MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP

Fixed a wrong assertion.

mysql-test/include/ctype_filesort.inc

@@ -13,3 +13,14 @@ delete from t1;
 insert into t1 values ('a'), ('a '), ('a\t');
 select collation(a),hex(a) from t1 order by a;
 drop table t1;
+
+
+--echo #
+--echo # MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+--echo #
+SELECT @@collation_connection;
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP; 
+DROP TABLE t1;

mysql-test/r/ctype_big5.result

@@ -103,6 +103,23 @@ big5_chinese_ci	6109
 big5_chinese_ci	61
 big5_chinese_ci	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+big5_chinese_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 create table t1 engine=innodb select repeat('a',50) as c1;
 alter table t1 add index(c1(5));
 insert into t1 values ('abcdefg'),('abcde100'),('abcde110'),('abcde111');
@@ -170,6 +187,23 @@ big5_bin	6109
 big5_bin	61
 big5_bin	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+big5_bin
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 create table t1 engine=innodb select repeat('a',50) as c1;
 alter table t1 add index(c1(5));
 insert into t1 values ('abcdefg'),('abcde100'),('abcde110'),('abcde111');

mysql-test/r/ctype_eucjpms.result

@@ -9809,6 +9809,23 @@ eucjpms_japanese_ci	6109
 eucjpms_japanese_ci	61
 eucjpms_japanese_ci	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+eucjpms_japanese_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 CREATE TABLE t1 AS
 SELECT 10 AS a, REPEAT('a',20) AS b, REPEAT('a',8) AS c, REPEAT('a',8) AS d;
 ALTER TABLE t1 ADD PRIMARY KEY(a), ADD KEY(b);
@@ -9836,6 +9853,23 @@ eucjpms_bin	6109
 eucjpms_bin	61
 eucjpms_bin	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+eucjpms_bin
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 CREATE TABLE t1 AS
 SELECT 10 AS a, REPEAT('a',20) AS b, REPEAT('a',8) AS c, REPEAT('a',8) AS d;
 ALTER TABLE t1 ADD PRIMARY KEY(a), ADD KEY(b);

mysql-test/r/ctype_euckr.result

@@ -103,6 +103,23 @@ euckr_korean_ci	6109
 euckr_korean_ci	61
 euckr_korean_ci	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+euckr_korean_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 create table t1 engine=innodb select repeat('a',50) as c1;
 alter table t1 add index(c1(5));
 insert into t1 values ('abcdefg'),('abcde100'),('abcde110'),('abcde111');
@@ -170,6 +187,23 @@ euckr_bin	6109
 euckr_bin	61
 euckr_bin	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+euckr_bin
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 create table t1 engine=innodb select repeat('a',50) as c1;
 alter table t1 add index(c1(5));
 insert into t1 values ('abcdefg'),('abcde100'),('abcde110'),('abcde111');

mysql-test/r/ctype_gb2312.result

@@ -103,6 +103,23 @@ gb2312_chinese_ci	6109
 gb2312_chinese_ci	61
 gb2312_chinese_ci	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+gb2312_chinese_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 create table t1 engine=innodb select repeat('a',50) as c1;
 alter table t1 add index(c1(5));
 insert into t1 values ('abcdefg'),('abcde100'),('abcde110'),('abcde111');
@@ -170,6 +187,23 @@ gb2312_bin	6109
 gb2312_bin	61
 gb2312_bin	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+gb2312_bin
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 create table t1 engine=innodb select repeat('a',50) as c1;
 alter table t1 add index(c1(5));
 insert into t1 values ('abcdefg'),('abcde100'),('abcde110'),('abcde111');

mysql-test/r/ctype_gbk.result

@@ -103,6 +103,23 @@ gbk_chinese_ci	6109
 gbk_chinese_ci	61
 gbk_chinese_ci	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+gbk_chinese_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 create table t1 engine=innodb select repeat('a',50) as c1;
 alter table t1 add index(c1(5));
 insert into t1 values ('abcdefg'),('abcde100'),('abcde110'),('abcde111');
@@ -170,6 +187,23 @@ gbk_bin	6109
 gbk_bin	61
 gbk_bin	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+gbk_bin
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 create table t1 engine=innodb select repeat('a',50) as c1;
 alter table t1 add index(c1(5));
 insert into t1 values ('abcdefg'),('abcde100'),('abcde110'),('abcde111');

