Merge weblab.(none):/home/marcsql/TREE/mysql-5.1-base

into  weblab.(none):/home/marcsql/TREE/mysql-5.1-rt50-merge

BUILD/SETUP.sh

@@ -105,7 +105,7 @@ if [ "x$warning_mode" != "xpedantic" ]; then
 # Added unless --with-debug=full
   debug_extra_cflags="-O1 -Wuninitialized"
 else
-  warnings="-W -Wall -ansi -pedantic -Wno-long-long -D_POSIX_SOURCE"
+  warnings="-W -Wall -ansi -pedantic -Wno-long-long -Wno-unused -D_POSIX_SOURCE"
   c_warnings="$warnings"
   cxx_warnings="$warnings -std=c++98"
 # NOTE: warning mode should not influence optimize/debug mode.
@@ -207,3 +207,28 @@ then
   echo "$CC" | grep "ccache" > /dev/null || CC="ccache $CC"
   echo "$CXX" | grep "ccache" > /dev/null || CXX="ccache $CXX"
 fi
+
+# gcov
+
+# The  -fprofile-arcs and -ftest-coverage options cause GCC to instrument the
+# code with profiling information used by gcov.
+# The -DDISABLE_TAO_ASM is needed to avoid build failures in Yassl.
+# The -DHAVE_gcov enables code to write out coverage info even when crashing.
+
+gcov_compile_flags="-fprofile-arcs -ftest-coverage"
+gcov_compile_flags="$gcov_compile_flags -DDISABLE_TAO_ASM"
+gcov_compile_flags="$gcov_compile_flags -DMYSQL_SERVER_SUFFIX=-gcov -DHAVE_gcov"
+
+# GCC4 needs -fprofile-arcs -ftest-coverage on the linker command line (as well
+# as on the compiler command line), and this requires setting LDFLAGS for BDB.
+
+gcov_link_flags="-fprofile-arcs -ftest-coverage"
+
+gcov_configs="--disable-shared"
+
+# gprof
+
+gprof_compile_flags="-O2 -pg -g"
+
+gprof_link_flags="--disable-shared $static_link"
+

BUILD/compile-amd64-gcov

+#! /bin/sh
+
+path=`dirname $0`
+. "$path/SETUP.sh"
+
+# Need to disable ccache, or we loose the gcov-needed compiler output files.
+CCACHE_DISABLE=1
+export CCACHE_DISABLE
+
+export LDFLAGS="$gcov_link_flags"
+
+extra_flags="$amd64_cflags $debug_cflags $max_cflags $gcov_compile_flags"
+c_warnings="$c_warnings $debug_extra_warnings"
+cxx_warnings="$cxx_warnings $debug_extra_warnings"
+extra_configs="$amd64_configs $debug_configs $gcov_configs $max_configs"
+
+. "$path/FINISH.sh"

BUILD/compile-amd64-gprof

+#! /bin/sh
+
+path=`dirname $0`
+. "$path/SETUP.sh"
+
+extra_flags="$amd64_cflags $gprof_compile_flags"
+extra_configs="$amd64_configs $debug_configs $gprof_link_flags"
+
+. "$path/FINISH.sh"

BUILD/compile-pentium-gcov

@@ -20,18 +20,11 @@ export CCACHE_GCOV_VERSION_ENABLED
 path=`dirname $0`
 . "$path/SETUP.sh"
 
-# GCC4 needs -fprofile-arcs -ftest-coverage on the linker command line (as well
-# as on the compiler command line), and this requires setting LDFLAGS for BDB.
-export LDFLAGS="-fprofile-arcs -ftest-coverage"
+export LDFLAGS="$gcov_link_flags"
 
-# The  -fprofile-arcs and -ftest-coverage options cause GCC to instrument the
-# code with profiling information used by gcov.
-# The -DDISABLE_TAO_ASM is needed to avoid build failures in Yassl.
-# The -DHAVE_gcov enables code to write out coverage info even when crashing.
-extra_flags="$pentium_cflags -fprofile-arcs -ftest-coverage -DDISABLE_TAO_ASM -DHAVE_MUTEX_THREAD_ONLY $debug_extra_flags $debug_cflags $max_cflags -DMYSQL_SERVER_SUFFIX=-gcov -DHAVE_gcov"
-extra_configs="$pentium_configs $debug_configs --disable-shared $static_link"
-extra_configs="$extra_configs $max_configs"
+extra_flags="$pentium_cflags $debug_cflags $max_cflags $gcov_compile_flags"
 c_warnings="$c_warnings $debug_extra_warnings"
 cxx_warnings="$cxx_warnings $debug_extra_warnings"
+extra_configs="$pentium_configs $debug_configs $gcov_configs $max_configs"
 
 . "$path/FINISH.sh"

BUILD/compile-pentium-gprof

@@ -3,7 +3,7 @@
 path=`dirname $0`
 . "$path/SETUP.sh"
 
-extra_flags="$pentium_cflags -O2 -pg -g"
-extra_configs="$pentium_configs $debug_configs --disable-shared $static_link"
+extra_flags="$pentium_cflags $gprof_compile_flags"
+extra_configs="$pentium_configs $debug_configs $gprof_link_flags"
 
 . "$path/FINISH.sh"

BUILD/compile-pentium64-gcov

+#! /bin/sh
+
+path=`dirname $0`
+. "$path/SETUP.sh"
+
+# Need to disable ccache, or we loose the gcov-needed compiler output files.
+CCACHE_DISABLE=1
+export CCACHE_DISABLE
+
+export LDFLAGS="$gcov_link_flags"
+
+extra_flags="$pentium64_cflags $debug_cflags $max_cflags $gcov_compile_flags"
+c_warnings="$c_warnings $debug_extra_warnings"
+cxx_warnings="$cxx_warnings $debug_extra_warnings"
+extra_configs="$pentium64_configs $debug_configs $gcov_configs $max_configs"
+
+. "$path/FINISH.sh"

