Bug#11752408 - 43593: DUMP/BACKUP/RESTORE/UPGRADE TOOLS FAILS BECAUSE OF UTF8_GENERAL_CI

Introducing new collations:
utf8_general_mysql500_ci and ucs2_general_mysql500_ci,
to reproduce behaviour of utf8_general_ci and ucs2_general_ci
from mysql-5.1.23 (and earlier).

The collations are added to simplify upgrade from mysql-5.1.23 and earlier.

Note: The patch does not make new server start over old data automatically.
Some manual upgrade procedures are assumed.

Paul: please get in touch with me to discuss upgrade procedures
when documenting this bug.

modified:
  include/m_ctype.h
  mysql-test/r/ctype_utf8.result
  mysql-test/t/ctype_utf8.test
  mysys/charset-def.c
  strings/ctype-ucs2.c
  strings/ctype-utf8.c

6 files changed, 282 insertions, 0 deletions

diff --git a/include/m_ctype.h b/include/m_ctype.h
index 3b836dfbaf3..f8d654f387e 100644
--- a/include/m_ctype.h
+++ b/include/m_ctype.h
@@ -50,6 +50,8 @@ typedef struct unicase_info_st
 
 extern MY_UNICASE_INFO *my_unicase_default[256];
 extern MY_UNICASE_INFO *my_unicase_turkish[256];
+extern MY_UNICASE_INFO *my_unicase_mysql500[256];
+
 
 typedef struct uni_ctype_st
 {
@@ -311,11 +313,13 @@ extern CHARSET_INFO my_charset_tis620_bin;
 extern CHARSET_INFO my_charset_ucs2_general_ci;
 extern CHARSET_INFO my_charset_ucs2_bin;
 extern CHARSET_INFO my_charset_ucs2_unicode_ci;
+extern CHARSET_INFO my_charset_ucs2_general_mysql500_ci;
 extern CHARSET_INFO my_charset_ujis_japanese_ci;
 extern CHARSET_INFO my_charset_ujis_bin;
 extern CHARSET_INFO my_charset_utf8_general_ci;
 extern CHARSET_INFO my_charset_utf8_unicode_ci;
 extern CHARSET_INFO my_charset_utf8_bin;
+extern CHARSET_INFO my_charset_utf8_general_mysql500_ci;
 extern CHARSET_INFO my_charset_cp1250_czech_ci;
 extern MYSQL_PLUGIN_IMPORT CHARSET_INFO my_charset_filename;
 
diff --git a/mysql-test/r/ctype_utf8.result b/mysql-test/r/ctype_utf8.result
index b491ce504bf..c540c750f9d 100644
--- a/mysql-test/r/ctype_utf8.result
+++ b/mysql-test/r/ctype_utf8.result
@@ -1928,4 +1928,28 @@ D120
 SELECT HEX(INSERT(_utf8 0xD18FD18E, 2, 1, 0x20));
 HEX(INSERT(_utf8 0xD18FD18E, 2, 1, 0x20))
 D120D18E
+#
+# Bug#11752408 - 43593: DUMP/BACKUP/RESTORE/UPGRADE TOOLS FAILS BECAUSE OF UTF8_GENERAL_CI
+#
+CREATE TABLE t1 (a VARCHAR(10) CHARACTER SET utf8 COLLATE utf8_general_mysql500_ci);
+INSERT INTO t1 VALUES ('a'),('r'),('s'),(_latin1 0xDF),(_latin1 0xF7),('t'),('z');
+SELECT * FROM t1 ORDER BY a;
+a
+a
+r
+s
+t
+z
+ß
+÷
+SELECT a, COUNT(*) FROM t1 GROUP BY a;
+a	COUNT(*)
+a	1
+r	1
+s	1
+t	1
+z	1
+ß	1
+÷	1
+DROP TABLE t1;
 End of 5.1 tests
diff --git a/mysql-test/t/ctype_utf8.test b/mysql-test/t/ctype_utf8.test
index 8e9f09d1e56..545afbbcf6c 100644
--- a/mysql-test/t/ctype_utf8.test
+++ b/mysql-test/t/ctype_utf8.test
@@ -1484,5 +1484,13 @@ SELECT HEX(LPAD(_utf8 0xD18F, 3, 0x20));
 SELECT HEX(INSERT(_utf8 0xD18F, 2, 1, 0x20));
 SELECT HEX(INSERT(_utf8 0xD18FD18E, 2, 1, 0x20));
 
