Bug #26199 Replication Failure on Slave when using stored procs with bit-type parameters.

The value of the actual argument of BIT-type-arg stored procedure was binlogged as non-escaped
sequence of bytes corresponding to internal representation of the bit value.

The patch enforces binlogging of the bit-argument as a valid literal: prefixing the quoted bytes
sequence with _binary.
Note, that behaviour of Item_field::var_str for field_type() of MYSQL_TYPE_BIT is exceptional
in that the returned string contains the binary representation even though result_type() of
the item is INT_RESULT.

mysql-test/r/rpl_sp_effects.result

@@ -213,3 +213,44 @@ drop table t1;
 drop function f1;
 drop function f2;
 drop procedure p1;
+create table t2 (b BIT(7));
+create procedure sp_bug26199(bitvalue BIT(7))
+begin
+insert into t2 set b = bitvalue;
+end //
+create function sf_bug26199(b BIT(7)) returns int
+begin
+insert into t2 values(b);
+return 0;
+end//
+call   sp_bug26199(b'1110');
+call   sp_bug26199('\0');
+select sf_bug26199(b'1111111');
+sf_bug26199(b'1111111')
+0
+select sf_bug26199(b'101111111');
+sf_bug26199(b'101111111')
+0
+Warnings:
+Warning	1264	Out of range value adjusted for column 'b' at row 1
+select sf_bug26199('\'');
+sf_bug26199('\'')
+0
+select hex(b) from t2;
+hex(b)
+E
+0
+7F
+7F
+27
+select hex(b) from t2;
+hex(b)
+E
+0
+7F
+7F
+27
+drop table t2;
+drop procedure sp_bug26199;
+drop function sf_bug26199;
+end of the tests

mysql-test/t/rpl_sp_effects.test

@@ -195,9 +195,60 @@ sync_slave_with_master;
 connection slave;
 select 'slave', a from t1;
 
+#
+# cleanup
+#
+
 connection master;
 drop table t1;
 drop function f1;
 drop function f2;
 drop procedure p1;
 sync_slave_with_master;
+
+#
+# bug#26199 Replication Failure on Slave when using stored procs
+#           with bit-type parameters
+
+connection master;
+
+create table t2 (b BIT(7));
+delimiter //;
+create procedure sp_bug26199(bitvalue BIT(7))
+begin
+  insert into t2 set b = bitvalue;
+end //
+
+create function sf_bug26199(b BIT(7)) returns int
+begin
+  insert into t2 values(b);
+  return 0;
+end//
+
+DELIMITER ;//
+
+
+
+call   sp_bug26199(b'1110');
+call   sp_bug26199('\0');
+select sf_bug26199(b'1111111');
+select sf_bug26199(b'101111111');
+select sf_bug26199('\'');
+select hex(b) from t2;
+
+sync_slave_with_master;
+#connection slave;
+select hex(b) from t2;
+
+#
+# cleanup bug#26199
+#
+connection master;
+drop table t2;
+drop procedure sp_bug26199;
+drop function sf_bug26199;
+
+sync_slave_with_master;
+
+
+--echo end of the tests

sql/sp_head.cc

@@ -100,8 +100,9 @@ sp_get_item_value(THD *thd, Item *item, String *str)
   case REAL_RESULT:
   case INT_RESULT:
   case DECIMAL_RESULT:
+    if (item->field_type() != MYSQL_TYPE_BIT)
       return item->val_str(str);
-
+    else {/* Bit type is handled as binary string */}
   case STRING_RESULT:
     {
       String *result= item->val_str(str);