BUILD/compile-pentium64-gprof

+#! /bin/sh
+
+path=`dirname $0`
+. "$path/SETUP.sh"
+
+extra_flags="$pentium64_cflags $gprof_compile_flags"
+extra_configs="$pentium64_configs $debug_configs $gprof_link_flags"
+
+. "$path/FINISH.sh"

client/mysql.cc

@@ -1263,6 +1263,7 @@ static bool add_line(String &buffer,char *line,char *in_string,
   char buff[80], *pos, *out;
   COMMANDS *com;
   bool need_space= 0;
+  bool ss_comment= 0;
   DBUG_ENTER("add_line");
 
   if (!line[0] && buffer.is_empty())
@@ -1316,6 +1317,19 @@ static bool add_line(String &buffer,char *line,char *in_string,
         if ((*com->func)(&buffer,pos-1) > 0)
           DBUG_RETURN(1);                       // Quit
         if (com->takes_params)
+        {
+          if (ss_comment)
+          {
+            /*
+              If a client-side macro appears inside a server-side comment,
+              discard all characters in the comment after the macro (that is,
+              until the end of the comment rather than the next delimiter)
+            */
+            for (pos++; *pos && (*pos != '*' || *(pos + 1) != '/'); pos++)
+              ;
+            pos--;
+          }
+          else
           {
             for (pos++ ;
                  *pos && (*pos != *delimiter ||
@@ -1326,6 +1340,7 @@ static bool add_line(String &buffer,char *line,char *in_string,
             else 
               pos+= delimiter_length - 1; // Point at last delim char
           }
+        }
         out=line;
       }
       else
@@ -1386,7 +1401,7 @@ static bool add_line(String &buffer,char *line,char *in_string,
         out=line;
       }
     }
-    else if (*ml_comment && inchar == '*' && *(pos + 1) == '/')
+    else if (*ml_comment && !ss_comment && inchar == '*' && *(pos + 1) == '/')
     {
       pos++;
       *ml_comment= 0;
@@ -1394,6 +1409,11 @@ static bool add_line(String &buffer,char *line,char *in_string,
     }      
     else
     {						// Add found char to buffer
+      if (!*in_string && inchar == '/' && *(pos + 1) == '*' &&
+          *(pos + 2) == '!')
+        ss_comment= 1;
+      else if (!*in_string && ss_comment && inchar == '*' && *(pos + 1) == '/')
+        ss_comment= 0;
       if (inchar == *in_string)
 	*in_string= 0;
       else if (!*ml_comment && !*in_string &&

mysql-test/include/deadlock.inc

@@ -144,4 +144,29 @@ disconnect con1;
 disconnect con2;
 drop table t1, t2;
 
-# End of 4.1 tests
+--echo End of 4.1 tests
+
+#
+# Bug#25164 create table `a` as select * from `A` hangs
+#
+
+set storage_engine=innodb;
+
+--disable_warnings
+drop table if exists a;
+drop table if exists A;
+--enable_warnings
+
+create table A (c int);
+insert into A (c) values (0);
+--error 0,ER_LOCK_DEADLOCK,ER_UPDATE_TABLE_USED
+create table a as select * from A;
+drop table A;
+
+--disable_warnings
+drop table if exists a;
+--enable_warnings
+
+set storage_engine=default;
+
+--echo End of 5.0 tests.

mysql-test/include/handler.inc

@@ -479,3 +479,22 @@ handler t1 open;
 --echo --> client 1
 connection default;
 drop table t1;
+
+#
+# Bug#30632 HANDLER read failure causes hang
+#
+--disable_warnings
+drop table if exists t1;
+--enable_warnings
+create table t1 (a int);
+handler t1 open as t1_alias;
+--error 1176
+handler t1_alias read a next;
+--error 1054
+handler t1_alias READ a next where inexistent > 0;
+--error 1176
+handler t1_alias read a next;
+--error 1054
+handler t1_alias READ a next where inexistent > 0;
+handler t1_alias close;
+drop table t1;

mysql-test/r/comments.result

@@ -36,3 +36,18 @@ select 1/*!999992*/;
 select 1 + /*!00000 2 */ + 3 /*!99999 noise*/ + 4;
 1 +  2  + 3  + 4
 10
+drop table if exists table_28779;
+create table table_28779 (a int);
+prepare bar from "DELETE FROM table_28779 WHERE a = 7 OR 1=1/*' AND b = 'bar';";
+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 '/*' AND b = 'bar'' at line 1
+prepare bar from "DELETE FROM table_28779 WHERE a = 7 OR 1=1/*' AND b = 'bar';*";
+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 '/*' AND b = 'bar';*' at line 1
+prepare bar from "DELETE FROM table_28779 WHERE a = 7 OR 1=1/*! AND 2=2;";
+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 '' at line 1
+prepare bar from "DELETE FROM table_28779 WHERE a = 7 OR 1=1/*! AND 2=2;*";
+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 ';*' at line 1
+prepare bar from "DELETE FROM table_28779 WHERE a = 7 OR 1=1/*!98765' AND b = 'bar';";
+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 '/*!98765' AND b = 'bar'' at line 1
+prepare bar from "DELETE FROM table_28779 WHERE a = 7 OR 1=1/*!98765' AND b = 'bar';*";
+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 '/*!98765' AND b = 'bar';*' at line 1
+drop table table_28779;

mysql-test/r/deadlock_innodb.result

@@ -112,3 +112,14 @@ id	x
 commit;
 # Switch to connection default + disconnect con1 and con2
 drop table t1, t2;
+End of 4.1 tests
+set storage_engine=innodb;
+drop table if exists a;
+drop table if exists A;
+create table A (c int);
+insert into A (c) values (0);
+create table a as select * from A;
+drop table A;
+drop table if exists a;
+set storage_engine=default;
+End of 5.0 tests.

mysql-test/r/events.result

@@ -499,6 +499,9 @@ set global event_scheduler=off;
 select /*4*/ user, host, db, command, state, info from information_schema.processlist where (command!='Daemon' || user='event_scheduler') and (info is null or info not like '%processlist%') order by info;
 user	host	db	command	state	info
 root	localhost	events_test	Connect	User lock	select get_lock("test_lock2_1", 20)
+select release_lock("test_lock2_1");
+release_lock("test_lock2_1")
+1
 drop event закачка21;
 create table t_16 (s1 int);
 create trigger t_16_bi before insert on t_16 for each row create event  e_16 on schedule every 1 second do set @a=5;

