Merge quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/50

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/50


sql/item_func.h:
  Auto merged

client/mysqldump.c

@@ -1489,8 +1489,15 @@ static uint dump_routines_for_db(char *db)
             routine body of other routines that are not the creator of!
           */
           DBUG_PRINT("info",("length of body for %s row[2] '%s' is %d",
-                             routine_name, row[2], (int) strlen(row[2])));
-          if (strlen(row[2]))
+                             routine_name, row[2] ? row[2] : "(null)",
+                             row[2] ? (int) strlen(row[2]) : 0));
+          if (row[2] == NULL)
+          {
+            fprintf(sql_file, "\n-- insufficient privileges to %s\n", query_buff);
+            fprintf(sql_file, "-- does %s have permissions on mysql.proc?\n\n", current_user);
+            maybe_die(EX_MYSQLERR,"%s has insufficent privileges to %s!", current_user, query_buff);
+          }
+          else if (strlen(row[2]))
           {
             char *query_str= NULL;
             char *definer_begin;
@@ -1540,7 +1547,7 @@ static uint dump_routines_for_db(char *db)
             /*
               we need to change sql_mode only for the CREATE
               PROCEDURE/FUNCTION otherwise we may need to re-quote routine_name
-            */;
+            */
             fprintf(sql_file, "/*!50003 SET SESSION SQL_MODE=\"%s\"*/;;\n",
                     row[1] /* sql_mode */);
             fprintf(sql_file, "/*!50003 %s */;;\n",

extra/my_print_defaults.c

@@ -33,7 +33,20 @@ const char *default_dbug_option="d:t:o,/tmp/my_print_defaults.trace";
 
 static struct my_option my_long_options[] =
 {
-  {"config-file", 'c', "The config file to be used.",
+  /*
+    NB: --config-file is troublesome, because get_defaults_options() doesn't
+    know about it, but we pretend --config-file is like --defaults-file.  In
+    fact they behave differently: see the comments at the top of
+    mysys/default.c for how --defaults-file should behave.
+
+    This --config-file option behaves as:
+    - If it has a directory name part (absolute or relative), then only this
+      file is read; no error is given if the file doesn't exist
+    - If the file has no directory name part, the standard locations are
+      searched for a file of this name (and standard filename extensions are
+      added if the file has no extension)
+  */
+  {"config-file", 'c', "Deprecated, please use --defaults-file instead.  Name of config file to read; if no extension is given, default extension (e.g., .ini or .cnf) will be added",
    (gptr*) &config_file, (gptr*) &config_file, 0, GET_STR, REQUIRED_ARG,
    0, 0, 0, 0, 0, 0},
 #ifdef DBUG_OFF
@@ -43,11 +56,11 @@ static struct my_option my_long_options[] =
   {"debug", '#', "Output debug log", (gptr*) &default_dbug_option,
    (gptr*) &default_dbug_option, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
 #endif
-  {"defaults-file", 'c', "Synonym for --config-file.",
+  {"defaults-file", 'c', "Like --config-file, except: if first option, then read this file only, do not read global or per-user config files; should be the first option",
    (gptr*) &config_file, (gptr*) &config_file, 0, GET_STR, REQUIRED_ARG,
    0, 0, 0, 0, 0, 0},
   {"defaults-extra-file", 'e',
-   "Read this file after the global /etc config file and before the config file in the users home directory.",
+   "Read this file after the global config file and before the config file in the users home directory; should be the first option",
    (gptr*) &my_defaults_extra_file, (gptr*) &my_defaults_extra_file, 0,
    GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
   {"defaults-group-suffix", 'g',
@@ -55,7 +68,7 @@ static struct my_option my_long_options[] =
    (gptr*) &my_defaults_group_suffix, (gptr*) &my_defaults_group_suffix,
    0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
   {"extra-file", 'e',
-   "Synonym for --defaults-extra-file.",
+   "Deprecated. Synonym for --defaults-extra-file.",
    (gptr*) &my_defaults_extra_file,
    (gptr*) &my_defaults_extra_file, 0, GET_STR,
    REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
@@ -86,7 +99,7 @@ static void usage(my_bool version)
   my_print_help(my_long_options);
   my_print_default_files(config_file);
   my_print_variables(my_long_options);
-  printf("\nExample usage:\n%s --config-file=my client mysql\n", my_progname);
+  printf("\nExample usage:\n%s --defaults-file=example.cnf client mysql\n", my_progname);
 }
 
 #include <help_end.h>

include/my_global.h

@@ -784,13 +784,20 @@ typedef SOCKET_SIZE_TYPE size_socket;
 #define SSIZE_MAX ((~((size_t) 0)) / 2)
 #endif
 
+#ifndef HAVE_FINITE
+#define finite(x) (1.0 / fabs(x) > 0.0)
+#endif
+
+#ifndef HAVE_ISNAN
+#define isnan(x) ((x) != (x))
+#endif
+
 #if !defined(HAVE_ISINF)
 /* The configure check for "isinf with math.h" has failed */
 #ifdef isinf
 #undef isinf
 #endif
-/* Define isinf to never say that X is infinite */
-#define isinf(X)    0
+#define isinf(X) (!finite(X) && !isnan(X))
 #endif
 
 /* Define missing math constants. */

mysql-test/include/have_lowercase1.inc

+--require r/lowercase1.require
+--disable_query_log
+show variables like 'lower_case_table_names';
+--enable_query_log

mysql-test/lib/mtr_report.pl

@@ -238,7 +238,7 @@ sub mtr_report_stats ($) {
   }
   if (!$::opt_extern)
   {
-    print "The servers where restarted $tot_restarts times\n";
+    print "The servers were restarted $tot_restarts times\n";
   }
 
   if ( $::opt_timer )
@@ -357,7 +357,7 @@ sub mtr_report_stats ($) {
 
   if ( $tot_failed != 0 || $found_problems)
   {
-    mtr_error("there where failing test cases");
+    mtr_error("there were failing test cases");
   }
 }
 

mysql-test/r/alter_table.result

@@ -860,3 +860,27 @@ ALTER TABLE t1 ADD d INT;
 ALTER TABLE t1 ADD KEY (d(20));
 ERROR HY000: Incorrect sub part key; the used key part isn't a string, the used length is longer than the key part, or the storage engine doesn't support unique sub keys
 DROP TABLE t1;
+create table t1(id int(8) primary key auto_increment) engine=heap;
+insert into t1 values (null);
+insert into t1 values (null);
+select * from t1;
+id
+1
+2
+alter table t1 auto_increment = 50;
+alter table t1 engine = myisam;
+insert into t1 values (null);
+select * from t1;
+id
+1
+2
+50
+alter table t1 engine = heap;
+insert into t1 values (null);
+select * from t1;
+id
+1
+2
+50
+51
+drop table t1;

