Auto-merge from mysql-trunk-bugfixing.

******
This patch fixes the following bugs:
  - Bug#5889: Exit handler for a warning doesn't hide the warning in
    trigger
  - Bug#9857: Stored procedures: handler for sqlwarning ignored
  - Bug#23032: Handlers declared in a SP do not handle warnings generated
    in sub-SP
  - Bug#36185: Incorrect precedence for warning and exception handlers

The problem was in the way warnings/errors during stored routine execution
were handled. Prior to this patch the logic was as follows:

  - when a warning/an error happens: if we're executing a stored routine,
    and there is a handler for that warning/error, remember the handler,
    ignore the warning/error and continue execution.

  - after a stored routine instruction is executed: check for a remembered
    handler and activate one (if any).

This logic caused several problems:

  - if one instruction generates several warnings (errors) it's impossible
    to choose the right handler -- a handler for the first generated
    condition was chosen and remembered for activation.

  - mess with handling conditions in scopes different from the current one.

  - not putting generated warnings/errors into Warning Info (Diagnostic
    Area) is against The Standard.

The patch changes the logic as follows:

  - Diagnostic Area is cleared on the beginning of each statement that
    either is able to generate warnings, or is able to work with tables.

  - at the end of a stored routine instruction, Diagnostic Area is left
    intact.

  - Diagnostic Area is checked after each stored routine instruction. If
    an instruction generates several condition, it's now possible to take a
    look at all of them and determine an appropriate handler.