mysql-test/r/handler_innodb.result

@@ -522,3 +522,16 @@ handler t1 open;
 ERROR HY000: Table storage engine for 't1' doesn't have this option
 --> client 1
 drop table t1;
+drop table if exists t1;
+create table t1 (a int);
+handler t1 open as t1_alias;
+handler t1_alias read a next;
+ERROR 42000: Key 'a' doesn't exist in table 't1_alias'
+handler t1_alias READ a next where inexistent > 0;
+ERROR 42S22: Unknown column 'inexistent' in 'field list'
+handler t1_alias read a next;
+ERROR 42000: Key 'a' doesn't exist in table 't1_alias'
+handler t1_alias READ a next where inexistent > 0;
+ERROR 42S22: Unknown column 'inexistent' in 'field list'
+handler t1_alias close;
+drop table t1;

mysql-test/r/handler_myisam.result

@@ -522,3 +522,16 @@ handler t1 open;
 ERROR HY000: Table storage engine for 't1' doesn't have this option
 --> client 1
 drop table t1;
+drop table if exists t1;
+create table t1 (a int);
+handler t1 open as t1_alias;
+handler t1_alias read a next;
+ERROR 42000: Key 'a' doesn't exist in table 't1_alias'
+handler t1_alias READ a next where inexistent > 0;
+ERROR 42S22: Unknown column 'inexistent' in 'field list'
+handler t1_alias read a next;
+ERROR 42000: Key 'a' doesn't exist in table 't1_alias'
+handler t1_alias READ a next where inexistent > 0;
+ERROR 42S22: Unknown column 'inexistent' in 'field list'
+handler t1_alias close;
+drop table t1;

mysql-test/r/mysql.result

@@ -176,5 +176,7 @@ ERROR at line 1: DELIMITER cannot contain a backslash character
 ERROR at line 1: DELIMITER cannot contain a backslash character
 1
 1
+1
+1
 End of 5.0 tests
 WARNING: --server-arg option not supported in this configuration.

mysql-test/r/sp-error.result

@@ -969,6 +969,18 @@ CREATE TRIGGER tr1 BEFORE INSERT ON t1 FOR EACH ROW BEGIN create user 'mysqltest
 ERROR HY000: Explicit or implicit commit is not allowed in stored function or trigger.
 CREATE FUNCTION bug_13627_f() returns int BEGIN create user 'mysqltest_1'; return 1; END |
 ERROR HY000: Explicit or implicit commit is not allowed in stored function or trigger.
+CREATE TRIGGER bug21975 BEFORE INSERT ON t1 FOR EACH ROW BEGIN grant select on t1 to 'mysqltest_1'; END |
+ERROR HY000: Explicit or implicit commit is not allowed in stored function or trigger.
+CREATE FUNCTION bug21975() returns int BEGIN grant select on t1 to 'mysqltest_1'; return 1; END |
+ERROR HY000: Explicit or implicit commit is not allowed in stored function or trigger.
+CREATE TRIGGER bug21975 BEFORE INSERT ON t1 FOR EACH ROW BEGIN revoke select on t1 from 'mysqltest_1'; END |
+ERROR HY000: Explicit or implicit commit is not allowed in stored function or trigger.
+CREATE FUNCTION bug21975() returns int BEGIN revoke select on t1 from 'mysqltest_1'; return 1; END |
+ERROR HY000: Explicit or implicit commit is not allowed in stored function or trigger.
+CREATE TRIGGER bug21975 BEFORE INSERT ON t1 FOR EACH ROW BEGIN revoke all privileges on *.* from 'mysqltest_1'; END |
+ERROR HY000: Explicit or implicit commit is not allowed in stored function or trigger.
+CREATE FUNCTION bug21975() returns int BEGIN revoke all privileges on *.* from 'mysqltest_1'; return 1; END |
+ERROR HY000: Explicit or implicit commit is not allowed in stored function or trigger.
 CREATE TRIGGER tr1 BEFORE INSERT ON t1 FOR EACH ROW BEGIN drop user 'mysqltest_1'; END |
 ERROR HY000: Explicit or implicit commit is not allowed in stored function or trigger.
 CREATE FUNCTION bug_13627_f() returns int BEGIN drop user 'mysqltest_1'; return 1; END |

mysql-test/r/sp.result

@@ -6546,4 +6546,79 @@ DROP VIEW v1;
 DROP FUNCTION f1;
 DROP FUNCTION f2;
 DROP TABLE t1;
+drop table if exists t1;
+drop procedure if exists p1;
+create table t1 (value varchar(15));
+create procedure p1() update t1 set value='updated' where value='old';
+call p1();
+insert into t1 (value) values ("old");
+select get_lock('b26162',120);
+get_lock('b26162',120)
+1
+select 'rl_acquirer', value from t1 where get_lock('b26162',120);;
+set session low_priority_updates=on;
+call p1();;
+select 'rl_contender', value from t1;
+rl_contender	value
+rl_contender	old
+select release_lock('b26162');
+release_lock('b26162')
+1
+rl_acquirer	value
+rl_acquirer	old
+drop procedure p1;
+drop table t1;
+set session low_priority_updates=default;
+
+# Bug#13675.
+
+DROP PROCEDURE IF EXISTS p1;
+DROP PROCEDURE IF EXISTS p2;
+DROP TABLE IF EXISTS t1;
+
+CREATE PROCEDURE p1(v DATETIME) CREATE TABLE t1 SELECT v;
+CREATE PROCEDURE p2(v INT) CREATE TABLE t1 SELECT v;
+
+CALL p1(NOW());
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `v` datetime DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+
+DROP TABLE t1;
+
+CALL p1('text');
+Warnings:
+Warning	1264	Out of range value for column 'v' at row 1
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `v` datetime DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+
+DROP TABLE t1;
+
+CALL p2(10);
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `v` bigint(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+
+DROP TABLE t1;
+
+CALL p2('text');
+Warnings:
+Warning	1366	Incorrect integer value: 'text' for column 'v' at row 1
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `v` bigint(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+
+DROP TABLE t1;
+
+DROP PROCEDURE p1;
+DROP PROCEDURE p2;
 End of 5.0 tests