mysql-test/r/func_math.result

@@ -143,9 +143,6 @@ select format(col2,6) from t1 where col1=7;
 format(col2,6)
 1,234,567,890,123,456.123450
 drop table t1;
-select round(150, 2);
-round(150, 2)
-150.00
 select ceil(0.09);
 ceil(0.09)
 1
@@ -156,11 +153,11 @@ create table t1 select round(1, 6);
 show create table t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `round(1, 6)` decimal(7,6) NOT NULL default '0.000000'
+  `round(1, 6)` int(1) NOT NULL default '0'
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 select * from t1;
 round(1, 6)
-1.000000
+1
 drop table t1;
 select abs(-2) * -2;
 abs(-2) * -2
@@ -238,3 +235,91 @@ format(t2.f2-t2.f1+1,0)
 10,000
 drop table t1, t2;
 set names default;
+select cast(-2 as unsigned), 18446744073709551614, -2;
+cast(-2 as unsigned)	18446744073709551614	-2
+18446744073709551614	18446744073709551614	-2
+select abs(cast(-2 as unsigned)), abs(18446744073709551614), abs(-2);
+abs(cast(-2 as unsigned))	abs(18446744073709551614)	abs(-2)
+18446744073709551614	18446744073709551614	2
+select ceiling(cast(-2 as unsigned)), ceiling(18446744073709551614), ceiling(-2);
+ceiling(cast(-2 as unsigned))	ceiling(18446744073709551614)	ceiling(-2)
+18446744073709551614	18446744073709551614	-2
+select floor(cast(-2 as unsigned)), floor(18446744073709551614), floor(-2);
+floor(cast(-2 as unsigned))	floor(18446744073709551614)	floor(-2)
+18446744073709551614	18446744073709551614	-2
+select format(cast(-2 as unsigned), 2), format(18446744073709551614, 2), format(-2, 2);
+format(cast(-2 as unsigned), 2)	format(18446744073709551614, 2)	format(-2, 2)
+18,446,744,073,709,551,614.00	18,446,744,073,709,551,614.00	-2.00
+select sqrt(cast(-2 as unsigned)), sqrt(18446744073709551614), sqrt(-2);
+sqrt(cast(-2 as unsigned))	sqrt(18446744073709551614)	sqrt(-2)
+4294967296	4294967296	NULL
+select round(cast(-2 as unsigned), 1), round(18446744073709551614, 1), round(-2, 1);
+round(cast(-2 as unsigned), 1)	round(18446744073709551614, 1)	round(-2, 1)
+18446744073709551614	18446744073709551614	-2
+select round(4, cast(-2 as unsigned)), round(4, 18446744073709551614), round(4, -2);
+round(4, cast(-2 as unsigned))	round(4, 18446744073709551614)	round(4, -2)
+4	4	0
+select truncate(cast(-2 as unsigned), 1), truncate(18446744073709551614, 1), truncate(-2, 1);
+truncate(cast(-2 as unsigned), 1)	truncate(18446744073709551614, 1)	truncate(-2, 1)
+18446744073709551614	18446744073709551614	-2
+select truncate(4, cast(-2 as unsigned)), truncate(4, 18446744073709551614), truncate(4, -2);
+truncate(4, cast(-2 as unsigned))	truncate(4, 18446744073709551614)	truncate(4, -2)
+4	4	0
+select round(10000000000000000000, -19), truncate(10000000000000000000, -19);
+round(10000000000000000000, -19)	truncate(10000000000000000000, -19)
+10000000000000000000	10000000000000000000
+select round(1e0, -309), truncate(1e0, -309);
+round(1e0, -309)	truncate(1e0, -309)
+0	0
+select round(1e1,308), truncate(1e1, 308);
+round(1e1,308)	truncate(1e1, 308)
+10	10
+select round(1e1, 2147483648), truncate(1e1, 2147483648);
+round(1e1, 2147483648)	truncate(1e1, 2147483648)
+10	10
+select round(1.1e1, 4294967295), truncate(1.1e1, 4294967295);
+round(1.1e1, 4294967295)	truncate(1.1e1, 4294967295)
+11	11
+select round(1.12e1, 4294967296), truncate(1.12e1, 4294967296);
+round(1.12e1, 4294967296)	truncate(1.12e1, 4294967296)
+11.2	11.2
+select round(1.5, 2147483640), truncate(1.5, 2147483640);
+round(1.5, 2147483640)	truncate(1.5, 2147483640)
+1.500000000000000000000000000000	1.500000000000000000000000000000
+select round(1.5, -2147483649), round(1.5, 2147483648);
+round(1.5, -2147483649)	round(1.5, 2147483648)
+0	1.500000000000000000000000000000
+select truncate(1.5, -2147483649), truncate(1.5, 2147483648);
+truncate(1.5, -2147483649)	truncate(1.5, 2147483648)
+0	1.500000000000000000000000000000
+select round(1.5, -4294967296), round(1.5, 4294967296);
+round(1.5, -4294967296)	round(1.5, 4294967296)
+0	1.500000000000000000000000000000
+select truncate(1.5, -4294967296), truncate(1.5, 4294967296);
+truncate(1.5, -4294967296)	truncate(1.5, 4294967296)
+0	1.500000000000000000000000000000
+select round(1.5, -9223372036854775808), round(1.5, 9223372036854775808);
+round(1.5, -9223372036854775808)	round(1.5, 9223372036854775808)
+0	1.500000000000000000000000000000
+select truncate(1.5, -9223372036854775808), truncate(1.5, 9223372036854775808);
+truncate(1.5, -9223372036854775808)	truncate(1.5, 9223372036854775808)
+0	1.500000000000000000000000000000
+select round(1.5, 18446744073709551615), truncate(1.5, 18446744073709551615);
+round(1.5, 18446744073709551615)	truncate(1.5, 18446744073709551615)
+1.500000000000000000000000000000	1.500000000000000000000000000000
+select round(18446744073709551614, -1), truncate(18446744073709551614, -1);
+round(18446744073709551614, -1)	truncate(18446744073709551614, -1)
+18446744073709551610	18446744073709551610
+select round(4, -4294967200), truncate(4, -4294967200);
+round(4, -4294967200)	truncate(4, -4294967200)
+0	0
+select mod(cast(-2 as unsigned), 3), mod(18446744073709551614, 3), mod(-2, 3);
+mod(cast(-2 as unsigned), 3)	mod(18446744073709551614, 3)	mod(-2, 3)
+2	2	-2
+select mod(5, cast(-2 as unsigned)), mod(5, 18446744073709551614), mod(5, -2);
+mod(5, cast(-2 as unsigned))	mod(5, 18446744073709551614)	mod(5, -2)
+5	5	1
+select pow(cast(-2 as unsigned), 5), pow(18446744073709551614, 5), pow(-2, 5);
+pow(cast(-2 as unsigned), 5)	pow(18446744073709551614, 5)	pow(-2, 5)
+2.1359870359209e+96	2.1359870359209e+96	-32
+End of 5.0 tests

mysql-test/r/lowercase1.require

+Variable_name	Value
+lower_case_table_names	1

mysql-test/r/lowercase_mixed_tmpdir.result

+drop table if exists t1;
+create table t1 (id int) engine=myisam;
+insert into t1 values (1);
+create temporary table t2 select * from t1;
+drop temporary table t2;
+drop table t1;

