a fix (bug #10650: Bit literal case sensitivity).

mysql-test/r/select.result

@@ -2699,3 +2699,6 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	3	
 1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	5	Using where
 DROP TABLE t1,t2;
+select x'10' + 0, X'10' + 0, b'10' + 0, B'10' + 0;
+x'10' + 0	X'10' + 0	b'10' + 0	B'10' + 0
+16	16	2	2

mysql-test/t/select.test

@@ -2271,3 +2271,8 @@ EXPLAIN SELECT t1.a FROM t1 INNER JOIN t2 ON t1.a=t2.a;
 
 DROP TABLE t1,t2;
 
+#
+# Bug #10650
+#
+
+select x'10' + 0, X'10' + 0, b'10' + 0, B'10' + 0;

mysys/charset.c

@@ -97,7 +97,7 @@ static my_bool init_state_maps(CHARSET_INFO *cs)
 
   /* Special handling of hex and binary strings */
   state_map[(uchar)'x']= state_map[(uchar)'X']= (uchar) MY_LEX_IDENT_OR_HEX;
-  state_map[(uchar)'b']= state_map[(uchar)'b']= (uchar) MY_LEX_IDENT_OR_BIN;
+  state_map[(uchar)'b']= state_map[(uchar)'B']= (uchar) MY_LEX_IDENT_OR_BIN;
   state_map[(uchar)'n']= state_map[(uchar)'N']= (uchar) MY_LEX_IDENT_OR_NCHAR;
   return 0;
 }