mysql-test/suite/rpl/r/rpl_binlog_grant.result

+drop database if exists d1;
+create database d1;
+use d1;
+create table t (s1 int) engine=innodb;
+set @@autocommit=0;
+start transaction;
+insert into t values (1);
+grant select on t to x@y;
+rollback;
+show grants for x@y;
+Grants for x@y
+GRANT USAGE ON *.* TO 'x'@'y'
+GRANT SELECT ON `d1`.`t` TO 'x'@'y'
+show binlog events;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+master-bin.000001	4	Format_desc	1	106	Server ver: VERSION, Binlog ver: 4
+master-bin.000001	106	Query	1	193	drop database if exists d1
+master-bin.000001	193	Query	1	272	create database d1
+master-bin.000001	272	Query	1	370	use `d1`; create table t (s1 int) engine=innodb
+master-bin.000001	370	Query	1	436	use `d1`; BEGIN
+master-bin.000001	436	Query	1	521	use `d1`; insert into t values (1)
+master-bin.000001	521	Xid	1	548	COMMIT /* xid=12 */
+master-bin.000001	548	Query	1	633	use `d1`; grant select on t to x@y
+start transaction;
+insert into t values (2);
+revoke select on t from x@y;
+commit;
+select * from t;
+s1
+1
+2
+show grants for x@y;
+Grants for x@y
+GRANT USAGE ON *.* TO 'x'@'y'
+show binlog events;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+master-bin.000001	4	Format_desc	1	106	Server ver: VERSION, Binlog ver: 4
+master-bin.000001	106	Query	1	193	drop database if exists d1
+master-bin.000001	193	Query	1	272	create database d1
+master-bin.000001	272	Query	1	370	use `d1`; create table t (s1 int) engine=innodb
+master-bin.000001	370	Query	1	436	use `d1`; BEGIN
+master-bin.000001	436	Query	1	521	use `d1`; insert into t values (1)
+master-bin.000001	521	Xid	1	548	COMMIT /* xid=12 */
+master-bin.000001	548	Query	1	633	use `d1`; grant select on t to x@y
+master-bin.000001	633	Query	1	699	use `d1`; BEGIN
+master-bin.000001	699	Query	1	784	use `d1`; insert into t values (2)
+master-bin.000001	784	Xid	1	811	COMMIT /* xid=18 */
+master-bin.000001	811	Query	1	899	use `d1`; revoke select on t from x@y
+drop user x@y;
+drop database d1;

mysql-test/suite/rpl/t/rpl_binlog_grant.test

+-- source include/have_innodb.inc
+-- source include/not_embedded.inc
+-- source include/have_binlog_format_mixed_or_statement.inc
+
+let $VERSION=`select version()`;
+
+# Bug #21975: grant/revoke statements in transaction
+# used to disappear from binlog upon rallback.
+# Now GRANT/REVOKE do implicitly commit
+# transaction
+
+--disable_warnings
+drop database if exists d1;
+--enable_warnings
+create database d1;
+use d1;
+create table t (s1 int) engine=innodb;
+set @@autocommit=0;
+start transaction;
+insert into t values (1);
+grant select on t to x@y;
+#
+# There is no active transaction here
+#
+rollback;
+show grants for x@y;
+--replace_result $VERSION VERSION
+show binlog events;
+start transaction;
+insert into t values (2);
+revoke select on t from x@y;
+#
+# There is no active transaction here
+#
+commit;
+select * from t;
+show grants for x@y;
+--replace_result $VERSION VERSION
+show binlog events;
+drop user x@y;
+drop database d1;

mysql-test/t/comments.test

@@ -34,3 +34,34 @@ select 1/*!999992*/;
 
 select 1 + /*!00000 2 */ + 3 /*!99999 noise*/ + 4;
 
+#
+# Bug#28779 (mysql_query() allows execution of statements with unbalanced
+# comments)
+#
+
+--disable_warnings
+drop table if exists table_28779;
+--enable_warnings
+
+create table table_28779 (a int);
+
+--error 1064
+prepare bar from "DELETE FROM table_28779 WHERE a = 7 OR 1=1/*' AND b = 'bar';";
+
+--error 1064
+prepare bar from "DELETE FROM table_28779 WHERE a = 7 OR 1=1/*' AND b = 'bar';*";
+
+--error 1064
+prepare bar from "DELETE FROM table_28779 WHERE a = 7 OR 1=1/*! AND 2=2;";
+
+--error 1064
+prepare bar from "DELETE FROM table_28779 WHERE a = 7 OR 1=1/*! AND 2=2;*";
+
+--error 1064
+prepare bar from "DELETE FROM table_28779 WHERE a = 7 OR 1=1/*!98765' AND b = 'bar';";
+
+--error 1064
+prepare bar from "DELETE FROM table_28779 WHERE a = 7 OR 1=1/*!98765' AND b = 'bar';*";
+
+drop table table_28779;
+

mysql-test/t/events.test

@@ -466,13 +466,17 @@ drop event закачка;
 set global event_scheduler=1;
 select get_lock("test_lock2_1", 20);
 create event закачка21 on schedule every 10 hour do select get_lock("test_lock2_1", 20);
---sleep 1
+let $wait_condition= select count(*) = 3 from information_schema.processlist;
+--source include/wait_condition.inc
 --echo "Should have only 3 processes: the scheduler, our conn and the locked event"
 select /*3*/ user, host, db, command, state, info from information_schema.processlist where (command!='Daemon' || user='event_scheduler') and (info is null or info not like '%processlist%') order by info;
 set global event_scheduler=off;
---sleep 0.8
+let $wait_condition= select count(*) =1 from information_schema.processlist
+  where (command!='Daemon' || user='event_scheduler') and (info is null or info not like '%processlist%') order by info;
+--source include/wait_condition.inc
 --echo "Should have only our process now:"
 select /*4*/ user, host, db, command, state, info from information_schema.processlist where (command!='Daemon' || user='event_scheduler') and (info is null or info not like '%processlist%') order by info;
+select release_lock("test_lock2_1");
 drop event закачка21;
 let $wait_condition=
   select count(*) = 0 from information_schema.processlist

mysql-test/t/mysql.test

@@ -274,6 +274,11 @@ EOF
 --exec $MYSQL --pager="540bytelengthstringxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" -e "select 1" > /dev/null 2>&1
 --exec $MYSQL --character-sets-dir="540bytelengthstringxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" -e "select 1" 2>&1
 
+#
+# bug #30164: Using client side macro inside server side comments generates broken queries
+#
+--exec $MYSQL test -e "/*! \C latin1 */ select 1;"
+
 --echo End of 5.0 tests
 
 #

mysql-test/t/sp-error.test

@@ -1386,6 +1386,21 @@ CREATE TRIGGER tr1 BEFORE INSERT ON t1 FOR EACH ROW BEGIN create user 'mysqltest
 -- error ER_COMMIT_NOT_ALLOWED_IN_SF_OR_TRG
 CREATE FUNCTION bug_13627_f() returns int BEGIN create user 'mysqltest_1'; return 1; END |
 