mysql-test/r/mysqldump.result

@@ -3283,5 +3283,32 @@ drop database bug23491_original;
 drop database bug23491_restore;
 use test;
 # 
+# Bug 27293: mysqldump crashes when dumping routines
+# defined by a different user
+#
+# Bug #22761: mysqldump reports no errors when using
+# --routines without mysql.proc privileges
+#
+create database mysqldump_test_db;
+grant all privileges on mysqldump_test_db.*  to user1;
+grant all privileges on mysqldump_test_db.*  to user2;
+create procedure mysqldump_test_db.sp1() select 'hello';
+DELIMITER ;;
+
+-- insufficient privileges to SHOW CREATE PROCEDURE `sp1`
+-- does user2 have permissions on mysql.proc?
+
+DELIMITER ;
+DELIMITER ;;
+/*!50003 SET SESSION SQL_MODE=""*/;;
+/*!50003 CREATE*/ /*!50020 DEFINER=`user1`@`%`*/ /*!50003 PROCEDURE `sp1`()
+select 'hello' */;;
+/*!50003 SET SESSION SQL_MODE=@OLD_SQL_MODE*/;;
+DELIMITER ;
+drop procedure sp1;
+drop user user1;
+drop user user2;
+drop database mysqldump_test_db;
+#
 # End of 5.0 tests
 #

mysql-test/r/type_newdecimal.result

@@ -763,7 +763,7 @@ truncate(99999999999999999999999999999999999999,31)
 99999999999999999999999999999999999999.000000000000000000000000000000
 select truncate(99.999999999999999999999999999999999999,31);
 truncate(99.999999999999999999999999999999999999,31)
-100.000000000000000000000000000000
+99.999999999999999999999999999999
 select truncate(99999999999999999999999999999999999999,-31);
 truncate(99999999999999999999999999999999999999,-31)
 99999990000000000000000000000000000000

mysql-test/r/update.result

@@ -457,3 +457,38 @@ a	quux
 2	0.100000000000000000000000000000
 3	NULL
 DROP TABLE t1;
+set tmp_table_size=1024;
+create table t1 (id int, a int, key idx(a));
+create table t2 (id int unsigned not null auto_increment primary key, a int);
+insert into t2(a) values(1),(2),(3),(4),(5),(6),(7),(8);
+insert into t2(a) select a from t2;
+insert into t2(a) select a from t2;
+insert into t2(a) select a from t2;
+update t2 set a=id;
+insert into t1 select * from t2;
+select count(*) from t1 join t2 on (t1.a=t2.a);
+count(*)
+64
+update t1 join t2 on (t1.a=t2.a) set t1.id=t2.id;
+affected rows: 0
+info: Rows matched: 64  Changed: 0  Warnings: 0
+insert into t2(a) select a from t2;
+update t2 set a=id;
+truncate t1;
+insert into t1 select * from t2;
+select count(*) from t1 join t2 on (t1.a=t2.a);
+count(*)
+128
+update t1 join t2 on (t1.a=t2.a) set t1.id=t2.id;
+affected rows: 0
+info: Rows matched: 128  Changed: 0  Warnings: 0
+update t1 set a=1;
+update t2 set a=1;
+select count(*) from t1 join t2 on (t1.a=t2.a);
+count(*)
+16384
+update t1 join t2 on (t1.a=t2.a) set t1.id=t2.id;
+affected rows: 127
+info: Rows matched: 128  Changed: 127  Warnings: 0
+drop table t1,t2;
+End of 5.0 tests

mysql-test/t/alter_table.test

@@ -636,3 +636,29 @@ ALTER TABLE t1 ADD d INT;
 ALTER TABLE t1 ADD KEY (d(20));
 
 DROP TABLE t1;
+# Bug#25262 Auto Increment lost when changing Engine type
+#
+
+create table t1(id int(8) primary key auto_increment) engine=heap;
+
+insert into t1 values (null);
+insert into t1 values (null);
+
+select * from t1;
+
+# Set auto increment to 50
+alter table t1 auto_increment = 50;
+
+# Alter to myisam
+alter table t1 engine = myisam;
+
+# This insert should get id 50
+insert into t1 values (null);
+select * from t1;
+
+# Alter to heap again
+alter table t1 engine = heap;
+insert into t1 values (null);
+select * from t1;
+
+drop table t1;

mysql-test/t/func_math.test

@@ -82,11 +82,6 @@ select format(col2,6) from t1 where col1=7;
 drop table t1;
 
 
-#
-# Bug #10083 (round doesn't increase decimals)
-#
-select round(150, 2);
-
 #
 # Bug @10632 (Ceiling function returns wrong answer)
 #
@@ -177,3 +172,37 @@ select format(t2.f2-t2.f1+1,0) from t1,t2
 where t1.f2 = t2.f3 order by t1.f1;
 drop table t1, t2;
 set names default;
+
+# Bug 24912 -- misc functions have trouble with unsigned
+
+select cast(-2 as unsigned), 18446744073709551614, -2;
+select abs(cast(-2 as unsigned)), abs(18446744073709551614), abs(-2);
+select ceiling(cast(-2 as unsigned)), ceiling(18446744073709551614), ceiling(-2);
+select floor(cast(-2 as unsigned)), floor(18446744073709551614), floor(-2);
+select format(cast(-2 as unsigned), 2), format(18446744073709551614, 2), format(-2, 2);
+select sqrt(cast(-2 as unsigned)), sqrt(18446744073709551614), sqrt(-2);
+select round(cast(-2 as unsigned), 1), round(18446744073709551614, 1), round(-2, 1);
+select round(4, cast(-2 as unsigned)), round(4, 18446744073709551614), round(4, -2);
+select truncate(cast(-2 as unsigned), 1), truncate(18446744073709551614, 1), truncate(-2, 1);
+select truncate(4, cast(-2 as unsigned)), truncate(4, 18446744073709551614), truncate(4, -2);
+select round(10000000000000000000, -19), truncate(10000000000000000000, -19);
+select round(1e0, -309), truncate(1e0, -309);
+select round(1e1,308), truncate(1e1, 308);
+select round(1e1, 2147483648), truncate(1e1, 2147483648);
+select round(1.1e1, 4294967295), truncate(1.1e1, 4294967295);
+select round(1.12e1, 4294967296), truncate(1.12e1, 4294967296);
+select round(1.5, 2147483640), truncate(1.5, 2147483640);
+select round(1.5, -2147483649), round(1.5, 2147483648);
+select truncate(1.5, -2147483649), truncate(1.5, 2147483648);
+select round(1.5, -4294967296), round(1.5, 4294967296);
+select truncate(1.5, -4294967296), truncate(1.5, 4294967296);
+select round(1.5, -9223372036854775808), round(1.5, 9223372036854775808);
+select truncate(1.5, -9223372036854775808), truncate(1.5, 9223372036854775808);
+select round(1.5, 18446744073709551615), truncate(1.5, 18446744073709551615);
+select round(18446744073709551614, -1), truncate(18446744073709551614, -1);
+select round(4, -4294967200), truncate(4, -4294967200);
+select mod(cast(-2 as unsigned), 3), mod(18446744073709551614, 3), mod(-2, 3);
+select mod(5, cast(-2 as unsigned)), mod(5, 18446744073709551614), mod(5, -2);
+select pow(cast(-2 as unsigned), 5), pow(18446744073709551614, 5), pow(-2, 5);
+
+--echo End of 5.0 tests

mysql-test/t/lowercase_mixed_tmpdir-master.opt

+--lower-case-table-names=1
+--tmpdir=$MYSQLTEST_VARDIR/tmp/MixedCase

mysql-test/t/lowercase_mixed_tmpdir-master.sh

+# This test requires a non-lowercase tmpdir directory on a case-sensitive
+# filesystem.
+
+d="$MYSQLTEST_VARDIR/tmp/MixedCase"
+test -d "$d" || mkdir "$d"
+rm -f "$d"/*

mysql-test/t/lowercase_mixed_tmpdir.test

+--source include/have_case_sensitive_file_system.inc
+--source include/have_lowercase1.inc
+
+--disable_warnings
+drop table if exists t1;
+--enable_warnings
+
+create table t1 (id int) engine=myisam;
+insert into t1 values (1);
+create temporary table t2 select * from t1;
+drop temporary table t2;
+drop table t1;

mysql-test/t/mysqldump.test

@@ -1495,6 +1495,41 @@ drop database bug23491_original;
 drop database bug23491_restore;
 use test;
 