+--echo #
+--echo # Bug#11752408 - 43593: DUMP/BACKUP/RESTORE/UPGRADE TOOLS FAILS BECAUSE OF UTF8_GENERAL_CI
+--echo #
+CREATE TABLE t1 (a VARCHAR(10) CHARACTER SET utf8 COLLATE utf8_general_mysql500_ci);
+INSERT INTO t1 VALUES ('a'),('r'),('s'),(_latin1 0xDF),(_latin1 0xF7),('t'),('z');
+SELECT * FROM t1 ORDER BY a;
+SELECT a, COUNT(*) FROM t1 GROUP BY a;
+DROP TABLE t1;
 
 --echo End of 5.1 tests
diff --git a/mysys/charset-def.c b/mysys/charset-def.c
index 63bbceef29b..8adef3eb72e 100644
--- a/mysys/charset-def.c
+++ b/mysys/charset-def.c
@@ -132,6 +132,7 @@ my_bool init_compiled_charsets(myf flags __attribute__((unused)))
 #ifdef HAVE_CHARSET_ucs2
   add_compiled_collation(&my_charset_ucs2_general_ci);
   add_compiled_collation(&my_charset_ucs2_bin);
+  add_compiled_collation(&my_charset_ucs2_general_mysql500_ci);
 #ifdef HAVE_UCA_COLLATIONS
   add_compiled_collation(&my_charset_ucs2_unicode_ci);
   add_compiled_collation(&my_charset_ucs2_icelandic_uca_ci);
@@ -163,6 +164,7 @@ my_bool init_compiled_charsets(myf flags __attribute__((unused)))
 #ifdef HAVE_CHARSET_utf8
   add_compiled_collation(&my_charset_utf8_general_ci);
   add_compiled_collation(&my_charset_utf8_bin);
+  add_compiled_collation(&my_charset_utf8_general_mysql500_ci);
 #ifdef HAVE_UTF8_GENERAL_CS
   add_compiled_collation(&my_charset_utf8_general_cs);
 #endif
diff --git a/strings/ctype-ucs2.c b/strings/ctype-ucs2.c
index 4fceb1a8c71..4b6fc7ccc10 100644
--- a/strings/ctype-ucs2.c
+++ b/strings/ctype-ucs2.c
@@ -1732,6 +1732,40 @@ CHARSET_INFO my_charset_ucs2_general_ci=
     &my_collation_ucs2_general_ci_handler
 };
 
+
+CHARSET_INFO my_charset_ucs2_general_mysql500_ci=
+{
+  159, 0, 0,                                       /* number           */
+  MY_CS_COMPILED|MY_CS_STRNXFRM|MY_CS_UNICODE,     /* state */
+  "ucs2",                                          /* cs name          */
+  "ucs2_general_mysql500_ci",                      /* name             */
+  "",                                              /* comment          */
+  NULL,                                            /* tailoring        */
+  ctype_ucs2,                                      /* ctype            */
+  to_lower_ucs2,                                   /* to_lower         */
+  to_upper_ucs2,                                   /* to_upper         */
+  to_upper_ucs2,                                   /* sort_order       */
+  NULL,                                            /* contractions     */
+  NULL,                                            /* sort_order_big   */
+  NULL,                                            /* tab_to_uni       */
+  NULL,                                            /* tab_from_uni     */
+  my_unicase_mysql500,                             /* caseinfo         */
+  NULL,                                            /* state_map        */
+  NULL,                                            /* ident_map        */
+  1,                                               /* strxfrm_multiply */
+  1,                                               /* caseup_multiply  */
+  1,                                               /* casedn_multiply  */
+  2,                                               /* mbminlen         */
+  2,                                               /* mbmaxlen         */
+  0,                                               /* min_sort_char    */
+  0xFFFF,                                          /* max_sort_char    */
+  ' ',                                             /* pad char         */
+  0,                          /* escape_with_backslash_is_dangerous    */
+  &my_charset_ucs2_handler,
+  &my_collation_ucs2_general_ci_handler
+};
+
+
 CHARSET_INFO my_charset_ucs2_bin=
 {
     90,0,0,		/* number       */
diff --git a/strings/ctype-utf8.c b/strings/ctype-utf8.c
index 264b79dca63..1af08ded62b 100644
--- a/strings/ctype-utf8.c
+++ b/strings/ctype-utf8.c
@@ -177,6 +177,141 @@ static MY_UNICASE_INFO plane00[]={
 };
 
