MDEV-19239 ERROR 1300 (HY000): Invalid utf8 character string in 10.3.13-MariaDB

A sequence of <digits>e<mbhead><mbtail>, e.g.:

  SELECT 123eXYzzz FROM t1;

was not scanned correctly (where XY is a multi-byte character).

The multi-byte head byte X was appended to 123e separately from
the multi-byte tail byte Y, so a pointer to "Yzzz" was passed
into scan_ident_start(), which failed on a bad multi-byte sequence.

After this change, scan_ident_start() gets a pointer to "XYzzz",
so it correctly sees the whole multi-byte character.

1 files changed, 68 insertions, 0 deletions

diff --git a/mysql-test/main/ctype_utf8.result b/mysql-test/main/ctype_utf8.result
index 9c2fcb84765..6a72f60a437 100644
--- a/mysql-test/main/ctype_utf8.result
+++ b/mysql-test/main/ctype_utf8.result
@@ -11300,5 +11300,73 @@ t1	CREATE TABLE `t1` (
 DROP TABLE t1;
 SET sql_mode=DEFAULT;
 #
+# MDEV-19239 ERROR 1300 (HY000): Invalid utf8 character string in 10.3.13-MariaDB
+#
+SET NAMES utf8;
+SELECT
+x.消息ID,
+x.消息TITLE,
+x.消息类型,
+x.发送时间,
+x.阅读时间,x.老师ID,
+IF(x.四天内最近一次登录时间='2100-01-01 00:00:00','',x.四天内最近一次登录时间) 四天内最近一次登录时间
+FROM (
+SELECT
+msg.*,
+CASE
+WHEN login.login_time BETWEEN msg.发送时间 AND DATE_ADD(msg.发送时间,INTERVAL 4 DAY)
+THEN login.login_time
+WHEN (login.login_time NOT BETWEEN msg.发送时间 AND DATE_ADD(msg.发送时间,INTERVAL 4 DAY)) AND login.login_time>0
+THEN '2100-01-01 00:00:00' ELSE ''
+      END 四天内最近一次登录时间
+FROM (
+SELECT
+me.id 消息ID,
+me.title 消息TITLE,
+CASE
+WHEN me.type=1
+THEN 'Interview Message'
+        WHEN me.type=2
+THEN 'Orientation Message'
+        WHEN me.type=3
+THEN 'Warning Message'
+        WHEN me.type=4
+THEN 'Fail Message'
+        WHEN me.type=5
+THEN 'FM Message'
+        WHEN me.type=6
+THEN 'Training Message'
+        WHEN me.type=7
+THEN 'TUrgent Message'
+      END 消息类型,
+FROM_UNIXTIME(me.sending_time) 发送时间,
+IF(tar.is_read=1,FROM_UNIXTIME(tar.read_time),'') 阅读时间,
+tar.tid 老师ID
+FROM ebk_message me
+LEFT JOIN ebk_message_target tar
+ON me.id=tar.msg_id
+WHERE
+FROM_UNIXTIME(me.sending_time,'%Y-%m-%d') BETWEEN 'start' AND 'end' AND me.status=1 AND tar.tid>0
+GROUP BY
+tar.tid,
+me.sending_time,me.id) msg
+LEFT JOIN (
+SELECT tid,FROM_UNIXTIME(login_time) login_time
+FROM ebk_teacher_login_log
+WHERE FROM_UNIXTIME(login_time,'%Y-%m-%d') BETWEEN 'start' AND DATE_ADD('end',INTERVAL 4 DAY)
+ORDER BY tid,FROM_UNIXTIME(login_time)) login
+ON
+msg.老师ID=login.tid
+ORDER BY msg.消息ID,msg.发送时间,msg.老师ID,login_time) x
+GROUP BY x.消息ID,x.发送时间,x.老师ID;
+ERROR 42S02: Table 'test.ebk_message' doesn't exist
+SET NAMES utf8;
+CREATE TABLE t1 (x INT);
+INSERT INTO t1 VALUES (1);
+SELECT x AS 5天内最近一次登录时间 FROM t1;
+5天内最近一次登录时间
+1
+DROP TABLE t1;
+#
 # End of 10.3 tests
 #