Method ~sp_head

sql/sp_head.cc:258–291

sp_head::~sp_head()
{
  LEX *lex;
  sp_instr *i;

  // Parsing of SP-body must have been already finished.
  DBUG_ASSERT(!m_parser_data.is_parsing_sp_body());

  for (uint ip = 0 ; (i = get_instr(ip)) ; ip++)
    delete i;

  delete m_root_parsing_ctx;

  free_items();

  /*
    If we have non-empty LEX stack then we just came out of parser with
    error. Now we should delete all auxiliary LEXes and restore original
    THD::lex. It is safe to not update LEX::ptr because further query
    string parsing and execution will be stopped anyway.
  */
  while ((lex= (LEX *) m_parser_data.pop_lex()))
  {
    THD *thd= lex->thd;
    thd->lex->sphead= NULL;
    lex_end(thd->lex);
    delete thd->lex;
    thd->lex= lex;
  }

  my_hash_free(&m_sptabs);

  delete m_next_cached_sp;
}

bool sp_head::reset_lex(THD *thd)
{