 
+/*
+  Almost similar to plane00, but maps sorting order
+  for U+00DF to 0x00DF instead of 0x0053.
+*/
+static MY_UNICASE_INFO plane00_mysql500[]={
+  {0x0000,0x0000,0x0000},  {0x0001,0x0001,0x0001},
+  {0x0002,0x0002,0x0002},  {0x0003,0x0003,0x0003},
+  {0x0004,0x0004,0x0004},  {0x0005,0x0005,0x0005},
+  {0x0006,0x0006,0x0006},  {0x0007,0x0007,0x0007},
+  {0x0008,0x0008,0x0008},  {0x0009,0x0009,0x0009},
+  {0x000A,0x000A,0x000A},  {0x000B,0x000B,0x000B},
+  {0x000C,0x000C,0x000C},  {0x000D,0x000D,0x000D},
+  {0x000E,0x000E,0x000E},  {0x000F,0x000F,0x000F},
+  {0x0010,0x0010,0x0010},  {0x0011,0x0011,0x0011},
+  {0x0012,0x0012,0x0012},  {0x0013,0x0013,0x0013},
+  {0x0014,0x0014,0x0014},  {0x0015,0x0015,0x0015},
+  {0x0016,0x0016,0x0016},  {0x0017,0x0017,0x0017},
+  {0x0018,0x0018,0x0018},  {0x0019,0x0019,0x0019},
+  {0x001A,0x001A,0x001A},  {0x001B,0x001B,0x001B},
+  {0x001C,0x001C,0x001C},  {0x001D,0x001D,0x001D},
+  {0x001E,0x001E,0x001E},  {0x001F,0x001F,0x001F},
+  {0x0020,0x0020,0x0020},  {0x0021,0x0021,0x0021},
+  {0x0022,0x0022,0x0022},  {0x0023,0x0023,0x0023},
+  {0x0024,0x0024,0x0024},  {0x0025,0x0025,0x0025},
+  {0x0026,0x0026,0x0026},  {0x0027,0x0027,0x0027},
+  {0x0028,0x0028,0x0028},  {0x0029,0x0029,0x0029},
+  {0x002A,0x002A,0x002A},  {0x002B,0x002B,0x002B},
+  {0x002C,0x002C,0x002C},  {0x002D,0x002D,0x002D},
+  {0x002E,0x002E,0x002E},  {0x002F,0x002F,0x002F},
+  {0x0030,0x0030,0x0030},  {0x0031,0x0031,0x0031},
+  {0x0032,0x0032,0x0032},  {0x0033,0x0033,0x0033},
+  {0x0034,0x0034,0x0034},  {0x0035,0x0035,0x0035},
+  {0x0036,0x0036,0x0036},  {0x0037,0x0037,0x0037},
+  {0x0038,0x0038,0x0038},  {0x0039,0x0039,0x0039},
+  {0x003A,0x003A,0x003A},  {0x003B,0x003B,0x003B},
+  {0x003C,0x003C,0x003C},  {0x003D,0x003D,0x003D},
+  {0x003E,0x003E,0x003E},  {0x003F,0x003F,0x003F},
+  {0x0040,0x0040,0x0040},  {0x0041,0x0061,0x0041},
+  {0x0042,0x0062,0x0042},  {0x0043,0x0063,0x0043},
+  {0x0044,0x0064,0x0044},  {0x0045,0x0065,0x0045},
+  {0x0046,0x0066,0x0046},  {0x0047,0x0067,0x0047},
+  {0x0048,0x0068,0x0048},  {0x0049,0x0069,0x0049},
+  {0x004A,0x006A,0x004A},  {0x004B,0x006B,0x004B},
+  {0x004C,0x006C,0x004C},  {0x004D,0x006D,0x004D},
+  {0x004E,0x006E,0x004E},  {0x004F,0x006F,0x004F},
+  {0x0050,0x0070,0x0050},  {0x0051,0x0071,0x0051},
