Fix for bug #19370: DateTime datatype in MySQL has two bugs in it

mysql-test/r/date_formats.result:
  Fix for bug #19370: DateTime datatype in MySQL has two bugs in it
    - results adjusted
mysql-test/r/strict.result:
  Fix for bug #19370: DateTime datatype in MySQL has two bugs in it
    - results adjusted
mysql-test/r/type_datetime.result:
  Fix for bug #19370: DateTime datatype in MySQL has two bugs in it
    - results adjusted
mysql-test/t/strict.test:
  Fix for bug #19370: DateTime datatype in MySQL has two bugs in it
    - tests adjusted
sql-common/my_time.c:
  Fix for bug #19370: DateTime datatype in MySQL has two bugs in it
    - Regardless of the title of the bug the only real bug is that it
      doesn't make sense to have only some invalid parts in a date.
      E.g. a valid day among invalid years or months is totally ambiguous 
      and we should refuse to guess what it means.
  
      To fix it, we add a check that both the year is zero and either day
      or month are zero (year and (day or month)), and if they are then  we
      reject such dates. Doing so should adequately fix the reported problem.

mysql-test/r/date_formats.result

@@ -449,6 +449,8 @@ create table t1 select str_to_date("2003-01-02 10:11:12.0012", "%Y-%m-%d %H:%i:%
 str_to_date("10:11:12.0012", "%H:%i:%S.%f") as f2,
 str_to_date("2003-01-02", "%Y-%m-%d") as f3,
 str_to_date("02", "%d") as f4, str_to_date("02 10", "%d %H") as f5;
+Warnings:
+Warning	1265	Data truncated for column 'f4' at row 1
 describe t1;
 Field	Type	Null	Key	Default	Extra
 f1	datetime	YES		NULL	
@@ -458,7 +460,7 @@ f4	date	YES		NULL
 f5	time	YES		NULL	
 select * from t1;
 f1	f2	f3	f4	f5
-2003-01-02 10:11:12	10:11:12	2003-01-02	0000-00-02	58:00:00
+2003-01-02 10:11:12	10:11:12	2003-01-02	0000-00-00	58:00:00
 drop table t1;
 create table t1 select "02 10" as a, "%d %H" as b;
 select str_to_date(a,b) from t1;