mysql-test/r/ctype_latin1.result

@@ -318,6 +318,23 @@ latin1_swedish_ci	6109
 latin1_swedish_ci	61
 latin1_swedish_ci	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+latin1_swedish_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 select @@collation_connection;
 @@collation_connection
 latin1_swedish_ci
@@ -365,6 +382,23 @@ latin1_bin	6109
 latin1_bin	61
 latin1_bin	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+latin1_bin
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 select @@collation_connection;
 @@collation_connection
 latin1_bin

mysql-test/r/ctype_latin1_de.result

@@ -326,6 +326,23 @@ latin1_german2_ci	6109
 latin1_german2_ci	61
 latin1_german2_ci	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+latin1_german2_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 drop table if exists t1;
 create table t1 as select repeat(' ', 64) as s1;
 select collation(s1) from t1;

mysql-test/r/ctype_sjis.result

@@ -81,6 +81,23 @@ sjis_japanese_ci	6109
 sjis_japanese_ci	61
 sjis_japanese_ci	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+sjis_japanese_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 create table t1 engine=innodb select repeat('a',50) as c1;
 alter table t1 add index(c1(5));
 insert into t1 values ('abcdefg'),('abcde100'),('abcde110'),('abcde111');
@@ -167,6 +184,23 @@ sjis_bin	6109
 sjis_bin	61
 sjis_bin	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+sjis_bin
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 create table t1 engine=innodb select repeat('a',50) as c1;
 alter table t1 add index(c1(5));
 insert into t1 values ('abcdefg'),('abcde100'),('abcde110'),('abcde111');

mysql-test/r/ctype_tis620.result

@@ -2947,6 +2947,23 @@ tis620_thai_ci	6109
 tis620_thai_ci	61
 tis620_thai_ci	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+tis620_thai_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 select @@collation_connection;
 @@collation_connection
 tis620_thai_ci
@@ -2975,6 +2992,23 @@ tis620_bin	6109
 tis620_bin	61
 tis620_bin	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+tis620_bin
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 select @@collation_connection;
 @@collation_connection
 tis620_bin

mysql-test/r/ctype_uca.result

@@ -2767,6 +2767,23 @@ utf8_unicode_ci	6109
 utf8_unicode_ci	61
 utf8_unicode_ci	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+utf8_unicode_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 select @@collation_connection;
 @@collation_connection
 utf8_unicode_ci

mysql-test/r/ctype_ucs.result

@@ -734,6 +734,23 @@ ucs2_general_ci	00610009
 ucs2_general_ci	0061
 ucs2_general_ci	00610020
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+ucs2_general_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 select @@collation_connection;
 @@collation_connection
 ucs2_general_ci
@@ -834,6 +851,23 @@ ucs2_bin	00610009
 ucs2_bin	0061
 ucs2_bin	00610020
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+ucs2_bin
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 select @@collation_connection;
 @@collation_connection
 ucs2_bin

mysql-test/r/ctype_ujis.result

@@ -2217,6 +2217,23 @@ ujis_japanese_ci	6109
 ujis_japanese_ci	61
 ujis_japanese_ci	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+ujis_japanese_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 create table t1 engine=innodb select repeat('a',50) as c1;
 alter table t1 add index(c1(5));
 insert into t1 values ('abcdefg'),('abcde100'),('abcde110'),('abcde111');
@@ -2284,6 +2301,23 @@ ujis_bin	6109
 ujis_bin	61
 ujis_bin	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+ujis_bin
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 create table t1 engine=innodb select repeat('a',50) as c1;
 alter table t1 add index(c1(5));
 insert into t1 values ('abcdefg'),('abcde100'),('abcde110'),('abcde111');