+  {0x0052,0x0072,0x0052},  {0x0053,0x0073,0x0053},
+  {0x0054,0x0074,0x0054},  {0x0055,0x0075,0x0055},
+  {0x0056,0x0076,0x0056},  {0x0057,0x0077,0x0057},
+  {0x0058,0x0078,0x0058},  {0x0059,0x0079,0x0059},
+  {0x005A,0x007A,0x005A},  {0x005B,0x005B,0x005B},
+  {0x005C,0x005C,0x005C},  {0x005D,0x005D,0x005D},
+  {0x005E,0x005E,0x005E},  {0x005F,0x005F,0x005F},
+  {0x0060,0x0060,0x0060},  {0x0041,0x0061,0x0041},
+  {0x0042,0x0062,0x0042},  {0x0043,0x0063,0x0043},
+  {0x0044,0x0064,0x0044},  {0x0045,0x0065,0x0045},
+  {0x0046,0x0066,0x0046},  {0x0047,0x0067,0x0047},
+  {0x0048,0x0068,0x0048},  {0x0049,0x0069,0x0049},
+  {0x004A,0x006A,0x004A},  {0x004B,0x006B,0x004B},
+  {0x004C,0x006C,0x004C},  {0x004D,0x006D,0x004D},
+  {0x004E,0x006E,0x004E},  {0x004F,0x006F,0x004F},
+  {0x0050,0x0070,0x0050},  {0x0051,0x0071,0x0051},
+  {0x0052,0x0072,0x0052},  {0x0053,0x0073,0x0053},
+  {0x0054,0x0074,0x0054},  {0x0055,0x0075,0x0055},
+  {0x0056,0x0076,0x0056},  {0x0057,0x0077,0x0057},
+  {0x0058,0x0078,0x0058},  {0x0059,0x0079,0x0059},
+  {0x005A,0x007A,0x005A},  {0x007B,0x007B,0x007B},
+  {0x007C,0x007C,0x007C},  {0x007D,0x007D,0x007D},
+  {0x007E,0x007E,0x007E},  {0x007F,0x007F,0x007F},
+  {0x0080,0x0080,0x0080},  {0x0081,0x0081,0x0081},
+  {0x0082,0x0082,0x0082},  {0x0083,0x0083,0x0083},
+  {0x0084,0x0084,0x0084},  {0x0085,0x0085,0x0085},
+  {0x0086,0x0086,0x0086},  {0x0087,0x0087,0x0087},
+  {0x0088,0x0088,0x0088},  {0x0089,0x0089,0x0089},
+  {0x008A,0x008A,0x008A},  {0x008B,0x008B,0x008B},
+  {0x008C,0x008C,0x008C},  {0x008D,0x008D,0x008D},
+  {0x008E,0x008E,0x008E},  {0x008F,0x008F,0x008F},
+  {0x0090,0x0090,0x0090},  {0x0091,0x0091,0x0091},
+  {0x0092,0x0092,0x0092},  {0x0093,0x0093,0x0093},
+  {0x0094,0x0094,0x0094},  {0x0095,0x0095,0x0095},
+  {0x0096,0x0096,0x0096},  {0x0097,0x0097,0x0097},
+  {0x0098,0x0098,0x0098},  {0x0099,0x0099,0x0099},
+  {0x009A,0x009A,0x009A},  {0x009B,0x009B,0x009B},
+  {0x009C,0x009C,0x009C},  {0x009D,0x009D,0x009D},
+  {0x009E,0x009E,0x009E},  {0x009F,0x009F,0x009F},
+  {0x00A0,0x00A0,0x00A0},  {0x00A1,0x00A1,0x00A1},
+  {0x00A2,0x00A2,0x00A2},  {0x00A3,0x00A3,0x00A3},
+  {0x00A4,0x00A4,0x00A4},  {0x00A5,0x00A5,0x00A5},
+  {0x00A6,0x00A6,0x00A6},  {0x00A7,0x00A7,0x00A7},
