ctype_utf8.result, ctype_utf8.test:

  Bug#10504: additional test

mysql-test/r/ctype_utf8.result

@@ -1034,6 +1034,12 @@ hex(char(1))
 select char(0xd1,0x8f);
 char(0xd1,0x8f)
 я
+select char(0xd18f);
+char(0xd18f)
+я
+select char(53647);
+char(53647)
+я
 select char(0xff,0x8f);
 char(0xff,0x8f)
 

mysql-test/t/ctype_utf8.test

@@ -871,6 +871,8 @@ set names utf8;
 # correct value
 select hex(char(1));
 select char(0xd1,0x8f);
+select char(0xd18f);
+select char(53647);
 # incorrect value: return with warning
 select char(0xff,0x8f);
 # incorrect value in strict mode: return NULL with "Error" level warning