+
+
+--echo # 
+--echo # Bug 27293: mysqldump crashes when dumping routines
+--echo # defined by a different user
+--echo #
+--echo # Bug #22761: mysqldump reports no errors when using
+--echo # --routines without mysql.proc privileges
+--echo #
+
+create database mysqldump_test_db;
+
+grant all privileges on mysqldump_test_db.*  to user1;
+grant all privileges on mysqldump_test_db.*  to user2;
+
+connect (user27293,localhost,user1,,mysqldump_test_db,$MASTER_MYPORT,$MASTER_MYSOCK);
+connection user27293;
+
+create procedure mysqldump_test_db.sp1() select 'hello';
+
+--error 2
+--exec $MYSQL_DUMP -f --compact --user=user2 --password=  -h 127.0.0.1 -P $MASTER_MYPORT --routines mysqldump_test_db
+
+--exec $MYSQL_DUMP -f --compact --user=user1 --password=  -h 127.0.0.1 -P $MASTER_MYPORT --routines mysqldump_test_db
+
+drop procedure sp1;
+
+connection default;
+drop user user1;
+drop user user2;
+
+drop database mysqldump_test_db;
+
+
+
 --echo #
 --echo # End of 5.0 tests
 --echo #

mysql-test/t/update.test

@@ -376,3 +376,58 @@ INSERT INTO t1( a )
 SELECT * FROM t1;
 
 DROP TABLE t1;
+
+#
+# Bug #22364: Inconsistent "matched rows" when executing UPDATE
+#
+
+connect (con1,localhost,root,,test);
+connection con1;
+
+set tmp_table_size=1024;
+
+# Create the test tables
+create table t1 (id int, a int, key idx(a));
+create table t2 (id int unsigned not null auto_increment primary key, a int);
+insert into t2(a) values(1),(2),(3),(4),(5),(6),(7),(8);
+insert into t2(a) select a from t2; 
+insert into t2(a) select a from t2;
+insert into t2(a) select a from t2; 
+update t2 set a=id;
+insert into t1 select * from t2;
+
+# Check that the number of matched rows is correct when the temporary
+# table is small enough to not be converted to MyISAM
+select count(*) from t1 join t2 on (t1.a=t2.a);
+--enable_info
+update t1 join t2 on (t1.a=t2.a) set t1.id=t2.id;
+--disable_info
+
+# Increase table sizes
+insert into t2(a) select a from t2; 
+update t2 set a=id; 
+truncate t1; 
+insert into t1 select * from t2; 
+
+# Check that the number of matched rows is correct when the temporary
+# table has to be converted to MyISAM
+select count(*) from t1 join t2 on (t1.a=t2.a);
+--enable_info
+update t1 join t2 on (t1.a=t2.a) set t1.id=t2.id;
+--disable_info
+
+# Check that the number of matched rows is correct when there are duplicate
+# key errors
+update t1 set a=1;
+update t2 set a=1;
+select count(*) from t1 join t2 on (t1.a=t2.a);
+--enable_info
+update t1 join t2 on (t1.a=t2.a) set t1.id=t2.id;
+--disable_info
+
+drop table t1,t2;
+
+connection default;
+disconnect con1;
+
+--echo End of 5.0 tests

mysys/default.c

@@ -877,8 +877,8 @@ void my_print_default_files(const char *conf_file)
 	fputs(name,stdout);
       }
     }
-    puts("");
   }
+  puts("");
 }
 
 void print_defaults(const char *conf_file, const char **groups)

mysys/my_copy.c

@@ -111,6 +111,11 @@ int my_copy(const char *from, const char *to, myf MyFlags)
 
 err:
   if (from_file >= 0) VOID(my_close(from_file,MyFlags));
-  if (to_file >= 0)   VOID(my_close(to_file,MyFlags));
+  if (to_file >= 0)
+  {
+    VOID(my_close(to_file, MyFlags));
+    /* attempt to delete the to-file we've partially written */
+    VOID(my_delete(to, MyFlags));
+  }
   DBUG_RETURN(-1);
 } /* my_copy */

scripts/mysql_install_db.sh

@@ -79,7 +79,10 @@ parse_arguments() {
         then
           # This sed command makes sure that any special chars are quoted,
           # so the arg gets passed exactly to the server.
-          args="$args "`echo "$arg" | sed -e 's,\([^a-zA-Z0-9_.-]\),\\\\\1,g'`
+          # XXX: This is broken; true fix requires using eval and proper
+          # quoting of every single arg ($basedir, $ldata, etc.)
+          #args="$args "`echo "$arg" | sed -e 's,\([^a-zA-Z0-9_.-]\),\\\\\1,g'`
+          args="$args $arg"
         fi
         ;;
     esac
@@ -151,6 +154,7 @@ else
     if test -f $i/$fill_help_tables
     then
       pkgdatadir=$i
+      break
     fi
   done
 

scripts/mysqld_multi.sh

@@ -4,9 +4,10 @@ use Getopt::Long;
 use POSIX qw(strftime);
 
 $|=1;
-$VER="2.15";
+$VER="2.16";
+
+my @defaults_options;   #  Leading --no-defaults, --defaults-file, etc.
 
