#mysql50# legacy alias / internal table collisions

> **Note:** a working (but heavily vibecoded mess of a) remote code execution chain for this issue is available. > I recommend not posting anything publicly accessible about this in JIRA until resolved.

uint tablename_to_filename(const char *from, char *to, size_t to_length)
{
  if ((length= check_n_cut_mysql50_prefix(from, to, to_length)))
  { 
    if (Lex_ident_table::check_name({to, length}, true))
    {
      to[0]= 0;
      length= 0;
    }
    DBUG_RETURN(length);
  }

  length= …