mysql-test/r/ctype_utf16.result

@@ -583,6 +583,23 @@ utf16_general_ci	00610009
 utf16_general_ci	0061
 utf16_general_ci	00610020
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+utf16_general_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 select @@collation_connection;
 @@collation_connection
 utf16_general_ci
@@ -613,6 +630,23 @@ utf16_bin	0061
 utf16_bin	00610020
 drop table t1;
 #
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+utf16_bin
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
+#
 # Bug#55980 Character sets: supplementary character _bin ordering is wrong
 #
 CREATE TABLE t1 AS SELECT REPEAT('a',1) AS a LIMIT 0;

mysql-test/r/ctype_utf16_uca.result

@@ -2272,6 +2272,23 @@ utf16_unicode_ci	00610009
 utf16_unicode_ci	0061
 utf16_unicode_ci	00610020
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+utf16_unicode_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 select @@collation_connection;
 @@collation_connection
 utf16_unicode_ci

mysql-test/r/ctype_utf32.result

@@ -582,6 +582,23 @@ utf32_general_ci	0000006100000009
 utf32_general_ci	00000061
 utf32_general_ci	0000006100000020
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+utf32_general_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 select @@collation_connection;
 @@collation_connection
 utf32_general_ci
@@ -612,6 +629,23 @@ utf32_bin	00000061
 utf32_bin	0000006100000020
 drop table t1;
 #
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+utf32_bin
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
+#
 # Bug#55980 Character sets: supplementary character _bin ordering is wrong
 #
 CREATE TABLE t1 AS SELECT REPEAT('a',1) AS a LIMIT 0;

mysql-test/r/ctype_utf32_uca.result

@@ -2272,6 +2272,23 @@ utf32_unicode_ci	0000006100000009
 utf32_unicode_ci	00000061
 utf32_unicode_ci	0000006100000020
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+utf32_unicode_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 select @@collation_connection;
 @@collation_connection
 utf32_unicode_ci

mysql-test/r/ctype_utf8.result

@@ -924,6 +924,23 @@ utf8_general_ci	6109
 utf8_general_ci	61
 utf8_general_ci	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+utf8_general_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 select @@collation_connection;
 @@collation_connection
 utf8_general_ci
@@ -1006,6 +1023,23 @@ utf8_bin	6109
 utf8_bin	61
 utf8_bin	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+utf8_bin
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 select @@collation_connection;
 @@collation_connection
 utf8_bin

mysql-test/r/ctype_utf8mb4.result

@@ -924,6 +924,23 @@ utf8mb4_general_ci	6109
 utf8mb4_general_ci	61
 utf8mb4_general_ci	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+utf8mb4_general_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 select @@collation_connection;
 @@collation_connection
 utf8mb4_general_ci
@@ -988,6 +1005,23 @@ utf8mb4_bin	61
 utf8mb4_bin	6120
 drop table t1;
 #
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+utf8mb4_bin
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
+#
 # Bug#55980 Character sets: supplementary character _bin ordering is wrong
 #
 CREATE TABLE t1 AS SELECT REPEAT('a',1) AS a LIMIT 0;

mysql-test/r/ctype_utf8mb4_heap.result

@@ -863,6 +863,23 @@ utf8mb4_general_ci	6109
 utf8mb4_general_ci	61
 utf8mb4_general_ci	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+utf8mb4_general_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 select @@collation_connection;
 @@collation_connection
 utf8mb4_general_ci
@@ -926,6 +943,23 @@ utf8mb4_bin	6109
 utf8mb4_bin	61
 utf8mb4_bin	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+utf8mb4_bin
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 select @@collation_connection;
 @@collation_connection
 utf8mb4_bin

mysql-test/r/ctype_utf8mb4_innodb.result

@@ -924,6 +924,23 @@ utf8mb4_general_ci	6109
 utf8mb4_general_ci	61
 utf8mb4_general_ci	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+utf8mb4_general_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 select @@collation_connection;
 @@collation_connection
 utf8mb4_general_ci
@@ -987,6 +1004,23 @@ utf8mb4_bin	6109
 utf8mb4_bin	61
 utf8mb4_bin	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+utf8mb4_bin
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 select @@collation_connection;
 @@collation_connection
 utf8mb4_bin