mysql-test/r/signal.result

@@ -1189,6 +1189,8 @@ end $$
 call test_signal() $$
 Caught by SQLSTATE
 Caught by SQLSTATE
+Warnings:
+Warning	1012	Raising a warning
 drop procedure test_signal $$
 create procedure test_signal()
 begin
@@ -1204,6 +1206,8 @@ end $$
 call test_signal() $$
 Caught by number
 Caught by number
+Warnings:
+Warning	1012	Raising a warning
 drop procedure test_signal $$
 create procedure test_signal()
 begin
@@ -1219,6 +1223,8 @@ end $$
 call test_signal() $$
 Caught by SQLWARNING
 Caught by SQLWARNING
+Warnings:
+Warning	1012	Raising a warning
 drop procedure test_signal $$
 create procedure test_signal()
 begin
@@ -1234,6 +1240,8 @@ end $$
 call test_signal() $$
 Caught by SQLSTATE
 Caught by SQLSTATE
+Warnings:
+Error	1012	Raising a not found
 drop procedure test_signal $$
 create procedure test_signal()
 begin
@@ -1249,6 +1257,8 @@ end $$
 call test_signal() $$
 Caught by number
 Caught by number
+Warnings:
+Error	1012	Raising a not found
 drop procedure test_signal $$
 create procedure test_signal()
 begin
@@ -1264,6 +1274,8 @@ end $$
 call test_signal() $$
 Caught by NOT FOUND
 Caught by NOT FOUND
+Warnings:
+Error	1012	Raising a not found
 drop procedure test_signal $$
 create procedure test_signal()
 begin
@@ -1279,6 +1291,8 @@ end $$
 call test_signal() $$
 Caught by SQLSTATE
 Caught by SQLSTATE
+Warnings:
+Error	1012	Raising an error
 drop procedure test_signal $$
 create procedure test_signal()
 begin
@@ -1294,6 +1308,8 @@ end $$
 call test_signal() $$
 Caught by number
 Caught by number
+Warnings:
+Error	1012	Raising an error
 drop procedure test_signal $$
 create procedure test_signal()
 begin
@@ -1309,6 +1325,8 @@ end $$
 call test_signal() $$
 Caught by SQLEXCEPTION
 Caught by SQLEXCEPTION
+Warnings:
+Error	1012	Raising an error
 drop procedure test_signal $$
 #
 # Test where SIGNAL can be used
@@ -1455,6 +1473,7 @@ after RESIGNAL
 after RESIGNAL
 Warnings:
 Warning	1012	Raising a warning
+Warning	1012	Raising a warning
 drop procedure test_resignal $$
 create procedure test_resignal()
 begin
@@ -1509,6 +1528,7 @@ after RESIGNAL
 after RESIGNAL
 Warnings:
 Warning	1264	Out of range value for column 'a' at row 1
+Warning	1264	Out of range value for column 'a' at row 1
 drop procedure test_resignal $$
 create procedure test_resignal()
 begin
@@ -1565,6 +1585,7 @@ before RESIGNAL
 after RESIGNAL
 after RESIGNAL
 Warnings:
+Warning	1012	Raising a warning
 Warning	5555	RESIGNAL of a warning
 drop procedure test_resignal $$
 create procedure test_resignal()
@@ -1625,6 +1646,7 @@ before RESIGNAL
 after RESIGNAL
 after RESIGNAL
 Warnings:
+Warning	1264	Out of range value for column 'a' at row 1
 Warning	5555	RESIGNAL of a warning
 drop procedure test_resignal $$
 create procedure test_resignal()
@@ -2126,6 +2148,9 @@ CALL peter_p2() $$
 ERROR 42000: Hi, I am a useless error message
 show warnings $$
 Level	Code	Message
+Error	1231	Variable 'sql_mode' can't be set to the value of 'NULL'
+Error	1231	Variable 'sql_mode' can't be set to the value of 'NULL'
+Error	9999	Variable 'sql_mode' can't be set to the value of 'NULL'
 Error	9999	Hi, I am a useless error message
 drop procedure peter_p1 $$
 drop procedure peter_p2 $$
@@ -2135,15 +2160,17 @@ DECLARE x CONDITION FOR SQLSTATE '42000';
 DECLARE EXIT HANDLER FOR x
 BEGIN
 SELECT '2';
+SHOW WARNINGS;
 RESIGNAL x SET MYSQL_ERRNO = 9999;
 END;
 BEGIN
 DECLARE EXIT HANDLER FOR x
 BEGIN
 SELECT '1';
+SHOW WARNINGS;
 RESIGNAL x SET
 SCHEMA_NAME = 'test',
-MYSQL_ERRNO= 1231;
+MYSQL_ERRNO= 1232;
 END;
 /* Raises ER_WRONG_VALUE_FOR_VAR : 1231, SQLSTATE 42000 */
 SET @@sql_mode=NULL;
@@ -2156,6 +2183,7 @@ DECLARE x CONDITION for SQLSTATE '42000';
 DECLARE EXIT HANDLER FOR x
 BEGIN
 SELECT '3';
+SHOW WARNINGS;
 RESIGNAL x SET
 MESSAGE_TEXT = 'Hi, I am a useless error message',
 MYSQL_ERRNO = 9999;
@@ -2166,15 +2194,24 @@ $$
 CALL peter_p2() $$
 1
 1
+Level	Code	Message
+Error	1231	Variable 'sql_mode' can't be set to the value of 'NULL'
 2
 2
+Level	Code	Message
+Error	1231	Variable 'sql_mode' can't be set to the value of 'NULL'
+Error	1232	Variable 'sql_mode' can't be set to the value of 'NULL'
 3
 3
+Level	Code	Message
+Error	1231	Variable 'sql_mode' can't be set to the value of 'NULL'
+Error	1232	Variable 'sql_mode' can't be set to the value of 'NULL'
+Error	9999	Variable 'sql_mode' can't be set to the value of 'NULL'
 ERROR 42000: Hi, I am a useless error message
 show warnings $$
 Level	Code	Message
 Error	1231	Variable 'sql_mode' can't be set to the value of 'NULL'
-Error	1231	Variable 'sql_mode' can't be set to the value of 'NULL'
+Error	1232	Variable 'sql_mode' can't be set to the value of 'NULL'
 Error	9999	Variable 'sql_mode' can't be set to the value of 'NULL'
 Error	9999	Hi, I am a useless error message
 drop procedure peter_p1 $$

