MDEV-8402 Bug #77473 Truncated data with subquery & UTF8

2 files changed, 73 insertions, 0 deletions

diff --git a/mysql-test/r/ctype_utf8.result b/mysql-test/r/ctype_utf8.result
index 217d3ca26d8..121168c2a2a 100644
--- a/mysql-test/r/ctype_utf8.result
+++ b/mysql-test/r/ctype_utf8.result
@@ -5830,5 +5830,44 @@ OCTET_LENGTH(a)	a
 255	ＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡＡ
 DROP TABLE t1;
 #
+# MDEV-8402 Bug#77473 Bug#21317406 TRUNCATED DATA WITH SUBQUERY & UTF8
+#
+#
+SET NAMES utf8;
+SELECT length(rpad(_utf8 0xD0B1, 65536, _utf8 0xD0B2)) AS data;
+data
+131072
+SELECT length(data) AS len FROM (
+SELECT rpad(_utf8 0xD0B1, 65536, _utf8 0xD0B2) AS data
+) AS sub;
+len
+131072
+SELECT length(rpad(_utf8 0xD0B1, 65535, _utf8 0xD0B2)) AS data;
+data
+131070
+SELECT length(data) AS len FROM (
+SELECT rpad(_utf8 0xD0B1, 65535, _utf8 0xD0B2) AS data
+) AS sub;
+len
+131070
+SELECT length(data) AS len FROM (SELECT REPEAT('ä', 36766) AS data) AS sub;
+len
+73532
+SELECT length(data) AS len FROM (SELECT REPEAT('ä', 36767) AS data) AS sub;
+len
+73534
+SELECT length(data) AS len FROM (SELECT REPEAT('ä', 36778) AS data) AS sub;
+len
+73556
+SELECT length(data) AS len FROM (SELECT REPEAT('ä', 65535) AS data) AS sub;
+len
+131070
+SELECT length(data) AS len FROM (SELECT REPEAT('ä', 65536) AS data) AS sub;
+len
+131072
+SELECT length(data) AS len FROM (SELECT REPEAT('ä', 65537) AS data) AS sub;
+len
+131074
+#
 # End of 5.5 tests
 #
diff --git a/mysql-test/r/ctype_utf8mb4.result b/mysql-test/r/ctype_utf8mb4.result
index 448645ebbae..17a1a2f787e 100644
--- a/mysql-test/r/ctype_utf8mb4.result
+++ b/mysql-test/r/ctype_utf8mb4.result
@@ -2622,6 +2622,40 @@ OCTET_LENGTH(a)	a
 252	😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎😎
 DROP TABLE t1;
 #
+# MDEV-8402 Bug#77473 Bug#21317406 TRUNCATED DATA WITH SUBQUERY & UTF8
+#
+#
+SET NAMES utf8mb4;
+SELECT length(repeat(_utf8mb4 0xE29883, 21844)) AS data;
+data
+65532
+SELECT length(data) AS len
+FROM ( SELECT repeat(_utf8mb4 0xE29883, 21844) AS data ) AS sub;
+len
+65532
+SELECT length(repeat(_utf8mb4 0xE29883, 21846)) AS data;
+data
+65538
+SELECT length(data) AS len
+FROM ( SELECT repeat(_utf8mb4 0xE29883, 21846) AS data ) AS sub;
+len
+65538
+SELECT LENGTH(data) AS len FROM (SELECT REPEAT('☃', 21844) AS data ) AS sub;
+len
+65532
+SELECT LENGTH(data) AS len FROM (SELECT REPEAT('☃', 21845) AS data ) AS sub;
+len
+65535
+SELECT LENGTH(data) AS len FROM (SELECT REPEAT('☃', 21846) AS data ) AS sub;
+len
+65538
+SELECT LENGTH(data) AS len FROM (SELECT REPEAT('☃', 65535) AS data ) AS sub;
+len
+196605
+SELECT LENGTH(data) AS len FROM (SELECT REPEAT('☃', 65536) AS data ) AS sub;
+len
+196608
+#
 # End of 5.5 tests
 #
 #