mysql-test/r/strict.result

@@ -5,7 +5,9 @@ select @@sql_mode;
 REAL_AS_FLOAT,PIPES_AS_CONCAT,ANSI_QUOTES,IGNORE_SPACE,ANSI,STRICT_TRANS_TABLES,STRICT_ALL_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,TRADITIONAL,NO_AUTO_CREATE_USER
 DROP TABLE IF EXISTS t1;
 CREATE TABLE t1 (col1 date);
-INSERT INTO t1 VALUES('2004-01-01'),('0000-10-31'),('2004-02-29');
+INSERT INTO t1 VALUES('2004-01-01'),('2004-02-29');
+INSERT INTO t1 VALUES('0000-10-31');
+ERROR 22007: Incorrect date value: '0000-10-31' for column 'col1' at row 1
 INSERT INTO t1 VALUES('2004-0-31');
 ERROR 22007: Incorrect date value: '2004-0-31' for column 'col1' at row 1
 INSERT INTO t1 VALUES('2004-01-02'),('2004-0-31');
@@ -54,7 +56,6 @@ Warning	1265	Data truncated for column 'col1' at row 3
 select * from t1;
 col1
 2004-01-01
-0000-10-31
 2004-02-29
 2004-01-02
 2004-01-03
@@ -121,7 +122,9 @@ col1
 drop table t1;
 set @@sql_mode='ansi,traditional';
 CREATE TABLE t1 (col1 datetime);
-INSERT INTO t1 VALUES('2004-10-31 15:30:00'),('0000-10-31 15:30:00'),('2004-02-29 15:30:00');
+INSERT INTO t1 VALUES('2004-10-31 15:30:00'),('2004-02-29 15:30:00');
+INSERT INTO t1 VALUES('0000-10-31 15:30:00');
+ERROR 22007: Incorrect datetime value: '0000-10-31 15:30:00' for column 'col1' at row 1
 INSERT INTO t1 VALUES('2004-0-31 15:30:00');
 ERROR 22007: Incorrect datetime value: '2004-0-31 15:30:00' for column 'col1' at row 1
 INSERT INTO t1 VALUES('2004-10-0 15:30:00');
@@ -141,7 +144,6 @@ ERROR 22007: Incorrect datetime value: '59' for column 'col1' at row 1
 select * from t1;
 col1
 2004-10-31 15:30:00
-0000-10-31 15:30:00
 2004-02-29 15:30:00
 drop table t1;
 CREATE TABLE t1 (col1 timestamp);
@@ -204,6 +206,7 @@ INSERT INTO t1 (col1) VALUES (STR_TO_DATE('15.10.2004','%d.%m.%Y'));
 INSERT INTO t1 (col2) VALUES (STR_TO_DATE('15.10.2004 10.15','%d.%m.%Y %H.%i'));
 INSERT INTO t1 (col3) VALUES (STR_TO_DATE('15.10.2004 10.15','%d.%m.%Y %H.%i'));
 INSERT INTO t1 (col1) VALUES(STR_TO_DATE('31.10.0000 15.30','%d.%m.%Y %H.%i'));
+ERROR 22007: Incorrect date value: '0000-10-31 15:30:00' for column 'col1' at row 1
 INSERT INTO t1 (col1) VALUES(STR_TO_DATE('31.0.2004 15.30','%d.%m.%Y %H.%i'));
 ERROR 22007: Incorrect date value: '2004-00-31 15:30:00' for column 'col1' at row 1
 INSERT INTO t1 (col1) VALUES(STR_TO_DATE('0.10.2004 15.30','%d.%m.%Y %H.%i'));
@@ -219,6 +222,7 @@ ERROR HY000: Incorrect datetime value: '15.13.2004 15.30' for function str_to_ti
 INSERT INTO t1 (col1) VALUES(STR_TO_DATE('00.00.0000','%d.%m.%Y'));
 ERROR 22007: Incorrect date value: '0000-00-00' for column 'col1' at row 1
 INSERT INTO t1 (col2) VALUES(STR_TO_DATE('31.10.0000 15.30','%d.%m.%Y %H.%i'));
+ERROR 22007: Incorrect datetime value: '0000-10-31 15:30:00' for column 'col2' at row 1
 INSERT INTO t1 (col2) VALUES(STR_TO_DATE('31.0.2004 15.30','%d.%m.%Y %H.%i'));
 ERROR 22007: Incorrect datetime value: '2004-00-31 15:30:00' for column 'col2' at row 1
 INSERT INTO t1 (col2) VALUES(STR_TO_DATE('0.10.2004 15.30','%d.%m.%Y %H.%i'));
@@ -255,6 +259,7 @@ INSERT INTO t1 (col1) VALUES (CAST('2004-10-15' AS DATE));
 INSERT INTO t1 (col2) VALUES (CAST('2004-10-15 10:15' AS DATETIME));
 INSERT INTO t1 (col3) VALUES (CAST('2004-10-15 10:15' AS DATETIME));
 INSERT INTO t1 (col1) VALUES(CAST('0000-10-31' AS DATE));
+ERROR 22007: Truncated incorrect datetime value: '0000-10-31'
 INSERT INTO t1 (col1) VALUES(CAST('2004-10-0' AS DATE));
 ERROR 22007: Incorrect date value: '2004-10-00' for column 'col1' at row 1
 INSERT INTO t1 (col1) VALUES(CAST('2004-0-10' AS DATE));
@@ -262,6 +267,7 @@ ERROR 22007: Incorrect date value: '2004-00-10' for column 'col1' at row 1
 INSERT INTO t1 (col1) VALUES(CAST('0000-00-00' AS DATE));
 ERROR 22007: Truncated incorrect datetime value: '0000-00-00'
 INSERT INTO t1 (col2) VALUES(CAST('0000-10-31 15:30' AS DATETIME));
+ERROR 22007: Truncated incorrect datetime value: '0000-10-31 15:30'
 INSERT INTO t1 (col2) VALUES(CAST('2004-10-0 15:30' AS DATETIME));
 ERROR 22007: Incorrect datetime value: '2004-10-00 15:30:00' for column 'col2' at row 1
 INSERT INTO t1 (col2) VALUES(CAST('2004-0-10 15:30' AS DATETIME));
@@ -269,7 +275,7 @@ ERROR 22007: Incorrect datetime value: '2004-00-10 15:30:00' for column 'col2' a
 INSERT INTO t1 (col2) VALUES(CAST('0000-00-00' AS DATETIME));
 ERROR 22007: Truncated incorrect datetime value: '0000-00-00'
 INSERT INTO t1 (col3) VALUES(CAST('0000-10-31 15:30' AS DATETIME));
-ERROR 22007: Incorrect datetime value: '0000-10-31 15:30:00' for column 'col3' at row 1
+ERROR 22007: Truncated incorrect datetime value: '0000-10-31 15:30'
 INSERT INTO t1 (col3) VALUES(CAST('2004-10-0 15:30' AS DATETIME));
 ERROR 22007: Incorrect datetime value: '2004-10-00 15:30:00' for column 'col3' at row 1
 INSERT INTO t1 (col3) VALUES(CAST('2004-0-10 15:30' AS DATETIME));
@@ -282,6 +288,7 @@ INSERT INTO t1 (col1) VALUES (CONVERT('2004-10-15',DATE));
 INSERT INTO t1 (col2) VALUES (CONVERT('2004-10-15 10:15',DATETIME));
 INSERT INTO t1 (col3) VALUES (CONVERT('2004-10-15 10:15',DATETIME));
 INSERT INTO t1 (col1) VALUES(CONVERT('0000-10-31' , DATE));
+ERROR 22007: Truncated incorrect datetime value: '0000-10-31'
 INSERT INTO t1 (col1) VALUES(CONVERT('2004-10-0' , DATE));
 ERROR 22007: Incorrect date value: '2004-10-00' for column 'col1' at row 1
 INSERT INTO t1 (col1) VALUES(CONVERT('2004-0-10' , DATE));
@@ -289,6 +296,7 @@ ERROR 22007: Incorrect date value: '2004-00-10' for column 'col1' at row 1
 INSERT INTO t1 (col1) VALUES(CONVERT('0000-00-00',DATE));
 ERROR 22007: Truncated incorrect datetime value: '0000-00-00'
 INSERT INTO t1 (col2) VALUES(CONVERT('0000-10-31 15:30',DATETIME));
+ERROR 22007: Truncated incorrect datetime value: '0000-10-31 15:30'
 INSERT INTO t1 (col2) VALUES(CONVERT('2004-10-0 15:30',DATETIME));
 ERROR 22007: Incorrect datetime value: '2004-10-00 15:30:00' for column 'col2' at row 1
 INSERT INTO t1 (col2) VALUES(CONVERT('2004-0-10 15:30',DATETIME));
@@ -296,7 +304,7 @@ ERROR 22007: Incorrect datetime value: '2004-00-10 15:30:00' for column 'col2' a
 INSERT INTO t1 (col2) VALUES(CONVERT('0000-00-00',DATETIME));
 ERROR 22007: Truncated incorrect datetime value: '0000-00-00'
 INSERT INTO t1 (col3) VALUES(CONVERT('0000-10-31 15:30',DATETIME));
-ERROR 22007: Incorrect datetime value: '0000-10-31 15:30:00' for column 'col3' at row 1
+ERROR 22007: Truncated incorrect datetime value: '0000-10-31 15:30'
 INSERT INTO t1 (col3) VALUES(CONVERT('2004-10-0 15:30',DATETIME));
 ERROR 22007: Incorrect datetime value: '2004-10-00 15:30:00' for column 'col3' at row 1
 INSERT INTO t1 (col3) VALUES(CONVERT('2004-0-10 15:30',DATETIME));

