From ee8fd1e3b5ad0581ef3ce0e1a528b532bd77ddad Mon Sep 17 00:00:00 2001
From: "bar@mysql.com" <>
Date: Fri, 23 Jun 2006 18:00:49 +0500
Subject: [PATCH] Bug#15276: MySQL ignores collation-server     Problem:    
 mysqld --collation-server=xxx --character-set-server=yyy     didn't work as
 expected: collation_server was set not to xxx,     but to the default
 collation of character set "yyy".

    With different argument order it worked as expected:
    mysqld --character-set-server=yyy --collation-server=yyy

    Fix:
    initializate default_collation_name to 0
    when processing --character-set-server
    only if --collation-server has not been specified
    in command line.
---
 mysql-test/r/ctype_ucs2_def.result     | 3 +++
 mysql-test/t/ctype_ucs2_def-master.opt | 2 +-
 mysql-test/t/ctype_ucs2_def.test       | 5 +++++
 sql/mysqld.cc                          | 6 ++++--
 4 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/mysql-test/r/ctype_ucs2_def.result b/mysql-test/r/ctype_ucs2_def.result
index 897dbac251c..2f9dc4ae616 100644
--- a/mysql-test/r/ctype_ucs2_def.result
+++ b/mysql-test/r/ctype_ucs2_def.result
@@ -1,3 +1,6 @@
+show variables like 'collation_server';
+Variable_name	Value
+collation_server	ucs2_unicode_ci
 show variables like "%character_set_ser%";
 Variable_name	Value
 character_set_server	ucs2
diff --git a/mysql-test/t/ctype_ucs2_def-master.opt b/mysql-test/t/ctype_ucs2_def-master.opt
index 1f884ff1d67..a0b5b061860 100644
--- a/mysql-test/t/ctype_ucs2_def-master.opt
+++ b/mysql-test/t/ctype_ucs2_def-master.opt
@@ -1 +1 @@
---default-character-set=ucs2 --default-collation=ucs2_unicode_ci
+--default-collation=ucs2_unicode_ci --default-character-set=ucs2
diff --git a/mysql-test/t/ctype_ucs2_def.test b/mysql-test/t/ctype_ucs2_def.test
index fb174d551cf..00f636d79dc 100644
--- a/mysql-test/t/ctype_ucs2_def.test
+++ b/mysql-test/t/ctype_ucs2_def.test
@@ -1,3 +1,8 @@
+#
+# MySQL Bug#15276: MySQL ignores collation-server
+#
+show variables like 'collation_server';
+
 #
 # Bug#18004 Connecting crashes server when default charset is UCS2
 #
diff --git a/sql/mysqld.cc b/sql/mysqld.cc
index d7a38d6b715..2feead9e3bd 100644
--- a/sql/mysqld.cc
+++ b/sql/mysqld.cc
@@ -323,6 +323,7 @@ static char *default_character_set_name;
 static char *character_set_filesystem_name;
 static char *my_bind_addr_str;
 static char *default_collation_name;
+static char compiled_default_collation_name[]= MYSQL_DEFAULT_COLLATION_NAME;
 static char mysql_data_home_buff[2];
 static struct passwd *user_info;
 static I_List<THD> thread_cache;
@@ -6389,7 +6390,7 @@ static void mysql_init_variables(void)
   /* Variables in libraries */
   charsets_dir= 0;
   default_character_set_name= (char*) MYSQL_DEFAULT_CHARSET_NAME;
-  default_collation_name= (char*) MYSQL_DEFAULT_COLLATION_NAME;
+  default_collation_name= compiled_default_collation_name;
   sys_charset_system.value= (char*) system_charset_info->csname;
   character_set_filesystem_name= (char*) "binary";
 
@@ -6551,7 +6552,8 @@ get_one_option(int optid, const struct my_option *opt __attribute__((unused)),
     strmake(mysql_home,argument,sizeof(mysql_home)-1);
     break;
   case 'C':
-    default_collation_name= 0;
+    if (default_collation_name == compiled_default_collation_name)
+      default_collation_name= 0;
     break;
   case 'l':
     opt_log=1;