+  {0x00A8,0x00A8,0x00A8},  {0x00A9,0x00A9,0x00A9},
+  {0x00AA,0x00AA,0x00AA},  {0x00AB,0x00AB,0x00AB},
+  {0x00AC,0x00AC,0x00AC},  {0x00AD,0x00AD,0x00AD},
+  {0x00AE,0x00AE,0x00AE},  {0x00AF,0x00AF,0x00AF},
+  {0x00B0,0x00B0,0x00B0},  {0x00B1,0x00B1,0x00B1},
+  {0x00B2,0x00B2,0x00B2},  {0x00B3,0x00B3,0x00B3},
+  {0x00B4,0x00B4,0x00B4},  {0x039C,0x00B5,0x039C},
+  {0x00B6,0x00B6,0x00B6},  {0x00B7,0x00B7,0x00B7},
+  {0x00B8,0x00B8,0x00B8},  {0x00B9,0x00B9,0x00B9},
+  {0x00BA,0x00BA,0x00BA},  {0x00BB,0x00BB,0x00BB},
+  {0x00BC,0x00BC,0x00BC},  {0x00BD,0x00BD,0x00BD},
+  {0x00BE,0x00BE,0x00BE},  {0x00BF,0x00BF,0x00BF},
+  {0x00C0,0x00E0,0x0041},  {0x00C1,0x00E1,0x0041},
+  {0x00C2,0x00E2,0x0041},  {0x00C3,0x00E3,0x0041},
+  {0x00C4,0x00E4,0x0041},  {0x00C5,0x00E5,0x0041},
+  {0x00C6,0x00E6,0x00C6},  {0x00C7,0x00E7,0x0043},
+  {0x00C8,0x00E8,0x0045},  {0x00C9,0x00E9,0x0045},
+  {0x00CA,0x00EA,0x0045},  {0x00CB,0x00EB,0x0045},
+  {0x00CC,0x00EC,0x0049},  {0x00CD,0x00ED,0x0049},
+  {0x00CE,0x00EE,0x0049},  {0x00CF,0x00EF,0x0049},
+  {0x00D0,0x00F0,0x00D0},  {0x00D1,0x00F1,0x004E},
+  {0x00D2,0x00F2,0x004F},  {0x00D3,0x00F3,0x004F},
+  {0x00D4,0x00F4,0x004F},  {0x00D5,0x00F5,0x004F},
+  {0x00D6,0x00F6,0x004F},  {0x00D7,0x00D7,0x00D7},
+  {0x00D8,0x00F8,0x00D8},  {0x00D9,0x00F9,0x0055},
+  {0x00DA,0x00FA,0x0055},  {0x00DB,0x00FB,0x0055},
+  {0x00DC,0x00FC,0x0055},  {0x00DD,0x00FD,0x0059},
+  {0x00DE,0x00FE,0x00DE},  {0x00DF,0x00DF,0x00DF},
+  {0x00C0,0x00E0,0x0041},  {0x00C1,0x00E1,0x0041},
+  {0x00C2,0x00E2,0x0041},  {0x00C3,0x00E3,0x0041},
+  {0x00C4,0x00E4,0x0041},  {0x00C5,0x00E5,0x0041},
+  {0x00C6,0x00E6,0x00C6},  {0x00C7,0x00E7,0x0043},
+  {0x00C8,0x00E8,0x0045},  {0x00C9,0x00E9,0x0045},
+  {0x00CA,0x00EA,0x0045},  {0x00CB,0x00EB,0x0045},
+  {0x00CC,0x00EC,0x0049},  {0x00CD,0x00ED,0x0049},
+  {0x00CE,0x00EE,0x0049},  {0x00CF,0x00EF,0x0049},
+  {0x00D0,0x00F0,0x00D0},  {0x00D1,0x00F1,0x004E},
+  {0x00D2,0x00F2,0x004F},  {0x00D3,0x00F3,0x004F},
+  {0x00D4,0x00F4,0x004F},  {0x00D5,0x00F5,0x004F},
+  {0x00D6,0x00F6,0x004F},  {0x00F7,0x00F7,0x00F7},
+  {0x00D8,0x00F8,0x00D8},  {0x00D9,0x00F9,0x0055},
+  {0x00DA,0x00FA,0x0055},  {0x00DB,0x00FB,0x0055},
+  {0x00DC,0x00FC,0x0055},  {0x00DD,0x00FD,0x0059},
+  {0x00DE,0x00FE,0x00DE},  {0x0178,0x00FF,0x0059}
+};
+
 
