static l_noret jumpscopeerror (LexState *ls, Labeldesc *gt) {
  const char *varname = getstr(getlocalvardesc(ls->fs, gt->nactvar)->vd.name);
  const char *msg = "<goto %s> at line %d jumps into the scope of local '%s'";
  msg = luaO_pushfstring(ls->L, msg, getstr(gt->name), gt->line, varname);
  luaK_semerror(ls, msg);  /* raise the error */
}