Merge epotemkin@bk-internal.mysql.com:/home/bk/mysql-5.0-opt

into  moonbone.local:/home/evgen/bk-trees/mysql-5.0-opt

mysql-test/r/udf.result

@@ -194,6 +194,17 @@ DROP FUNCTION sequence;
 DROP FUNCTION lookup;
 DROP FUNCTION reverse_lookup;
 DROP FUNCTION avgcost;
+select * from mysql.func;
+name	ret	dl	type
+CREATE FUNCTION is_const RETURNS STRING SONAME "UDF_EXAMPLE_LIB";
+select IS_const(3);
+IS_const(3)
+const
+drop function IS_const;
+select * from mysql.func;
+name	ret	dl	type
+select is_const(3);
+ERROR 42000: FUNCTION test.is_const does not exist
 CREATE FUNCTION is_const RETURNS STRING SONAME "UDF_EXAMPLE_LIB";
 select
 is_const(3) as const,

mysql-test/t/udf.test

@@ -187,6 +187,23 @@ DROP FUNCTION lookup;
 DROP FUNCTION reverse_lookup;
 DROP FUNCTION avgcost;
 
+#
+# Bug #15439: UDF name case handling forces DELETE FROM mysql.func to remove 
+#             the UDF
+# 
+select * from mysql.func;
+--replace_result $UDF_EXAMPLE_LIB UDF_EXAMPLE_LIB
+eval CREATE FUNCTION is_const RETURNS STRING SONAME "$UDF_EXAMPLE_LIB";
+
+select IS_const(3);
+
+drop function IS_const;
+
+select * from mysql.func;
+
+--error 1305
+select is_const(3);
+
 #
 # Bug#18761: constant expression as UDF parameters not passed in as constant
 #

sql/sql_udf.cc

@@ -536,7 +536,7 @@ int mysql_drop_function(THD *thd,const LEX_STRING *udf_name)
   tables.table_name= tables.alias= (char*) "func";
   if (!(table = open_ltable(thd,&tables,TL_WRITE)))
     goto err;
-  table->field[0]->store(udf_name->str, udf_name->length, system_charset_info);
+  table->field[0]->store(udf->name.str, udf->name.length, &my_charset_bin);
   table->file->extra(HA_EXTRA_RETRIEVE_ALL_COLS);
   if (!table->file->index_read_idx(table->record[0], 0,
 				   (byte*) table->field[0]->ptr,