bk commit into 4.1 tree (gluh:1.2660) BUG#28553

[gluh]

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ChangeSet@stripped, 2007-05-29 14:02:48+05:00, gluh@stripped +3 -0
  Bug#28553 mysqld crash in "purge master log before(select time from information_schema)"
  forbid use of subselect in PURGE LOGS BEFORE command

  mysql-test/r/subselect.result@stripped, 2007-05-29 14:02:47+05:00, gluh@stripped +2 -0
    test result

  mysql-test/t/subselect.test@stripped, 2007-05-29 14:02:47+05:00, gluh@stripped +4 -3
    test case

  sql/sql_yacc.yy@stripped, 2007-05-29 14:02:48+05:00, gluh@stripped +5 -3
    Bug#28553 mysqld crash in "purge master log before(select time from
information_schema)"
    forbid use of subselect in PURGE LOGS BEFORE command

# This is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	gluh
# Host:	eagle.(none)
# Root:	/home/gluh/MySQL/Bugs/4.1.28553

--- 1.404/sql/sql_yacc.yy	2007-03-29 17:12:31 +05:00
+++ 1.405/sql/sql_yacc.yy	2007-05-29 14:02:48 +05:00
@@ -3567,7 +3567,8 @@ select_derived2:
 	  LEX *lex= Lex;
 	  lex->derived_tables= 1;
           if (lex->sql_command == (int)SQLCOM_HA_READ ||
-              lex->sql_command == (int)SQLCOM_KILL)
+              lex->sql_command == (int)SQLCOM_KILL ||
+              lex->sql_command == (int)SQLCOM_PURGE_BEFORE)
 	  {
 	    yyerror(ER(ER_SYNTAX_ERROR));
 	    YYABORT;
@@ -4748,6 +4749,7 @@ purge:
 	{
 	  LEX *lex=Lex;
 	  lex->type=0;
+          lex->sql_command = SQLCOM_PURGE_BEFORE;
 	} purge_options
 	{}
 	;
@@ -4778,7 +4780,6 @@ purge_option:
             value of constant
 	  */
 	  tmp->quick_fix_field();
-	  Lex->sql_command = SQLCOM_PURGE_BEFORE;
 	  Lex->purge_time= (ulong) tmp->val_int();
 	}
 	;
@@ -6212,7 +6213,8 @@ subselect_start:
 	{
 	  LEX *lex=Lex;
           if (lex->sql_command == (int)SQLCOM_HA_READ ||
-              lex->sql_command == (int)SQLCOM_KILL)
+              lex->sql_command == (int)SQLCOM_KILL ||
+              lex->sql_command ==  SQLCOM_PURGE_BEFORE)
 	  {
             yyerror(ER(ER_SYNTAX_ERROR));
 	    YYABORT;

--- 1.188/mysql-test/r/subselect.result	2007-04-20 15:11:23 +05:00
+++ 1.189/mysql-test/r/subselect.result	2007-05-29 14:02:47 +05:00
@@ -2834,6 +2834,8 @@ a
 4
 DROP TABLE t1,t2,t3;
 purge master logs before (select adddate(current_timestamp(), interval -4 day));
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to
your MySQL server version for the right syntax to use near 'select
adddate(current_timestamp(), interval -4 day))' at line 1
+purge master logs before adddate(current_timestamp(), interval -4 day);
 CREATE TABLE t1 (f1 INT);
 CREATE TABLE t2 (f2 INT);
 INSERT INTO t1 VALUES (1);

--- 1.164/mysql-test/t/subselect.test	2007-01-26 06:44:31 +04:00
+++ 1.165/mysql-test/t/subselect.test	2007-05-29 14:02:47 +05:00
@@ -1815,11 +1815,12 @@ SELECT * FROM t1
 DROP TABLE t1,t2,t3;
 
 #
-# BUG #10308: purge log with subselect
+# BUG#10308: purge log with subselect
+# Bug#28553: mysqld crash in "purge master log before(select time from
information_schema)"
 #
-
+--error 1064
 purge master logs before (select adddate(current_timestamp(), interval -4 day));
-
+purge master logs before adddate(current_timestamp(), interval -4 day);
 
 #
 # Bug#18503: Queries with a quantified subquery returning empty set may