mysql-test/r/type_datetime.result

@@ -26,6 +26,8 @@ Table	Op	Msg_type	Msg_text
 test.t1	check	status	OK
 delete from t1;
 insert into t1 values("000101"),("691231"),("700101"),("991231"),("00000101"),("00010101"),("99991231"),("00101000000"),("691231000000"),("700101000000"),("991231235959"),("10000101000000"),("99991231235959"),("20030100000000"),("20030000000000");
+Warnings:
+Warning	1264	Out of range value adjusted for column 't' at row 5
 insert into t1 values ("2003-003-03");
 insert into t1 values ("20030102T131415"),("2001-01-01T01:01:01"), ("2001-1-1T1:01:01");
 select * from t1;
@@ -34,7 +36,7 @@ t
 2069-12-31 00:00:00
 1970-01-01 00:00:00
 1999-12-31 00:00:00
-0000-01-01 00:00:00
+0000-00-00 00:00:00
 0001-01-01 00:00:00
 9999-12-31 00:00:00
 2000-10-10 00:00:00

mysql-test/t/strict.test

@@ -13,7 +13,9 @@ DROP TABLE IF EXISTS t1;
 # Test INSERT with DATE
 
 CREATE TABLE t1 (col1 date);
-INSERT INTO t1 VALUES('2004-01-01'),('0000-10-31'),('2004-02-29');
+INSERT INTO t1 VALUES('2004-01-01'),('2004-02-29');
+--error 1292
+INSERT INTO t1 VALUES('0000-10-31');
 