+-- error ER_COMMIT_NOT_ALLOWED_IN_SF_OR_TRG
+CREATE TRIGGER bug21975 BEFORE INSERT ON t1 FOR EACH ROW BEGIN grant select on t1 to 'mysqltest_1'; END |
+-- error ER_COMMIT_NOT_ALLOWED_IN_SF_OR_TRG
+CREATE FUNCTION bug21975() returns int BEGIN grant select on t1 to 'mysqltest_1'; return 1; END |
+
+-- error ER_COMMIT_NOT_ALLOWED_IN_SF_OR_TRG
+CREATE TRIGGER bug21975 BEFORE INSERT ON t1 FOR EACH ROW BEGIN revoke select on t1 from 'mysqltest_1'; END |
+-- error ER_COMMIT_NOT_ALLOWED_IN_SF_OR_TRG
+CREATE FUNCTION bug21975() returns int BEGIN revoke select on t1 from 'mysqltest_1'; return 1; END |
+
+-- error ER_COMMIT_NOT_ALLOWED_IN_SF_OR_TRG
+CREATE TRIGGER bug21975 BEFORE INSERT ON t1 FOR EACH ROW BEGIN revoke all privileges on *.* from 'mysqltest_1'; END |
+-- error ER_COMMIT_NOT_ALLOWED_IN_SF_OR_TRG
+CREATE FUNCTION bug21975() returns int BEGIN revoke all privileges on *.* from 'mysqltest_1'; return 1; END |
+
 -- error ER_COMMIT_NOT_ALLOWED_IN_SF_OR_TRG
 CREATE TRIGGER tr1 BEFORE INSERT ON t1 FOR EACH ROW BEGIN drop user 'mysqltest_1'; END |
 -- error ER_COMMIT_NOT_ALLOWED_IN_SF_OR_TRG

mysql-test/t/sp.test

@@ -7494,4 +7494,123 @@ DROP FUNCTION f1;
 DROP FUNCTION f2;
 DROP TABLE t1;
 
+#
+# Bug#29936 Stored Procedure DML ignores low_priority_updates setting
+#
+
+--disable_warnings
+drop table if exists t1;
+drop procedure if exists p1;
+--enable_warnings
+
+create table t1 (value varchar(15));
+create procedure p1() update t1 set value='updated' where value='old';
+
+# load the procedure into sp cache and execute once
+call p1();
+
+insert into t1 (value) values ("old");
+
+connect (rl_holder, localhost, root,,);
+connect (rl_acquirer, localhost, root,,);
+connect (rl_contender, localhost, root,,);
+connect (rl_wait, localhost, root,,);
+
+connection rl_holder;
+select get_lock('b26162',120);
+
+connection rl_acquirer;
+--send select 'rl_acquirer', value from t1 where get_lock('b26162',120);
+
+# we must wait till this select opens and locks the tables
+connection rl_wait;
+let $wait_condition=
+  select count(*) = 1 from information_schema.processlist
+  where state = "User lock" and
+  info = "select 'rl_acquirer', value from t1 where get_lock('b26162',120)";
+--source include/wait_condition.inc
+
+connection default;
+set session low_priority_updates=on;
+--send call p1();
+
+connection rl_wait;
+let $wait_condition=
+  select count(*) = 1 from information_schema.processlist
+  where state = "Locked" and
+  info = "update t1 set value='updated' where value='old'";
+--source include/wait_condition.inc
+
+connection rl_contender;
+select 'rl_contender', value from t1;
+
+connection rl_holder;
+select release_lock('b26162');
+
+connection rl_acquirer;
+--reap
+connection default;
+--reap
+
+disconnect rl_holder;
+disconnect rl_acquirer;
+disconnect rl_wait;
+drop procedure p1;
+drop table t1;
+set session low_priority_updates=default;
+
+#
+# Bug#13675: DATETIME/DATE type in store proc param seems to be converted as
+# varbinary
+#
+
+--echo
+--echo # Bug#13675.
+--echo
+
+--disable_warnings
+DROP PROCEDURE IF EXISTS p1;
+DROP PROCEDURE IF EXISTS p2;
+
+DROP TABLE IF EXISTS t1;
+--enable_warnings
+
+--echo
+
+CREATE PROCEDURE p1(v DATETIME) CREATE TABLE t1 SELECT v;
+
+CREATE PROCEDURE p2(v INT) CREATE TABLE t1 SELECT v;
+
+--echo
+CALL p1(NOW());
+SHOW CREATE TABLE t1;
+
+--echo
+DROP TABLE t1;
+
+--echo
+CALL p1('text');
+SHOW CREATE TABLE t1;
+
+--echo
+DROP TABLE t1;
+
+--echo
+CALL p2(10);
+SHOW CREATE TABLE t1;
+
+--echo
+DROP TABLE t1;
+
+--echo
+CALL p2('text');
+SHOW CREATE TABLE t1;
+
+--echo
+DROP TABLE t1;
+
+--echo
+DROP PROCEDURE p1;
+DROP PROCEDURE p2;
+
 --echo End of 5.0 tests

sql/item_cmpfunc.h

@@ -1424,6 +1424,7 @@ public:
   Item_cond(List<Item> &nlist)
     :Item_bool_func(), list(nlist), abort_on_null(0) {}
   bool add(Item *item) { return list.push_back(item); }
+  bool add_at_head(Item *item) { return list.push_front(item); }
   void add_at_head(List<Item> *nlist) { list.prepand(nlist); }
   bool fix_fields(THD *, Item **ref);
 
@@ -1616,6 +1617,15 @@ public:
   Item *neg_transformer(THD *thd);
 };
 
+inline bool is_cond_and(Item *item)
+{
+  if (item->type() != Item::COND_ITEM)
+    return FALSE;
+
+  Item_cond *cond_item= (Item_cond*) item;
+  return (cond_item->functype() == Item_func::COND_AND_FUNC);
+}
+
 class Item_cond_or :public Item_cond
 {
 public:
@@ -1637,6 +1647,14 @@ public:
   Item *neg_transformer(THD *thd);
 };
 
+inline bool is_cond_or(Item *item)
+{
+  if (item->type() != Item::COND_ITEM)
+    return FALSE;
+
+  Item_cond *cond_item= (Item_cond*) item;
+  return (cond_item->functype() == Item_func::COND_OR_FUNC);
+}
 
