==5011== 2,100 bytes in 1 blocks are still reachable in loss record 2 of 3
==5011==    at 0x4C2B6CD: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==5011==    by 0xCCB98E: sf_malloc (safemalloc.c:105)
==5011==    by 0xCB667F: my_malloc (my_malloc.c:41)
==5011==    by 0xCB68A2: my_realloc (my_malloc.c:92)
==5011==    by 0x618C4B: my_yyoverflow(short**, YYSTYPE**, unsigned long*) (sql_parse.cc:5417)
==5011==    by 0x7636EC: MYSQLparse(void*) (sql_yacc.cc:18150)
==5011==    by 0x61D8A4: parse_sql(THD*, Parser_state*, Object_creation_ctx*) (sql_parse.cc:7644)
==5011==    by 0x61985C: mysql_parse(THD*, char*, unsigned int, Parser_state*) (sql_parse.cc:5724)
==5011==    by 0x60D020: dispatch_command(enum_server_command, THD*, char*, unsigned int) (sql_parse.cc:1071)
==5011==    by 0x60C230: do_command(THD*) (sql_parse.cc:794)
==5011==    by 0x713028: do_handle_one_connection(THD*) (sql_connect.cc:1266)
==5011==    by 0x712A0F: handle_one_connection (sql_connect.cc:1181)
==5011==    by 0x9614C7: pfs_spawn_thread (pfs.cc:1015)
==5011==    by 0x545AE99: start_thread (pthread_create.c:308)
==5011==    by 0x619CCBC: clone (clone.S:112)

revision-id: sanja@montyprogram.com-20130718081618-6ax63urznfnqmzgt
revno: 3839
branch-nick: 5.5

5400:bool my_yyoverflow(short **yyss, YYSTYPE **yyvs, ulong *yystacksize)
5401:{
5402:  Yacc_state *state= & current_thd->m_parser_state->m_yacc;
5403:  ulong old_info=0;
5404:  DBUG_ASSERT(state);
5405:  if ((uint) *yystacksize >= MY_YACC_MAX)
5406:    return 1;
5407:  if (!state->yacc_yyvs)
5408:    old_info= *yystacksize;
5409:  *yystacksize= set_zone((*yystacksize)*2,MY_YACC_INIT,MY_YACC_MAX);
5410:  if (!(state->yacc_yyvs= (uchar*)
5411:        my_realloc(state->yacc_yyvs,
5412:                   *yystacksize*sizeof(**yyvs),
5413:                   MYF(MY_ALLOW_ZERO_PTR | MY_FREE_ON_ERROR))) ||
5414:      !(state->yacc_yyss= (uchar*)
5415:        my_realloc(state->yacc_yyss,
5416:                   *yystacksize*sizeof(**yyss),
5417:                   MYF(MY_ALLOW_ZERO_PTR | MY_FREE_ON_ERROR))))
5418:    return 1;
5419:  if (old_info)
5420:  {
5421:    /*
5422:      Only copy the old stack on the first call to my_yyoverflow(),
5423:      when replacing a static stack (YYINITDEPTH) by a dynamic stack.
5424:      For subsequent calls, my_realloc already did preserve the old stack.
5425:    */
5426:    memcpy(state->yacc_yyss, *yyss, old_info*sizeof(**yyss));
5427:    memcpy(state->yacc_yyvs, *yyvs, old_info*sizeof(**yyvs));
5428:  }
5429:  *yyss= (short*) state->yacc_yyss;
5430:  *yyvs= (YYSTYPE*) state->yacc_yyvs;
5431:  return 0;
5432:}