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Bug#14096619: UNABLE TO RESTORE DATABASE DUMP

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Backport of fix for Bug#13581962
This commit is contained in:
Chaithra Gopalareddy 2013-01-31 07:06:30 +05:30
commit 2b4a942a10
5 changed files with 75 additions and 8 deletions
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18
mysql-test/r/cast.result
View File

@ -477,4 +477,22 @@ WHERE CAST(a as BINARY)=x'62736D697468'
AND CAST(a AS BINARY)=x'65736D697468';
a
DROP TABLE t1;
#
# Bug#13581962 HIGH MEMORY USAGE ATTEMPT, THEN CRASH WITH
# LONGTEXT, UNION, USER VARIABLE
# Bug#14096619 UNABLE TO RESTORE DATABASE DUMP
#
CREATE TABLE t1 AS SELECT CONCAT(CAST(REPEAT('9', 1000) AS SIGNED)),
CONCAT(CAST(REPEAT('9', 1000) AS UNSIGNED));
Warnings:
Warning 1292 Truncated incorrect INTEGER value: '99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999'
Warning 1292 Truncated incorrect INTEGER value: '99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999'
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`CONCAT(CAST(REPEAT('9', 1000) AS SIGNED))` varchar(21) NOT NULL DEFAULT '',
`CONCAT(CAST(REPEAT('9', 1000) AS UNSIGNED))` varchar(21) NOT NULL DEFAULT ''
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1;
# End of test for Bug#13581962, Bug#14096619
End of 5.1 tests

18
mysql-test/r/ctype_utf8mb4.result
View File

@ -2539,6 +2539,24 @@ t2 CREATE TABLE `t2` (
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1, t2;
#
# Bug#13581962 HIGH MEMORY USAGE ATTEMPT, THEN CRASH WITH
# LONGTEXT, UNION, USER VARIABLE
# Bug#14096619 UNABLE TO RESTORE DATABASE DUMP
#
CREATE TABLE t1(f1 LONGTEXT CHARACTER SET utf8mb4);
INSERT INTO t1 VALUES ('a');
SELECT @a:= CAST(f1 AS SIGNED) FROM t1
UNION ALL
SELECT CAST(f1 AS SIGNED) FROM t1;
@a:= CAST(f1 AS SIGNED)
0
0
Warnings:
Warning 1292 Truncated incorrect INTEGER value: 'a'
Warning 1292 Truncated incorrect INTEGER value: 'a'
DROP TABLE t1;
# End of test for Bug#13581962,Bug#14096619
#
# End of 5.5 tests
#
#

13
mysql-test/t/cast.test
View File

@ -307,4 +307,17 @@ WHERE CAST(a as BINARY)=x'62736D697468'
DROP TABLE t1;
--echo #
--echo # Bug#13581962 HIGH MEMORY USAGE ATTEMPT, THEN CRASH WITH
--echo # LONGTEXT, UNION, USER VARIABLE
--echo # Bug#14096619 UNABLE TO RESTORE DATABASE DUMP
--echo #
CREATE TABLE t1 AS SELECT CONCAT(CAST(REPEAT('9', 1000) AS SIGNED)),
CONCAT(CAST(REPEAT('9', 1000) AS UNSIGNED));
SHOW CREATE TABLE t1;
DROP TABLE t1;
--echo # End of test for Bug#13581962, Bug#14096619
--echo End of 5.1 tests

15
mysql-test/t/ctype_utf8mb4.test
View File

@ -1811,6 +1811,21 @@ CREATE TABLE t2 AS SELECT CONCAT(s1) FROM t1;
SHOW CREATE TABLE t2;
DROP TABLE t1, t2;
--echo #
--echo # Bug#13581962 HIGH MEMORY USAGE ATTEMPT, THEN CRASH WITH
--echo # LONGTEXT, UNION, USER VARIABLE
--echo # Bug#14096619 UNABLE TO RESTORE DATABASE DUMP
--echo #
CREATE TABLE t1(f1 LONGTEXT CHARACTER SET utf8mb4);
INSERT INTO t1 VALUES ('a');
SELECT @a:= CAST(f1 AS SIGNED) FROM t1
UNION ALL
SELECT CAST(f1 AS SIGNED) FROM t1;
DROP TABLE t1;
--echo # End of test for Bug#13581962,Bug#14096619
--echo #
--echo # End of 5.5 tests
--echo #

19
sql/item_func.h
View File

@ -480,12 +480,18 @@ public:
class Item_func_signed :public Item_int_func
{
public:
Item_func_signed(Item *a) :Item_int_func(a) {}
Item_func_signed(Item *a) :Item_int_func(a)
{
unsigned_flag= 0;
}
const char *func_name() const { return "cast_as_signed"; }
longlong val_int();
longlong val_int_from_str(int *error);
void fix_length_and_dec()
{ fix_char_length(args[0]->max_char_length()); unsigned_flag=0; }
{
fix_char_length(min(args[0]->max_char_length(),
MY_INT64_NUM_DECIMAL_DIGITS));
}
virtual void print(String *str, enum_query_type query_type);
uint decimal_precision() const { return args[0]->decimal_precision(); }
};
@ -494,14 +500,11 @@ public:
class Item_func_unsigned :public Item_func_signed
{
public:
Item_func_unsigned(Item *a) :Item_func_signed(a) {}
const char *func_name() const { return "cast_as_unsigned"; }
void fix_length_and_dec()
Item_func_unsigned(Item *a) :Item_func_signed(a)
{
fix_char_length(min(args[0]->max_char_length(),
DECIMAL_MAX_PRECISION + 2));
unsigned_flag=1;
unsigned_flag= 1;
}
const char *func_name() const { return "cast_as_unsigned"; }
longlong val_int();
virtual void print(String *str, enum_query_type query_type);
};