 /*
   XOR is Item_cond, not an Item_int_func because we could like to

sql/lock.cc

@@ -276,6 +276,8 @@ MYSQL_LOCK *mysql_lock_tables(THD *thd, TABLE **tables, uint count,
                                                      thd->lock_id)];
     if (rc > 1)                                 /* a timeout or a deadlock */
     {
+      if (sql_lock->table_count)
+        VOID(unlock_external(thd, sql_lock->table, sql_lock->table_count));
       my_error(rc, MYF(0));
       my_free((uchar*) sql_lock,MYF(0));
       sql_lock= 0;

sql/sp.cc

@@ -575,7 +575,7 @@ db_load_routine(THD *thd, int type, sp_name *name, sp_head **sphp,
     we'll update it later in switch_query_ctx().
   */
 
-  if ((ret= sp_use_new_db(thd, name->m_db, &old_db, 1, &dbchanged)))
+  if ((ret= sp_use_new_db(thd, name->m_db, &old_db, TRUE, &dbchanged)))
     goto end;
 
   thd->spcont= NULL;
@@ -2028,34 +2028,41 @@ create_string(THD *thd, String *buf,
 
 
 
-/*
+/**
   Change the current database if needed.
 
-  SYNOPSIS
-    sp_use_new_db()
-      thd            thread handle
-      new_db         new database name (a string and its length)
-      old_db         [IN] str points to a buffer where to store the old
-                          database, length contains the size of the buffer
-                     [OUT] if old db was not NULL, its name is copied
-                     to the buffer pointed at by str and length is updated
-                     accordingly. Otherwise str[0] is set to '\0' and length
-                     is set to 0. The out parameter should be used only if
-                     the database name has been changed (see dbchangedp).
-     dbchangedp      [OUT] is set to TRUE if the current database is changed,
-                     FALSE otherwise. A database is not changed if the old
-                     name is the same as the new one, both names are empty,
-                     or an error has occurred.
-
-  RETURN VALUE
-    0                success
-    1                access denied or out of memory (the error message is
-                     set in THD)
+  @param[in]      thd             thread handle
+  @param[in]      new_db          new database name
+  @param[in, out] old_db          IN: str points to a buffer where to store
+                                  the old database, length contains the
+                                  size of the buffer
+                                  OUT: if old db was not NULL, its name is
+                                  copied to the buffer pointed at by str
+                                  and length is updated accordingly.
+                                  Otherwise str[0] is set to '\0' and
+                                  length is set to 0. The out parameter
+                                  should be used only if the database name
+                                  has been changed (see dbchangedp).
+  @param[in]      force_switch    Flag to mysql_change_db(). For more information,
+                                  see mysql_change_db() comment.
+  @param[out]     dbchangedp      is set to TRUE if the current database is
+                                  changed, FALSE otherwise. The current
+                                  database is not changed if the old name
+                                  is equal to the new one, both names are
+                                  empty, or an error has occurred.
+
+  @return Operation status.
+    @retval 0 on success
+    @retval 1 access denied or out of memory
+              (the error message is set in THD)
 */
 
 int
-sp_use_new_db(THD *thd, LEX_STRING new_db, LEX_STRING *old_db,
-	      bool no_access_check, bool *dbchangedp)
+sp_use_new_db(THD *thd,
+              LEX_STRING new_db,
+              LEX_STRING *old_db,
+              bool force_switch,
+              bool *dbchangedp)
 {
   int ret;
   DBUG_ENTER("sp_use_new_db");
@@ -2086,7 +2093,7 @@ sp_use_new_db(THD *thd, LEX_STRING new_db, LEX_STRING *old_db,
     DBUG_RETURN(0);
   }
 
-  ret= mysql_change_db(thd, &new_db, no_access_check);
+  ret= mysql_change_db(thd, &new_db, force_switch);
 
   *dbchangedp= ret == 0;
   DBUG_RETURN(ret);

sql/sp_head.cc

@@ -249,11 +249,14 @@ sp_get_flags_for_command(LEX *lex)
   case SQLCOM_CREATE_TRIGGER:
   case SQLCOM_CREATE_USER:
   case SQLCOM_ALTER_TABLE:
+  case SQLCOM_GRANT:
+  case SQLCOM_REVOKE:
   case SQLCOM_BEGIN:
   case SQLCOM_RENAME_TABLE:
   case SQLCOM_RENAME_USER:
   case SQLCOM_DROP_INDEX:
   case SQLCOM_DROP_DB:
+  case SQLCOM_REVOKE_ALL:
   case SQLCOM_DROP_USER:
   case SQLCOM_DROP_VIEW:
   case SQLCOM_DROP_TRIGGER:

sql/sql_class.h

@@ -1802,11 +1802,27 @@ public:
     }
   }
 
-  /*
-    Initialize the current database from a NULL-terminated string with length
-    If we run out of memory, we free the current database and return TRUE.
-    This way the user will notice the error as there will be no current
-    database selected (in addition to the error message set by malloc).
+  /**
+    Set the current database; use deep copy of C-string.
+
+    @param new_db     a pointer to the new database name.
+    @param new_db_len length of the new database name.
+
+    Initialize the current database from a NULL-terminated string with
+    length. If we run out of memory, we free the current database and
+    return TRUE.  This way the user will notice the error as there will be
+    no current database selected (in addition to the error message set by
+    malloc).
+
+    @note This operation just sets {thd->db, thd->db_length}. Switching the
+    current database usually involves other actions, like switching other
+    database attributes including security context. In the future, this
+    operation will be made private and more convenient interface will be
+    provided.
+
+    @return Operation status
+      @retval FALSE Success
+      @retval TRUE  Out-of-memory error
   */
   bool set_db(const char *new_db, size_t new_db_len)
   {
@@ -1821,6 +1837,19 @@ public:
     db_length= db ? new_db_len : 0;
     return new_db && !db;
   }
+
+  /**
+    Set the current database; use shallow copy of C-string.
+
+    @param new_db     a pointer to the new database name.
+    @param new_db_len length of the new database name.
+
+    @note This operation just sets {thd->db, thd->db_length}. Switching the
+    current database usually involves other actions, like switching other
+    database attributes including security context. In the future, this
+    operation will be made private and more convenient interface will be
+    provided.
+  */
   void reset_db(char *new_db, size_t new_db_len)
   {
     db= new_db;

sql/sql_db.cc

@@ -39,6 +39,10 @@ static long mysql_rm_known_files(THD *thd, MY_DIR *dirp,
          
 static long mysql_rm_arc_files(THD *thd, MY_DIR *dirp, const char *org_path);
 static my_bool rm_dir_w_symlink(const char *org_path, my_bool send_error);
+static void mysql_change_db_impl(THD *thd,
+                                 LEX_STRING *new_db_name,
+                                 ulong new_db_access,
+                                 CHARSET_INFO *new_db_charset);
 