-$opt_config_file   = undef();
 $opt_example       = 0;
 $opt_help          = 0;
 $opt_log           = undef();
@@ -49,54 +50,52 @@ sub main
     print "MySQL distribution.\n";
     $my_print_defaults_exists= 0;
   }
-  if ($my_print_defaults_exists)
+
+  # Remove leading defaults options from @ARGV
+  while (@ARGV > 0)
   {
+    last unless $ARGV[0] =~
+      /^--(?:no-defaults$|(?:defaults-file|defaults-extra-file)=)/;
+    push @defaults_options, (shift @ARGV);
+  }
+
+  # Handle deprecated --config-file option: convert to --defaults-extra-file
   foreach my $arg (@ARGV)
   {
     if ($arg =~ m/^--config-file=(.*)/)
     {
-	if (!length($1))
-	{
-	  die "Option config-file requires an argument\n";
+      # Put it at the beginning of the list, so it has lower precedence
+      # than a correct --defaults-extra-file option
+
+      unshift @defaults_options, "--defaults-extra-file=$1";
     }
-	elsif (!( -e $1 && -r $1))
-	{
-	  die "Option file '$1' doesn't exists, or is not readable\n";
   }
-	else
-	{
-	  $opt_config_file= $1;
-	  if (!($opt_config_file =~ m/\//))
+
+  foreach (@defaults_options)
   {
-	    # No path. Use current working directory
-	    $opt_config_file= "./" . $opt_config_file;
-	  }
-	}
+    $_ = quote_shell_word($_);
   }
-    }
-    my $com= "my_print_defaults ";
-    $com.= "--config-file=$opt_config_file " if (defined($opt_config_file));
-    $com.= "mysqld_multi";
-    my @defops = `$com`;
-    chop @defops;
-    splice @ARGV, 0, 0, @defops;
-  }
-  if (!GetOptions("help","example","version","mysqld=s","mysqladmin=s",
-		  "config-file=s","user=s","password=s","log=s","no-log",
-		  "tcp-ip", "silent","verbose"))
+
+  # Add [mysqld_multi] options to front of @ARGV, ready for GetOptions()
+  unshift @ARGV, defaults_for_group('mysqld_multi');
+
+  # The --config-file option can be ignored; if passed on the command
+  # line, it's already handled; if specified in the configuration file,
+  # it's redundant and not useful
+  @ARGV= grep { not /^--config-file=/ } @ARGV;
+
+  # We've already handled --no-defaults, --defaults-file, etc.
+  if (!GetOptions("help", "example", "version", "mysqld=s", "mysqladmin=s",
+                  "user=s", "password=s", "log=s", "no-log",
+                  "tcp-ip",  "silent", "verbose"))
   {
     $flag_exit= 1;
   }
-  if (defined($opt_config_file) && !($opt_config_file =~ m/\//))
-  {
-    # No path. Use current working directory
-    $opt_config_file= "./" . $opt_config_file;
-  }
   usage() if ($opt_help);
 
   if ($opt_verbose && $opt_silent)
   {
-    print "Both --verbose and --silent has been given. Some of the warnings ";
+    print "Both --verbose and --silent have been given. Some of the warnings ";
     print "will be disabled\nand some will be enabled.\n\n";
   }
 
@@ -168,53 +167,44 @@ sub main
   }
 }
 
-####
-#### Quote option argument. Add double quotes around the argument
-#### and escape the following: $, \, "
-#### This function is needed, because my_print_defaults drops possible
-#### quotes, single or double, from in front of an argument and from
-#### the end.
-####
+#
+# Quote word for shell
+#
 
-sub quote_opt_arg
+sub quote_shell_word
 {
   my ($option)= @_;
 
-  if ($option =~ m/(\-\-[a-zA-Z0-9\_\-]+)=(.*)/)
-  {
-    $option= $1;
-    $arg= $2;
-    $arg=~ s/\\/\\\\/g; # Escape escape character first to avoid doubling.
-    $arg=~ s/\$/\\\$/g;
-    $arg=~ s/\"/\\\"/g;
-    $arg= "\"" . $arg . "\"";
-    $option= $option . "=" . $arg;
-  }
+  $option =~ s!([^\w=./-])!\\$1!g;
   return $option;
 }
 
+sub defaults_for_group
+{
+  my ($group) = @_;
+
+  return () unless $my_print_defaults_exists;
+
+  my $com= join ' ', 'my_print_defaults', @defaults_options, $group;
+  my @defaults = `$com`;
+  chomp @defaults;
+  return @defaults;
+}
+
 ####
 #### Init log file. Check for appropriate place for log file, in the following
-#### order my_print_defaults mysqld datadir, @datadir@, /var/log, /tmp
+#### order:  my_print_defaults mysqld datadir, @datadir@
 ####
 
 sub init_log
 {
-  if ($my_print_defaults_exists)
-  {
-    @mysqld_opts= `my_print_defaults mysqld`;
-    chomp @mysqld_opts;
-    foreach my $opt (@mysqld_opts)
-    {
-      if ($opt =~ m/^\-\-datadir[=](.*)/)
+  foreach my $opt (defaults_for_group('mysqld'))
   {
-        if (-d "$1" && -w "$1")
+    if ($opt =~ m/^--datadir=(.*)/ && -d "$1" && -w "$1")
     {
       $logdir= $1;
     }
   }
-    }
-  }
   if (!defined($logdir))
   {
     $logdir= "@datadir@" if (-d "@datadir@" && -w "@datadir@");
@@ -303,11 +293,7 @@ sub start_mysqlds()
   @groups = &find_groups($groupids);
   for ($i = 0; defined($groups[$i]); $i++)
   {
-    $com = "my_print_defaults";
-    $com.= defined($opt_config_file) ? " --config-file=$opt_config_file" : "";
-    $com.= " $groups[$i]";
-    @options = `$com`;
-    chop @options;
+    @options = defaults_for_group($groups[$i]);
 
     $mysqld_found= 1; # The default
     $mysqld_found= 0 if (!length($mysqld));
@@ -326,7 +312,7 @@ sub start_mysqlds()
       }
       else
       {
-	$options[$j]= quote_opt_arg($options[$j]);
+	$options[$j]= quote_shell_word($options[$j]);
 	$tmp.= " $options[$j]";
       }
     }
@@ -401,11 +387,7 @@ sub get_mysqladmin_options
   my ($i, @groups)= @_;
   my ($mysqladmin_found, $com, $tmp, $j);
 
-  $com = "my_print_defaults";
-  $com.= defined($opt_config_file) ? " --config-file=$opt_config_file" : "";
-  $com.= " $groups[$i]";
-  @options = `$com`;
-  chop @options;
+  @options = defaults_for_group($groups[$i]);
 
   $mysqladmin_found= 1; # The default
   $mysqladmin_found= 0 if (!length($mysqladmin));
@@ -445,129 +427,81 @@ sub get_mysqladmin_options
   return $com;
 }
 
-####
-#### Find groups. Takes the valid group numbers as an argument, parses
-#### them, puts them in the ascending order, removes duplicates and
-#### returns the wanted groups accordingly.
-####
+# Return a list of option files which can be opened.  Similar, but not
+# identical, to behavior of my_search_option_files()
+sub list_defaults_files
+{
+  my %opt;
+  foreach (@defaults_options)
+  {
+    return () if /^--no-defaults$/;
+    $opt{$1} = $2 if /^--defaults-(extra-file|file)=(.*)$/;
+  }
+
+  return ($opt{file}) if exists $opt{file};
 
+  my %seen;  # Don't list the same file more than once
+  return grep { defined $_ and not $seen{$_}++ and -f $_ and -r $_ }
+              ('/etc/my.cnf',
+               '/etc/mysql/my.cnf',
+               '@sysconfdir@/my.cnf',
+               ($ENV{MYSQL_HOME} ? "$ENV{MYSQL_HOME}/my.cnf" : undef),
+               $opt{'extra-file'},
+               ($ENV{HOME} ? "$ENV{HOME}/.my.cnf" : undef));
+}
+
+
+# Takes a specification of GNRs (see --help), and returns a list of matching
+# groups which actually are mentioned in a relevant config file
 sub find_groups
 {
   my ($raw_gids) = @_;
-  my (@groups, @data, @tmp, $line, $i, $k, @pre_gids, @gids, @tmp2,
-      $prev_value);
 
