Fix for the QUOTE() function.

BitKeeper/etc/logging_ok

@@ -61,6 +61,7 @@ paul@teton.kitebird.com
 pem@mysql.com
 peter@linux.local
 peter@mysql.com
+ram@mysql.r18.ru
 ram@ram.(none)
 ranger@regul.home.lan
 root@x3.internalnet

mysql-test/r/func_str.result

@@ -155,6 +155,9 @@ quote(concat('abc\'', '\\cba'))
 select quote(1/0), quote('\0\Z');
 quote(1/0)	quote('\0\Z')
 NULL	'\0\Z'
+select length(quote(concat(char(0),"test")));
+length(quote(concat(char(0),"test")))
+8
 select reverse("");
 reverse("")
 

mysql-test/t/func_str.test

@@ -64,6 +64,7 @@ select decode(encode("abcdef","monty"),"monty")="abcdef";
 select quote('\'\"\\test');
 select quote(concat('abc\'', '\\cba'));
 select quote(1/0), quote('\0\Z');
+select length(quote(concat(char(0),"test")));
 
 #
 # Wrong usage of functions

sql/item_strfunc.cc

@@ -2134,7 +2134,7 @@ String *Item_func_quote::val_str(String *str)
   */
   to= (char*) str->ptr() + new_length - 1;
   *to--= '\'';
-  for (start= (char*) arg->ptr() ; end-- != start; to--)
+  for (start= (char*) arg->ptr(),end= start + arg_length; end-- != start; to--)
   {
     /*
       We can't use the bitmask here as we want to replace \O and ^Z with 0