 
 /* Database lock hash */
@@ -997,7 +1001,7 @@ exit:
     it to 0.
   */
   if (thd->db && !strcmp(thd->db, db))
-    thd->set_db(NULL, 0);
+    mysql_change_db_impl(thd, NULL, 0, thd->variables.collation_server);
   VOID(pthread_mutex_unlock(&LOCK_mysql_create_db));
   start_waiting_global_read_lock(thd);
 exit2:
@@ -1356,21 +1360,48 @@ static void mysql_change_db_impl(THD *thd,
 
 
 /**
-  @brief Change the current database.
+  @brief Change the current database and its attributes.
 
   @param thd          thread handle
   @param new_db_name  database name
-  @param force_switch if this flag is set (TRUE), mysql_change_db() will
-                      switch to NULL db if the specified database is not
-                      available anymore. Corresponding warning will be
-                      thrown in this case. This flag is used to change
-                      database in stored-routine-execution code.
-
-  @details Check that the database name corresponds to a valid and existent
-  database, check access rights (unless called with no_access_check), and
-  set the current database. This function is called to change the current
-  database upon user request (COM_CHANGE_DB command) or temporarily, to
-  execute a stored routine.
+  @param force_switch if force_switch is FALSE, then the operation will fail if
+
+                        - new_db_name is NULL or empty;
+
+                        - OR new database name is invalid
+                          (check_db_name() failed);
+
+                        - OR user has no privilege on the new database;
+
+                        - OR new database does not exist;
+
+                      if force_switch is TRUE, then
+
+                        - if new_db_name is NULL or empty, the current
+                          database will be NULL, @@collation_database will
+                          be set to @@collation_server, the operation will
+                          succeed.
+
+                        - if new database name is invalid
+                          (check_db_name() failed), the current database
+                          will be NULL, @@collation_database will be set to
+                          @@collation_server, but the operation will fail;
+
+                        - user privileges will not be checked
+                          (THD::db_access however is updated);
+
+                          TODO: is this really the intention?
+                                (see sp-security.test).
+
+                        - if new database does not exist,the current database
+                          will be NULL, @@collation_database will be set to
+                          @@collation_server, a warning will be thrown, the
+                          operation will succeed.
+
+  @details The function checks that the database name corresponds to a
+  valid and existent database, checks access rights and changes the current
+  database with database attributes (@@collation_database session variable,
+  THD::db_access).
 
   This function is not the only way to switch the database that is
   currently employed. When the replication slave thread switches the
@@ -1407,8 +1438,13 @@ bool mysql_change_db(THD *thd, const LEX_STRING *new_db_name, bool force_switch)
     if (force_switch)
     {
       /*
-        This can only happen when we restore the old db in THD after
-        execution of a routine is complete. Change db to NULL.
+        This can happen only if we're switching the current database back
+        after loading stored program. The thing is that loading of stored
+        program can happen when there is no current database.
+
+        TODO: actually, new_db_name and new_db_name->str seem to be always
+        non-NULL. In case of stored program, new_db_name->str == "" and
+        new_db_name->length == 0.
       */
 
       mysql_change_db_impl(thd, NULL, 0, thd->variables.collation_server);
@@ -1426,7 +1462,7 @@ bool mysql_change_db(THD *thd, const LEX_STRING *new_db_name, bool force_switch)
   if (my_strcasecmp(system_charset_info, new_db_name->str,
                     INFORMATION_SCHEMA_NAME.str) == 0)
   {
-    /* Switch database to INFORMATION_SCHEMA. */
+    /* Switch the current database to INFORMATION_SCHEMA. */
 
     mysql_change_db_impl(thd, &INFORMATION_SCHEMA_NAME, SELECT_ACL,
                          system_charset_info);
@@ -1453,8 +1489,8 @@ bool mysql_change_db(THD *thd, const LEX_STRING *new_db_name, bool force_switch)
     even if we are called from sp_head::execute().
 
     It's next to impossible however to get this error when we are called
-    from sp_head::execute(). But let's switch database to NULL in this case
-    to be sure.
+    from sp_head::execute(). But let's switch the current database to NULL
+    in this case to be sure.
   */
 
   if (check_db_name(&new_db_file_name))
@@ -1463,10 +1499,8 @@ bool mysql_change_db(THD *thd, const LEX_STRING *new_db_name, bool force_switch)
     my_free(new_db_file_name.str, MYF(0));
 
     if (force_switch)
-    {
-      /* Change db to NULL. */
       mysql_change_db_impl(thd, NULL, 0, thd->variables.collation_server);
-    }
+
     DBUG_RETURN(TRUE);
   }
 
@@ -1501,6 +1535,8 @@ bool mysql_change_db(THD *thd, const LEX_STRING *new_db_name, bool force_switch)
   {
     if (force_switch)
     {
+      /* Throw a warning and free new_db_file_name. */
+
       push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_NOTE,
                           ER_BAD_DB_ERROR, ER(ER_BAD_DB_ERROR),
                           new_db_file_name.str);
@@ -1511,12 +1547,19 @@ bool mysql_change_db(THD *thd, const LEX_STRING *new_db_name, bool force_switch)
 
       mysql_change_db_impl(thd, NULL, 0, thd->variables.collation_server);
 
+      /* The operation succeed. */
+
       DBUG_RETURN(FALSE);
     }
     else
     {
+      /* Report an error and free new_db_file_name. */
+
       my_error(ER_BAD_DB_ERROR, MYF(0), new_db_file_name.str);
       my_free(new_db_file_name.str, MYF(0));
+
+      /* The operation failed. */
+
       DBUG_RETURN(TRUE);
     }
   }
@@ -1829,7 +1872,7 @@ bool mysql_rename_db(THD *thd, LEX_STRING *old_db, LEX_STRING *new_db)
 