-  # Read the lines from the config file to variable 'data'
-  if (defined($opt_config_file))
-  {
-    open(MY_CNF, "<$opt_config_file") && (@data=<MY_CNF>) && close(MY_CNF);
-  }
-  else
-  {
-    if (-f "@sysconfdir@/my.cnf" && -r "@sysconfdir@/my.cnf")
-    {
-      open(MY_CNF, "<@sysconfdir@/my.cnf") && (@tmp=<MY_CNF>) && close(MY_CNF);
-    } elsif (-f "/etc/my.cnf" && -r "/etc/my.cnf")
-    {
-      open(MY_CNF, "</etc/my.cnf") && (@tmp=<MY_CNF>) && close(MY_CNF);
-    }
-    for ($i = 0; ($line = shift @tmp); $i++)
-    {
-      $data[$i] = $line;
-    }
-    if (-f "/etc/mysql/my.cnf" && -r "/etc/mysql/my.cnf")
-    {
-      open(MY_CNF, "</etc/mysql/my.cnf") && (@tmp=<MY_CNF>) && close(MY_CNF);
-    }
-    for (; ($line = shift @tmp); $i++)
-    {
-      $data[$i] = $line;
-    }
-    if (defined($ENV{MYSQL_HOME}) && -f "$ENV{MYSQL_HOME}/my.cnf" &&
-	-r "$ENV{MYSQL_HOME}/my.cnf")
-    {
-      open(MY_CNF, "<$ENV{MYSQL_HOME}/my.cnf") && (@tmp=<MY_CNF>) &&
-      close(MY_CNF);
-    }
-    for (; ($line = shift @tmp); $i++)
-    {
-      $data[$i] = $line;
-    }
-    if (-f "$homedir/.my.cnf" && -r "$homedir/.my.cnf")
-    {
-      open(MY_CNF, "<$homedir/.my.cnf") && (@tmp=<MY_CNF>) && close(MY_CNF);
-    }
-    for (; ($line = shift @tmp); $i++)
-    {
-      $data[$i] = $line;
-    }
-  }
-  chomp @data;
-  # Make a list of the wanted group ids
-  if (defined($raw_gids))
-  {
-    @pre_gids = split(',', $raw_gids);
-  }
+  my %gids;
+  my @groups;
+
   if (defined($raw_gids))
   {
-    for ($i = 0, $j = 0; defined($pre_gids[$i]); $i++)
+    # Make a hash of the wanted group ids
+    foreach my $raw_gid (split ',', $raw_gids)
     {
-      if ($pre_gids[$i] =~ m/^(\d+)$/)
+      # Match 123 or 123-456
+      my ($start, $end) = ($raw_gid =~ /^\s*(\d+)(?:\s*-\s*(\d+))?\s*$/);
+      $end = $start if not defined $end;
+      if (not defined $start or $end < $start or $start < 0)
       {
-	$gids[$j] = $1;
-	$j++;
-      }
-      elsif ($pre_gids[$i] =~ m/^(\d+)(\-)(\d+)$/)
-      {
-	for ($k = $1; $k <= $3; $k++)
-	{
-	  $gids[$j] = $k;
-	  $j++;
-	}
-      }
-      else
-      {
-	print "ABORT: Bad GNR: $pre_gids[$i] See $my_progname --help\n";
+        print "ABORT: Bad GNR: $raw_gid; see $my_progname --help\n";
         exit(1);
       }
-    }
-  }
-  # Sort the list of gids numerically in ascending order
-  @gids = sort {$a <=> $b} @gids;
-  # Remove non-positive integers and duplicates
-  for ($i = 0, $j = 0; defined($gids[$i]); $i++)
-  {
-    next if ($gids[$i] <= 0);
-    if (!$i || $prev_value != $gids[$i])
+
+      foreach my $i ($start .. $end)
       {
-      $tmp2[$j] = $gids[$i];
-      $j++;
+        # Use $i + 0 to normalize numbers (002 + 0 -> 2)
+        $gids{$i + 0}= 1;
       }
-    $prev_value = $gids[$i];
     }
-  @gids = @tmp2;
-  # Find and return the wanted groups
-  for ($i = 0, $j = 0; defined($data[$i]); $i++)
-  {
-    if ($data[$i] =~ m/^(\s*\[\s*)(mysqld)(\d+)(\s*\]\s*)$/)
+  }
+
+  my @defaults_files = list_defaults_files();
+  #warn "@{[sort keys %gids]} -> @defaults_files\n";
+  foreach my $file (@defaults_files)
   {
-      if (defined($raw_gids))
+    next unless open CONF, "< $file";
+
+    while (<CONF>)
     {
-	for ($k = 0; defined($gids[$k]); $k++)
+      if (/^\s*\[\s*(mysqld)(\d+)\s*\]\s*$/)
       {
-	  if ($gids[$k] == $3)
+        #warn "Found a group: $1$2\n";
+        # Use $2 + 0 to normalize numbers (002 + 0 -> 2)
+        if (not defined($raw_gids) or $gids{$2 + 0})
         {
-	    $groups[$j] = $2 . $3;
-	    $j++;
+          push @groups, "$1$2";
         }
       }
     }
-      else
-      {
-	$groups[$j] = $2 . $3;
-	$j++;
-      }
-    }
+
+    close CONF;
   }
   return @groups;
 }
@@ -806,8 +740,16 @@ groups found will either be started, stopped, or reported. Note that
 syntax for specifying GNRs must appear without spaces.
 
 Options:
---config-file=...  Alternative config file.
-                   Using: $opt_config_file
+
+These options must be given before any others:
+--no-defaults      Do not read any defaults file
+--defaults-file=...  Read only this configuration file, do not read the
+                   standard system-wide and user-specific files
+--defaults-extra-file=...  Read this configuration file in addition to the
+                   standard system-wide and user-specific files
+Using:  @{[join ' ', @defaults_options]}
+
+--config-file=...  Deprecated, please use --defaults-extra-file instead
 --example          Give an example of a config file with extra information.
 --help             Print this help and exit.
 --log=...          Log file. Full path to and the name for the log file. NOTE:

sql/item_func.cc

@@ -616,6 +616,14 @@ Item *Item_func::get_tmp_table_item(THD *thd)
   return copy_or_same(thd);
 }
 
+double Item_int_func::val_real()
+{
+  DBUG_ASSERT(fixed == 1);
+
+  return unsigned_flag ? (double) ((ulonglong) val_int()) : (double) val_int();
+}
+
+
 String *Item_int_func::val_str(String *str)
 {
   DBUG_ASSERT(fixed == 1);
@@ -804,7 +812,10 @@ double Item_func_numhybrid::val_real()
     return result;
   }
   case INT_RESULT:
-    return (double)int_op();
+  {
+    longlong result= int_op();
+    return unsigned_flag ? (double) ((ulonglong) result) : (double) result;
+  }
   case REAL_RESULT:
     return real_op();
   case STRING_RESULT:
@@ -1341,6 +1352,8 @@ longlong Item_func_mod::int_op()
   DBUG_ASSERT(fixed == 1);
   longlong value=  args[0]->val_int();
   longlong val2= args[1]->val_int();
+  longlong result;
+
   if ((null_value= args[0]->null_value || args[1]->null_value))
     return 0; /* purecov: inspected */
   if (val2 == 0)
@@ -1350,9 +1363,13 @@ longlong Item_func_mod::int_op()
   }
 
   if (args[0]->unsigned_flag)
-    return ((ulonglong) value) % val2;
+    result= args[1]->unsigned_flag ? 
+      ((ulonglong) value) % ((ulonglong) val2) : ((ulonglong) value) % val2;
+  else
+    result= args[1]->unsigned_flag ?
+      value % ((ulonglong) val2) : value % val2;
 
