformat,
                          FT_ULong  *asize )
  {
    FT_Error  error = FT_ERR( Invalid_File_Format );
    FT_ULong  i;


    for ( i = 0; i < ntables; i++ )
      if ( tables[i].type == type )
      {
        if ( stream->pos > tables[i].offset )
        {
          error = FT_THROW( Invalid_Stream_Skip );
          goto Fail;
        }

        if ( FT_STREAM_SKIP( tables[i].offset - stream->pos ) )
        {
          error = FT_THROW( Invalid_Stream_Skip );
          goto Fail;
        }

        *asize   = tables[i].size;
        *aformat = tables[i].format;

        return FT_Err_Ok;
      }

  Fail:
    *asize = 0;
    return error;
  }

This weakness involves numeric computation errors, such as integer overflows, underflows, or precision losses, which can lead to miscalculations and exploitable behaviors in software.