mysql-test/r/signal_demo3.result

@@ -95,11 +95,11 @@ call proc_1();
 ERROR 45000: Oops in proc_1
 show warnings;
 Level	Code	Message
-Error	1644	Oops in proc_5
-Error	1644	Oops in proc_4
-Error	1644	Oops in proc_3
-Error	1644	Oops in proc_2
-Error	1644	Oops in proc_1
+Error	1051	Unknown table 'oops_it_is_not_here'
+Error	1644	Oops in proc_9
+Error	1644	Oops in proc_8
+Error	1644	Oops in proc_7
+Error	1644	Oops in proc_6
 SET @@session.max_error_count = 7;
 SELECT @@session.max_error_count;
 @@session.max_error_count
@@ -108,13 +108,13 @@ call proc_1();
 ERROR 45000: Oops in proc_1
 show warnings;
 Level	Code	Message
+Error	1051	Unknown table 'oops_it_is_not_here'
+Error	1644	Oops in proc_9
+Error	1644	Oops in proc_8
 Error	1644	Oops in proc_7
 Error	1644	Oops in proc_6
 Error	1644	Oops in proc_5
 Error	1644	Oops in proc_4
-Error	1644	Oops in proc_3
-Error	1644	Oops in proc_2
-Error	1644	Oops in proc_1
 SET @@session.max_error_count = 9;
 SELECT @@session.max_error_count;
 @@session.max_error_count
@@ -123,6 +123,7 @@ call proc_1();
 ERROR 45000: Oops in proc_1
 show warnings;
 Level	Code	Message
+Error	1051	Unknown table 'oops_it_is_not_here'
 Error	1644	Oops in proc_9
 Error	1644	Oops in proc_8
 Error	1644	Oops in proc_7
@@ -131,7 +132,6 @@ Error	1644	Oops in proc_5
 Error	1644	Oops in proc_4
 Error	1644	Oops in proc_3
 Error	1644	Oops in proc_2
-Error	1644	Oops in proc_1
 drop database demo;
 SET @@global.max_error_count = @start_global_value;
 SELECT @@global.max_error_count;

mysql-test/r/sp-big.result

@@ -46,6 +46,8 @@ end while;
 close cur1;
 end|
 call p1();
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 select count(*) from t1;
 count(*)
 256

mysql-test/r/sp-bugs.result

@@ -43,6 +43,8 @@ END|
 SELECT f2 ();
 f2 ()
 NULL
+Warnings:
+Error	1305	FUNCTION testdb.f_not_exists does not exist
 DROP SCHEMA testdb;
 USE test;
 #