-  return value % val2;
+  return result;
 }
 
 double Item_func_mod::real_op()
@@ -1407,6 +1424,7 @@ void Item_func_mod::fix_length_and_dec()
 {
   Item_num_op::fix_length_and_dec();
   maybe_null= 1;
+  unsigned_flag= args[0]->unsigned_flag;
 }
 
 
@@ -1485,8 +1503,9 @@ double Item_func_abs::real_op()
 longlong Item_func_abs::int_op()
 {
   longlong value= args[0]->val_int();
-  null_value= args[0]->null_value;
-  return value >= 0 ? value : -value;
+  if ((null_value= args[0]->null_value))
+    return 0;
+  return (value >= 0) || unsigned_flag ? value : -value;
 }
 
 
@@ -1507,6 +1526,7 @@ my_decimal *Item_func_abs::decimal_op(my_decimal *decimal_value)
 void Item_func_abs::fix_length_and_dec()
 {
   Item_func_num1::fix_length_and_dec();
+  unsigned_flag= args[0]->unsigned_flag;
 }
 
 
@@ -1881,6 +1901,10 @@ my_decimal *Item_func_floor::decimal_op(my_decimal *decimal_value)
 
 void Item_func_round::fix_length_and_dec()
 {
+  int      decimals_to_set;
+  longlong val1;
+  bool     val1_unsigned;
+  
   unsigned_flag= args[0]->unsigned_flag;
   if (!args[1]->const_item())
   {
@@ -1890,7 +1914,13 @@ void Item_func_round::fix_length_and_dec()
     return;
   }
 
-  int decimals_to_set= max((int)args[1]->val_int(), 0);
+  val1= args[1]->val_int();
+  val1_unsigned= args[1]->unsigned_flag;
+  if (val1 < 0)
+    decimals_to_set= val1_unsigned ? INT_MAX : 0;
+  else
+    decimals_to_set= (val1 > INT_MAX) ? INT_MAX : (int) val1;
+
   if (args[0]->decimals == NOT_FIXED_DEC)
   {
     max_length= args[0]->max_length;
@@ -1907,10 +1937,9 @@ void Item_func_round::fix_length_and_dec()
     max_length= float_length(decimals);
     break;
   case INT_RESULT:
-    if (!decimals_to_set &&
-        (truncate || (args[0]->decimal_precision() < DECIMAL_LONGLONG_DIGITS)))
+    if ((!decimals_to_set && truncate) || (args[0]->decimal_precision() < DECIMAL_LONGLONG_DIGITS))
     {
-      int length_can_increase= test(!truncate && (args[1]->val_int() < 0));
+      int length_can_increase= test(!truncate && (val1 < 0) && !val1_unsigned);
       max_length= args[0]->max_length + length_can_increase;
       /* Here we can keep INT_RESULT */
       hybrid_type= INT_RESULT;
@@ -1936,10 +1965,12 @@ void Item_func_round::fix_length_and_dec()
   }
 }
 
-double my_double_round(double value, int dec, bool truncate)
+double my_double_round(double value, longlong dec, bool dec_unsigned,
+                       bool truncate)
 {
   double tmp;
-  uint abs_dec= abs(dec);
+  bool dec_negative= (dec < 0) && !dec_unsigned;
+  ulonglong abs_dec= dec_negative ? -dec : dec;
   /*
     tmp2 is here to avoid return the value with 80 bit precision
     This will fix that the test round(0.1,1) = round(0.1,1) is true
@@ -1949,7 +1980,11 @@ double my_double_round(double value, int dec, bool truncate)
   tmp=(abs_dec < array_elements(log_10) ?
        log_10[abs_dec] : pow(10.0,(double) abs_dec));
 
-  if (truncate)
+  if (dec_negative && isinf(tmp))
+    tmp2= 0;
+  else if (!dec_negative && isinf(value * tmp))
+    tmp2= value;
+  else if (truncate)
   {
     if (value >= 0)
       tmp2= dec < 0 ? floor(value/tmp)*tmp : floor(value*tmp)/tmp;
@@ -1965,24 +2000,35 @@ double my_double_round(double value, int dec, bool truncate)
 double Item_func_round::real_op()
 {
   double value= args[0]->val_real();
-  int dec= (int) args[1]->val_int();
 
   if (!(null_value= args[0]->null_value || args[1]->null_value))
-    return my_double_round(value, dec, truncate);
+    return my_double_round(value, args[1]->val_int(), args[1]->unsigned_flag,
+                           truncate);
 
   return 0.0;
 }
 
+/*
+  Rounds a given value to a power of 10 specified as the 'to' argument,
+  avoiding overflows when the value is close to the ulonglong range boundary.
+*/
+
+static inline ulonglong my_unsigned_round(ulonglong value, ulonglong to)
+{
+  ulonglong tmp= value / to * to;
+  return (value - tmp < (to >> 1)) ? tmp : tmp + to;
+}
+
 
 longlong Item_func_round::int_op()
 {
   longlong value= args[0]->val_int();
-  int dec=(int) args[1]->val_int();
+  longlong dec= args[1]->val_int();
   decimals= 0;
-  uint abs_dec;
+  ulonglong abs_dec;
   if ((null_value= args[0]->null_value || args[1]->null_value))
     return 0;
-  if (dec >= 0)
+  if ((dec >= 0) || args[1]->unsigned_flag)
     return value; // integer have not digits after point
 
   abs_dec= -dec;
@@ -1994,21 +2040,12 @@ longlong Item_func_round::int_op()
   tmp= log_10_int[abs_dec];
   
   if (truncate)
-  {
-    if (unsigned_flag)
-      value= (ulonglong(value)/tmp)*tmp;
+    value= (unsigned_flag) ?
+      ((ulonglong) value / tmp) * tmp : (value / tmp) * tmp;
   else
-      value= (value/tmp)*tmp;
-  }
-  else
-  {
-    if (unsigned_flag)
-      value= ((ulonglong(value)+(tmp>>1))/tmp)*tmp;
-    else if ( value >= 0)
-      value= ((value+(tmp>>1))/tmp)*tmp;
-    else
-      value= ((value-(tmp>>1))/tmp)*tmp;
-  }
+    value= (unsigned_flag || value >= 0) ?
+      my_unsigned_round((ulonglong) value, tmp) :
+      -(longlong) my_unsigned_round((ulonglong) -value, tmp);
   return value;
 }
 
