diff --git a/mysql-test/r/sp-error.result b/mysql-test/r/sp-error.result
index bf36b4796b9..63401845f23 100644
--- a/mysql-test/r/sp-error.result
+++ b/mysql-test/r/sp-error.result
@@ -1181,3 +1181,8 @@ show authors;
 return 42;
 end|
 ERROR 0A000: Not allowed to return a result set from a function
+drop function if exists bug20701|
+create function bug20701() returns varchar(25) binary return "test"|
+ERROR 42000: This version of MySQL doesn't yet support 'return value collation'
+create function bug20701() returns varchar(25) return "test"|
+drop function bug20701|
diff --git a/mysql-test/r/sp.result b/mysql-test/r/sp.result
index 3ef1066ecda..e51ebaa4e94 100644
--- a/mysql-test/r/sp.result
+++ b/mysql-test/r/sp.result
@@ -3620,12 +3620,18 @@ call bug11333(10)|
 drop procedure bug11333|
 drop table t3|
 drop function if exists bug9048|
-create function bug9048(f1 char binary) returns char binary
+create function bug9048(f1 char binary) returns char
 begin
 set f1= concat( 'hello', f1 );
 return f1;
 end|
 drop function bug9048|
+create function bug9048(f1 char binary) returns char binary
+begin
+set f1= concat( 'hello', f1 );
+return f1;
+end|
+ERROR 42000: This version of MySQL doesn't yet support 'return value collation'
 drop procedure if exists bug12849_1|
 create procedure bug12849_1(inout x char) select x into x|
 set @var='a'|
@@ -4074,7 +4080,7 @@ select res;
 end|
 create table t3 (a int)|
 insert into t3 values (0)|
-create view v1 as select a from t3;
+create view v1 as select a from t3|
 create procedure bug10100pt(level int, lim int)
 begin
 if level < lim then
@@ -4095,7 +4101,7 @@ else
 select * from v1;
 end if;
 end|
-prepare stmt2 from "select * from t3;";
+prepare stmt2 from "select * from t3;"|
 create procedure bug10100pd(level int, lim int)
 begin
 if level < lim then
@@ -4465,7 +4471,7 @@ Error	1347	'test.v1' is not BASE TABLE
 Error	1347	'test.v1' is not BASE TABLE
 Error	1347	'test.v1' is not BASE TABLE
 drop procedure bug13012|
-drop view v1;
+drop view v1|
 select * from t1 order by data|
 id	data
 aa	0
diff --git a/mysql-test/t/sp-error.test b/mysql-test/t/sp-error.test
index d370cb3037c..73a64b6feeb 100644
--- a/mysql-test/t/sp-error.test
+++ b/mysql-test/t/sp-error.test
@@ -1728,10 +1728,28 @@ begin
   return 42;
 end|
 
+#
+# BUG#20701: BINARY keyword should be forbidden in stored routines
+#
+--disable_warnings
+drop function if exists bug20701|
+--enable_warnings
+#
+# This was disabled in 5.1.12. See bug #20701
+# When collation support in SP is implemented, then this test should
+# be removed.
+#
+--error ER_NOT_SUPPORTED_YET
+create function bug20701() returns varchar(25) binary return "test"|
+create function bug20701() returns varchar(25) return "test"|
+drop function bug20701|
+
 #
 # BUG#NNNN: New bug synopsis
 #
 #--disable_warnings
 #drop procedure if exists bugNNNN|
+#drop function if exists bugNNNN|
 #--enable_warnings
 #create procedure bugNNNN...
+#create function bugNNNN...
diff --git a/mysql-test/t/sp.test b/mysql-test/t/sp.test
index fcf179d3e8f..6ae7319e433 100644
--- a/mysql-test/t/sp.test
+++ b/mysql-test/t/sp.test
@@ -4381,12 +4381,23 @@ drop table t3|
 --disable_warnings
 drop function if exists bug9048|
 --enable_warnings
-create function bug9048(f1 char binary) returns char binary
+create function bug9048(f1 char binary) returns char
 begin
   set f1= concat( 'hello', f1 );
   return f1;
 end|
 drop function bug9048|
+#
+# This was disabled in 5.1.12. See bug #20701
+# When collation support in SP is implemented, then this test should
+# be removed.
+#
+--error ER_NOT_SUPPORTED_YET
+create function bug9048(f1 char binary) returns char binary
+begin
+  set f1= concat( 'hello', f1 );
+  return f1;
+end|
 
 # Bug #12849 Stored Procedure: Crash on procedure call with CHAR type
 # 'INOUT' parameter
@@ -4940,7 +4951,7 @@ end|
 # a procedure which use tables and recursion
 create table t3 (a int)|
 insert into t3 values (0)|
-create view v1 as select a from t3;
+create view v1 as select a from t3|
 create procedure bug10100pt(level int, lim int)
 begin
   if level < lim then
@@ -4963,7 +4974,7 @@ begin
   end if;
 end|
 # dynamic sql & recursion
-prepare stmt2 from "select * from t3;";
+prepare stmt2 from "select * from t3;"|
 create procedure bug10100pd(level int, lim int)
 begin
   if level < lim then
@@ -5258,7 +5269,7 @@ call bug13012()|
 call bug13012()|
 call bug13012()|
 drop procedure bug13012|
-drop view v1;
+drop view v1|
 select * from t1 order by data|
 
 #
diff --git a/sql/sql_yacc.yy b/sql/sql_yacc.yy
index ff422c4418c..d94281ed9cc 100644
--- a/sql/sql_yacc.yy
+++ b/sql/sql_yacc.yy
@@ -1672,6 +1672,17 @@ create_function_tail:
 	  {
 	    LEX *lex= Lex;
 	    sp_head *sp= lex->sphead;
+            /*
+              This was disabled in 5.1.12. See bug #20701
+              When collation support in SP is implemented, then this test
+              should be removed.
+            */
+            if (($8 == FIELD_TYPE_STRING || $8 == MYSQL_TYPE_VARCHAR)
+                && (lex->type & BINCMP_FLAG))
+            {
+              my_error(ER_NOT_SUPPORTED_YET, MYF(0), "return value collation");
+              YYABORT;
+            }
 
             if (sp->fill_field_definition(YYTHD, lex,
                                           (enum enum_field_types) $8,