 # All test cases expected to fail should return 
 #      SQLSTATE 22007 <invalid date value>
@@ -97,7 +99,9 @@ set @@sql_mode='ansi,traditional';
 # Test INSERT with DATETIME
 
 CREATE TABLE t1 (col1 datetime);
-INSERT INTO t1 VALUES('2004-10-31 15:30:00'),('0000-10-31 15:30:00'),('2004-02-29 15:30:00');
+INSERT INTO t1 VALUES('2004-10-31 15:30:00'),('2004-02-29 15:30:00');
+--error 1292
+INSERT INTO t1 VALUES('0000-10-31 15:30:00');
 
 # All test cases expected to fail should return 
 #      SQLSTATE 22007 <invalid datetime value>
@@ -190,6 +194,7 @@ INSERT INTO t1 (col3) VALUES (STR_TO_DATE('15.10.2004 10.15','%d.%m.%Y %H.%i'));
 #       All test cases expected to fail should return 
 #       SQLSTATE 22007 <invalid date value>
 
+--error 1292
 INSERT INTO t1 (col1) VALUES(STR_TO_DATE('31.10.0000 15.30','%d.%m.%Y %H.%i'));
 
 --error 1292
@@ -211,6 +216,7 @@ INSERT INTO t1 (col1) VALUES(STR_TO_DATE('00.00.0000','%d.%m.%Y'));
 #       All test cases expected to fail should return 
 #       SQLSTATE 22007 <invalid datetime value>
 
+--error 1292
 INSERT INTO t1 (col2) VALUES(STR_TO_DATE('31.10.0000 15.30','%d.%m.%Y %H.%i'));
 
 --error 1292
@@ -264,6 +270,8 @@ INSERT INTO t1 (col3) VALUES (CAST('2004-10-15 10:15' AS DATETIME));
 ## Test INSERT with CAST AS DATE into DATE
 #       All test cases expected to fail should return 
 #       SQLSTATE 22007 <invalid date value>
+
+--error 1292
 INSERT INTO t1 (col1) VALUES(CAST('0000-10-31' AS DATE));
 
 --error 1292
@@ -290,6 +298,8 @@ INSERT INTO t1 (col1) VALUES(CAST('0000-00-00' AS DATE));
 ## Test INSERT with CAST AS DATETIME into DATETIME
 #       All test cases expected to fail should return 
 #       SQLSTATE 22007 <invalid datetime value>
+
+--error 1292
 INSERT INTO t1 (col2) VALUES(CAST('0000-10-31 15:30' AS DATETIME));
 
 --error 1292
@@ -356,6 +366,8 @@ INSERT INTO t1 (col3) VALUES (CONVERT('2004-10-15 10:15',DATETIME));
 ## Test INSERT with CONVERT to DATE into DATE
 #       All test cases expected to fail should return 
 #       SQLSTATE 22007 <invalid date value>
+
+--error 1292
 INSERT INTO t1 (col1) VALUES(CONVERT('0000-10-31' , DATE));
 
 --error 1292
@@ -381,6 +393,8 @@ INSERT INTO t1 (col1) VALUES(CONVERT('0000-00-00',DATE));
 ## Test INSERT with CONVERT to DATETIME into DATETIME
 #       All test cases expected to fail should return 
 #       SQLSTATE 22007 <invalid datetime value>
+
+--error 1292
 INSERT INTO t1 (col2) VALUES(CONVERT('0000-10-31 15:30',DATETIME));
 
 --error 1292

sql-common/my_time.c

@@ -69,6 +69,7 @@ uint calc_days_in_year(uint year)
     Here we assume that year and month is ok !
     If month is 0 we allow any date. (This only happens if we allow zero
     date parts in str_to_datetime())
+    Disallow dates with zero year and non-zero month and/or day.
 
   RETURN
     0  ok
@@ -85,7 +86,8 @@ static my_bool check_date(const MYSQL_TIME *ltime, my_bool not_zero_date,
         (!(flags & TIME_INVALID_DATES) &&
          ltime->month && ltime->day > days_in_month[ltime->month-1] &&
          (ltime->month != 2 || calc_days_in_year(ltime->year) != 366 ||
-          ltime->day != 29)))
+          ltime->day != 29)) ||
+        (ltime->year == 0 && (ltime->month != 0 || ltime->day != 0)))
     {
       *was_cut= 2;
       return TRUE;