@@ -2016,14 +2053,18 @@ longlong Item_func_round::int_op()
 my_decimal *Item_func_round::decimal_op(my_decimal *decimal_value)
 {
   my_decimal val, *value= args[0]->val_decimal(&val);
-  int dec=(int) args[1]->val_int();
-  if (dec > 0)
+  longlong dec= args[1]->val_int();
+  if (dec > 0 || (dec < 0 && args[1]->unsigned_flag))
   {
-    decimals= min(dec, DECIMAL_MAX_SCALE); // to get correct output
+    dec= min((ulonglong) dec, DECIMAL_MAX_SCALE);
+    decimals= (uint8) dec; // to get correct output
   }
+  else if (dec < INT_MIN)
+    dec= INT_MIN;
+    
   if (!(null_value= (args[0]->null_value || args[1]->null_value ||
-                     my_decimal_round(E_DEC_FATAL_ERROR, value, dec, truncate,
-                                      decimal_value) > 1)))
+                     my_decimal_round(E_DEC_FATAL_ERROR, value, (int) dec,
+                                      truncate, decimal_value) > 1)))
     return decimal_value;
   return 0;
 }

sql/item_func.h

@@ -278,7 +278,7 @@ class Item_int_func :public Item_func
   { max_length= 21; }
   Item_int_func(List<Item> &list) :Item_func(list) { max_length= 21; }
   Item_int_func(THD *thd, Item_int_func *item) :Item_func(thd, item) {}
-  double val_real() { DBUG_ASSERT(fixed == 1); return (double) val_int(); }
+  double val_real();
   String *val_str(String*str);
   enum Item_result result_type () const { return INT_RESULT; }
   void fix_length_and_dec() {}
@@ -303,12 +303,6 @@ class Item_func_signed :public Item_int_func
 public:
   Item_func_signed(Item *a) :Item_int_func(a) {}
   const char *func_name() const { return "cast_as_signed"; }
-  double val_real()
-  {
-    double tmp= args[0]->val_real();
-    null_value= args[0]->null_value;
-    return tmp;
-  }
   longlong val_int();
   longlong val_int_from_str(int *error);
   void fix_length_and_dec()

sql/item_strfunc.cc

@@ -1995,7 +1995,7 @@ String *Item_func_format::val_str(String *str)
     double nr= args[0]->val_real();
     if ((null_value=args[0]->null_value))
       return 0; /* purecov: inspected */
-    nr= my_double_round(nr, decimals, FALSE);
+    nr= my_double_round(nr, (longlong) decimals, FALSE, FALSE);
     /* Here default_charset() is right as this is not an automatic conversion */
     str->set(nr,decimals, default_charset());
     if (isnan(nr))

sql/mysql_priv.h

@@ -1539,7 +1539,8 @@ ha_rows filesort(THD *thd, TABLE *form,struct st_sort_field *sortorder,
 		 ha_rows max_rows, ha_rows *examined_rows);
 void filesort_free_buffers(TABLE *table, bool full);
 void change_double_for_sort(double nr,byte *to);
-double my_double_round(double value, int dec, bool truncate);
+double my_double_round(double value, longlong dec, bool dec_unsigned,
+                       bool truncate);
 int get_quick_record(SQL_SELECT *select);
 int calc_weekday(long daynr,bool sunday_first_day_of_week);
 uint calc_week(TIME *l_time, uint week_behaviour, uint *year);

sql/sql_table.cc

@@ -42,6 +42,7 @@ static int copy_data_between_tables(TABLE *from,TABLE *to,
 static bool prepare_blob_field(THD *thd, create_field *sql_field);
 static bool check_engine(THD *thd, const char *table_name,
                          enum db_type *new_engine);                             
+static void set_tmp_file_path(char *buf, size_t bufsize, THD *thd);
 
 
 /*
@@ -1681,11 +1682,7 @@ bool mysql_create_table(THD *thd,const char *db, const char *table_name,
       /* Check if table exists */
   if (create_info->options & HA_LEX_CREATE_TMP_TABLE)
   {
-    my_snprintf(path, sizeof(path), "%s%s%lx_%lx_%x%s",
-		mysql_tmpdir, tmp_file_prefix, current_pid, thd->thread_id,
-		thd->tmp_table++, reg_ext);
-    if (lower_case_table_names)
-      my_casedn_str(files_charset_info, path);
+    set_tmp_file_path(path, sizeof(path), thd);
     create_info->table_options|=HA_CREATE_DELAY_KEY_WRITE;
   }
   else  
@@ -2801,11 +2798,7 @@ bool mysql_create_like_table(THD* thd, TABLE_LIST* table,
   {
     if (find_temporary_table(thd, db, table_name))
       goto table_exists;
-    my_snprintf(dst_path, sizeof(dst_path), "%s%s%lx_%lx_%x%s",
-		mysql_tmpdir, tmp_file_prefix, current_pid,
-		thd->thread_id, thd->tmp_table++, reg_ext);
-    if (lower_case_table_names)
-      my_casedn_str(files_charset_info, dst_path);
+    set_tmp_file_path(dst_path, sizeof(dst_path), thd);
     create_info->table_options|= HA_CREATE_DELAY_KEY_WRITE;
   }
   else
@@ -3316,6 +3309,12 @@ bool mysql_alter_table(THD *thd,char *new_db, char *new_name,
     create_info->avg_row_length= table->s->avg_row_length;
   if (!(used_fields & HA_CREATE_USED_DEFAULT_CHARSET))
     create_info->default_table_charset= table->s->table_charset;
+  if (!(used_fields & HA_CREATE_USED_AUTO) && table->found_next_number_field)
+  {
+    /* Table has an autoincrement, copy value to new table */
+    table->file->info(HA_STATUS_AUTO);
+    create_info->auto_increment_value= table->file->auto_increment_value;
+  }
 
   restore_record(table, s->default_values);     // Empty record for DEFAULT
   List_iterator<Alter_drop> drop_it(alter_info->drop_list);
@@ -4313,3 +4312,16 @@ static bool check_engine(THD *thd, const char *table_name,
   }
   return FALSE;
 }
+
+static void set_tmp_file_path(char *buf, size_t bufsize, THD *thd)
+{
+  char *p= strnmov(buf, mysql_tmpdir, bufsize);
+  my_snprintf(p, bufsize - (p - buf), "%s%lx_%lx_%x%s",
+              tmp_file_prefix, current_pid,
+              thd->thread_id, thd->tmp_table++, reg_ext);
+  if (lower_case_table_names)
+  {
+    /* Convert all except tmpdir to lower case */
+    my_casedn_str(files_charset_info, p);
+  }
+}

sql/sql_update.cc

@@ -1354,21 +1354,20 @@ bool multi_update::send_data(List<Item> &not_used_values)
       memcpy((char*) tmp_table->field[0]->ptr,
 	     (char*) table->file->ref, table->file->ref_length);
       /* Write row, ignoring duplicated updates to a row */
-      if ((error= tmp_table->file->write_row(tmp_table->record[0])))
+      error= tmp_table->file->write_row(tmp_table->record[0]);
+      if (error != HA_ERR_FOUND_DUPP_KEY && error != HA_ERR_FOUND_DUPP_UNIQUE)
       {
-        if (error != HA_ERR_FOUND_DUPP_KEY &&
-            error != HA_ERR_FOUND_DUPP_UNIQUE &&
+        if (error &&
             create_myisam_from_heap(thd, tmp_table,
                                     tmp_table_param + offset, error, 1))
         {
-	  do_update=0;
+          do_update= 0;
           DBUG_RETURN(1);			// Not a table_is_full error
         }
-      }
-      else
         found++;
       }
     }
+  }
   DBUG_RETURN(0);
 }