   /* Step9: Let's do "use newdb" if we renamed the current database */
   if (change_to_newdb)
-    error|= mysql_change_db(thd, new_db, 0);
+    error|= mysql_change_db(thd, new_db, FALSE);
 
 exit:
   pthread_mutex_lock(&LOCK_lock_db);

sql/sql_handler.cc

@@ -444,7 +444,7 @@ bool mysql_ha_read(THD *thd, TABLE_LIST *tables,
       cond->cleanup();                          // File was reopened
     if ((!cond->fixed &&
 	 cond->fix_fields(thd, &cond)) || cond->check_cols(1))
-      goto err0;
+      goto err;
   }
 
   if (keyname)
@@ -452,13 +452,13 @@ bool mysql_ha_read(THD *thd, TABLE_LIST *tables,
     if ((keyno=find_type(keyname, &table->s->keynames, 1+2)-1)<0)
     {
       my_error(ER_KEY_DOES_NOT_EXITS, MYF(0), keyname, tables->alias);
-      goto err0;
+      goto err;
     }
   }
 
   if (insert_fields(thd, &thd->lex->select_lex.context,
                     tables->db, tables->alias, &it, 0))
-    goto err0;
+    goto err;
 
   protocol->send_fields(&list, Protocol::SEND_NUM_ROWS | Protocol::SEND_EOF);
 

sql/sql_lex.cc

@@ -323,7 +323,6 @@ void lex_start(THD *thd)
   lex->length=0;
   lex->part_info= 0;
   lex->select_lex.in_sum_expr=0;
-  lex->select_lex.expr_list.empty();
   lex->select_lex.ftfunc_list_alloc.empty();
   lex->select_lex.ftfunc_list= &lex->select_lex.ftfunc_list_alloc;
   lex->select_lex.group_list.empty();
@@ -720,6 +719,7 @@ static inline uint int_token(const char *str,uint length)
 int MYSQLlex(void *arg, void *yythd)
 {
   reg1	uchar c;
+  bool comment_closed;
   int	tokval, result_state;
   uint length;
   enum my_lex_states state;
@@ -1212,7 +1212,10 @@ int MYSQLlex(void *arg, void *yythd)
         /*
           The special comment format is very strict:
           '/' '*' '!', followed by exactly
-          2 digits (major), then 3 digits (minor).
+          1 digit (major), 2 digits (minor), then 2 digits (dot).
+          32302 -> 3.23.02
+          50032 -> 5.0.32
+          50114 -> 5.1.14
         */
         char version_str[6];
         version_str[0]= lip->yyPeekn(0);
@@ -1231,7 +1234,7 @@ int MYSQLlex(void *arg, void *yythd)
           ulong version;
           version=strtol(version_str, NULL, 10);
 
-          /* Accept 'M' 'M' 'm' 'm' 'm' */
+          /* Accept 'M' 'm' 'm' 'd' 'd' */
           lip->yySkipn(5);
 
           if (version <= MYSQL_VERSION_ID)
@@ -1255,16 +1258,36 @@ int MYSQLlex(void *arg, void *yythd)
         lip->yySkip();                  // Accept /
         lip->yySkip();                  // Accept *
       }
-
-      while (! lip->eof() &&
-            ((c=lip->yyGet()) != '*' || lip->yyPeek() != '/'))
+      /*
+        Discard:
+        - regular '/' '*' comments,
+        - special comments '/' '*' '!' for a future version,
+        by scanning until we find a closing '*' '/' marker.
+        Note: There is no such thing as nesting comments,
+        the first '*' '/' sequence seen will mark the end.
+      */
+      comment_closed= FALSE;
+      while (! lip->eof())
       {
-        if (c == '\n')
+        c= lip->yyGet();
+        if (c == '*')
+        {
+          if (lip->yyPeek() == '/')
+          {
+            lip->yySkip();
+            comment_closed= TRUE;
+            state = MY_LEX_START;
+            break;
+          }
+        }
+        else if (c == '\n')
           lip->yylineno++;
       }
-      if (! lip->eof())
-        lip->yySkip();                  // remove last '/'
+      /* Unbalanced comments with a missing '*' '/' are a syntax error */
+      if (! comment_closed)
+        return (ABORT_SYM);
       state = MY_LEX_START;             // Try again
+      lip->in_comment= NO_COMMENT;
       lip->set_echo(TRUE);
       break;
     case MY_LEX_END_LONG_COMMENT:
@@ -1316,6 +1339,9 @@ int MYSQLlex(void *arg, void *yythd)
         lip->set_echo(FALSE);
         lip->yySkip();
         lip->set_echo(TRUE);
+        /* Unbalanced comments with a missing '*' '/' are a syntax error */
+        if (lip->in_comment != NO_COMMENT)
+          return (ABORT_SYM);
         lip->next_state=MY_LEX_END;     // Mark for next loop
         return(END_OF_INPUT);
       }
@@ -1556,7 +1582,6 @@ void st_select_lex::init_select()
   options= 0;
   sql_cache= SQL_CACHE_UNSPECIFIED;
   braces= 0;
-  expr_list.empty();
   interval_list.empty();
   ftfunc_list_alloc.empty();
   inner_sum_func_list= 0;

sql/sql_lex.h

@@ -596,7 +596,6 @@ public:
   const char *type;               /* type of select for EXPLAIN          */
 
   SQL_LIST order_list;                /* ORDER clause */
-  List<List_item>     expr_list;
   SQL_LIST *gorder_list;
   Item *select_limit, *offset_limit;  /* LIMIT clause parameters */
   // Arrays of pointers to top elements of all_fields list

sql/sql_parse.cc

@@ -3381,6 +3381,8 @@ end_with_restore_list:
   }
   case SQLCOM_REVOKE_ALL:
   {
+    if (end_active_trans(thd))
+      goto error;
     if (check_access(thd, UPDATE_ACL, "mysql", 0, 1, 1, 0) &&
         check_global_access(thd,CREATE_USER_ACL))
       break;
@@ -3392,6 +3394,9 @@ end_with_restore_list:
   case SQLCOM_REVOKE:
   case SQLCOM_GRANT:
   {
+    if (end_active_trans(thd))
+      goto error;
+
     if (check_access(thd, lex->grant | lex->grant_tot_col | GRANT_ACL,
 		     first_table ?  first_table->db : select_lex->db,
 		     first_table ? &first_table->grant.privilege : 0,