mysql-test/r/ctype_utf8mb4_myisam.result

@@ -924,6 +924,23 @@ utf8mb4_general_ci	6109
 utf8mb4_general_ci	61
 utf8mb4_general_ci	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+utf8mb4_general_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 select @@collation_connection;
 @@collation_connection
 utf8mb4_general_ci
@@ -987,6 +1004,23 @@ utf8mb4_bin	6109
 utf8mb4_bin	61
 utf8mb4_bin	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+utf8mb4_bin
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 select @@collation_connection;
 @@collation_connection
 utf8mb4_bin

mysql-test/suite/binlog/r/binlog_row_ctype_cp932.result

@@ -11418,6 +11418,23 @@ cp932_japanese_ci	6109
 cp932_japanese_ci	61
 cp932_japanese_ci	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+cp932_japanese_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 CREATE TABLE t1 AS
 SELECT 10 AS a, REPEAT('a',20) AS b, REPEAT('a',8) AS c, REPEAT('a',8) AS d;
 ALTER TABLE t1 ADD PRIMARY KEY(a), ADD KEY(b);
@@ -11445,6 +11462,23 @@ cp932_bin	6109
 cp932_bin	61
 cp932_bin	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+cp932_bin
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 CREATE TABLE t1 AS
 SELECT 10 AS a, REPEAT('a',20) AS b, REPEAT('a',8) AS c, REPEAT('a',8) AS d;
 ALTER TABLE t1 ADD PRIMARY KEY(a), ADD KEY(b);

mysql-test/suite/binlog/r/binlog_stm_ctype_cp932.result

@@ -11418,6 +11418,23 @@ cp932_japanese_ci	6109
 cp932_japanese_ci	61
 cp932_japanese_ci	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+cp932_japanese_ci
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 CREATE TABLE t1 AS
 SELECT 10 AS a, REPEAT('a',20) AS b, REPEAT('a',8) AS c, REPEAT('a',8) AS d;
 ALTER TABLE t1 ADD PRIMARY KEY(a), ADD KEY(b);
@@ -11445,6 +11462,23 @@ cp932_bin	6109
 cp932_bin	61
 cp932_bin	6120
 drop table t1;
+#
+# MDEV-5453 Assertion `src' fails in my_strnxfrm_unicode on GROUP BY MID(..) WITH ROLLUP
+#
+SELECT @@collation_connection;
+@@collation_connection
+cp932_bin
+CREATE TABLE t1 (i INT) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1),(2);
+SELECT * FROM t1 GROUP BY MID(CURRENT_USER,0) WITH ROLLUP;
+i
+1
+1
+SELECT * FROM t1 GROUP BY MID('test',0) WITH ROLLUP;
+i
+1
+1
+DROP TABLE t1;
 CREATE TABLE t1 AS
 SELECT 10 AS a, REPEAT('a',20) AS b, REPEAT('a',8) AS c, REPEAT('a',8) AS d;
 ALTER TABLE t1 ADD PRIMARY KEY(a), ADD KEY(b);

strings/ctype-utf8.c

@@ -2101,7 +2101,7 @@ my_strnxfrm_unicode(CHARSET_INFO *cs,
   const uchar *se = src + srclen;
   MY_UNICASE_INFO * const*uni_plane= (cs->state & MY_CS_BINSORT) ?
                                       NULL : cs->caseinfo;
-  DBUG_ASSERT(src);
+  DBUG_ASSERT(!srclen || src);
   
   while (dst < de_beg)
   {
@@ -2145,7 +2145,7 @@ my_strnxfrm_unicode_full_bin(CHARSET_INFO *cs,
   const uchar *se = src + srclen;
 
   LINT_INIT(wc);
-  DBUG_ASSERT(src);
+  DBUG_ASSERT(!srclen || src);
   DBUG_ASSERT(cs->state & MY_CS_BINSORT);
 
   while (dst < de_beg)