 static MY_UNICASE_INFO plane01[]={
   {0x0100,0x0101,0x0041},  {0x0100,0x0101,0x0041},
@@ -1526,6 +1661,47 @@ MY_UNICASE_INFO *my_unicase_default[256]={
 
 
 /*
+  Reproduce old utf8_general_ci behaviour before we fixed Bug#27877.
+*/
+MY_UNICASE_INFO *my_unicase_mysql500[256]={
+ plane00_mysql500,
+          plane01, plane02, plane03, plane04, plane05,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL, plane1E, plane1F,
+    NULL, plane21,    NULL,    NULL, plane24,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,
+    NULL,    NULL,    NULL,    NULL,    NULL,    NULL,    NULL, planeFF
+
+};
+
+
+/*
   Turkish lower/upper mapping:
   1. LOWER(0x0049 LATIN CAPITAL LETTER I) -> 
            0x0131 LATIN SMALL   LETTER DOTLESS I
@@ -2720,6 +2896,39 @@ CHARSET_INFO my_charset_utf8_general_ci=
 };
 
 
+CHARSET_INFO my_charset_utf8_general_mysql500_ci=
+{
+  223,0,0,                                      /* number           */
+  MY_CS_COMPILED|MY_CS_STRNXFRM|MY_CS_UNICODE,  /* state            */
+  "utf8",                                       /* cs name          */
+  "utf8_general_mysql500_ci",                   /* name             */
+  "",                                           /* comment          */
+  NULL,                                         /* tailoring        */
+  ctype_utf8,                                   /* ctype            */
+  to_lower_utf8,                                /* to_lower         */
+  to_upper_utf8,                                /* to_upper         */
+  to_upper_utf8,                                /* sort_order       */
+  NULL,                                         /* contractions     */
+  NULL,                                         /* sort_order_big   */
+  NULL,                                         /* tab_to_uni       */
+  NULL,                                         /* tab_from_uni     */
+  my_unicase_mysql500,                          /* caseinfo         */
+  NULL,                                         /* state_map        */
+  NULL,                                         /* ident_map        */
+  1,                                            /* strxfrm_multiply */
+  1,                                            /* caseup_multiply  */
+  1,                                            /* casedn_multiply  */
+  1,                                            /* mbminlen         */
+  3,                                            /* mbmaxlen         */
+  0,                                            /* min_sort_char    */
+  0xFFFF,                                       /* max_sort_char    */
+  ' ',                                          /* pad char         */
+  0,                          /* escape_with_backslash_is_dangerous */
+  &my_charset_utf8_handler,
+  &my_collation_ci_handler
+};
+
+
 CHARSET_INFO my_charset_utf8_bin=
 {
     83,0,0,             /* number       */
@@ -4231,6 +4440,7 @@ CHARSET_INFO my_charset_filename=
     &my_collation_filename_handler
 };
 
+
 #ifdef MY_TEST_UTF8
 #include <stdio.h>