mysql-test/r/sp-code.result

@@ -711,6 +711,8 @@ looping	i
 looping	1
 looping	i
 looping	0
+Warnings:
+Error	1062	Duplicate entry '1' for key 'a'
 call proc_26977_works(2);
 do something
 do something
@@ -730,6 +732,8 @@ looping	i
 looping	0
 optimizer: keep hreturn
 optimizer: keep hreturn
+Warnings:
+Error	1062	Duplicate entry '2' for key 'a'
 drop table t1;
 drop procedure proc_26977_broken;
 drop procedure proc_26977_works;
@@ -888,3 +892,56 @@ Pos	Instruction
 4	jump 6
 5	error 1339
 DROP PROCEDURE p1;
+#
+# Bug#23032: Handlers declared in a SP do not handle warnings generated in sub-SP
+#
+
+# - Case 4: check that "No Data trumps Warning".
+
+CREATE TABLE t1(a INT);
+INSERT INTO t1 VALUES (1), (2), (3);
+CREATE PROCEDURE p1()
+BEGIN
+DECLARE c CURSOR FOR SELECT a FROM t1;
+OPEN c;
+BEGIN
+DECLARE v INT;
+DECLARE CONTINUE HANDLER FOR SQLWARNING
+BEGIN
+SELECT "Warning found!";
+SHOW WARNINGS;
+END;
+DECLARE EXIT HANDLER FOR NOT FOUND
+BEGIN
+SELECT "End of Result Set found!";
+SHOW WARNINGS;
+END;
+WHILE TRUE DO
+FETCH c INTO v;
+END WHILE;
+END;
+CLOSE c;
+SELECT a INTO @foo FROM t1 LIMIT 1; # Clear warning stack
+END|
+SET SESSION debug="+d,bug23032_emit_warning";
+CALL p1();
+Warning found!
+Warning found!
+Level	Code	Message
+Warning	1105	Unknown error
+Warning found!
+Warning found!
+Level	Code	Message
+Warning	1105	Unknown error
+Warning found!
+Warning found!
+Level	Code	Message
+Warning	1105	Unknown error
+End of Result Set found!
+End of Result Set found!
+Level	Code	Message
+Warning	1105	Unknown error
+Error	1329	No data - zero rows fetched, selected, or processed
+SET SESSION debug="-d,bug23032_emit_warning";
+DROP PROCEDURE p1;
+DROP TABLE t1;

mysql-test/r/sp-error.result

@@ -1344,6 +1344,8 @@ set @in_func := 0;
 select func_20713_a();
 func_20713_a()
 NULL
+Warnings:
+Error	1146	Table 'test.bogus_table_20713' doesn't exist
 select @in_func;
 @in_func
 2
@@ -1351,6 +1353,8 @@ set @in_func := 0;
 select func_20713_b();
 func_20713_b()
 NULL
+Warnings:
+Error	1146	Table 'test.bogus_table_20713' doesn't exist
 select @in_func;
 @in_func
 2
@@ -1714,3 +1718,246 @@ DROP PROCEDURE p1;
 DROP VIEW v1;
 DROP TABLE t1;
 End of 5.1 tests
+#
+# Bug#23032: Handlers declared in a SP do not handle warnings generated in sub-SP
+#
+
+# - Case 1
+
+DROP PROCEDURE IF EXISTS p1;
+DROP PROCEDURE IF EXISTS p2;
+DROP PROCEDURE IF EXISTS p3;
+DROP PROCEDURE IF EXISTS p4;
+DROP PROCEDURE IF EXISTS p5;
+DROP PROCEDURE IF EXISTS p6;
+CREATE PROCEDURE p1()
+BEGIN
+SELECT CAST('10 ' as unsigned integer);
+SELECT 1;
+CALL p2();
+END|
+CREATE PROCEDURE p2()
+BEGIN
+SELECT CAST('10 ' as unsigned integer);
+END|
+CALL p1();
+CAST('10 ' as unsigned integer)
+10
+1
+1
+CAST('10 ' as unsigned integer)
+10
+Warnings:
+Warning	1292	Truncated incorrect INTEGER value: '10 '
+DROP PROCEDURE p1;
+DROP PROCEDURE p2;
+
+# - Case 2
+
+CREATE PROCEDURE p1()
+BEGIN
+DECLARE c INT DEFAULT 0;
+DECLARE CONTINUE HANDLER FOR SQLWARNING SET c = c + 1;
+CALL p2();
+CALL p3();
+CALL p4();
+SELECT c;
+SELECT @@warning_count;
+SHOW WARNINGS;
+END|
+CREATE PROCEDURE p2()
+BEGIN
+SELECT CAST('10 ' as unsigned integer);
+END|
+CREATE PROCEDURE p3()
+BEGIN
+SELECT CAST('10 ' as unsigned integer);
+SELECT 1;
+END|
+CREATE PROCEDURE p4()
+BEGIN
+SELECT CAST('10 ' as unsigned integer);
+CALL p2();
+END|
+CREATE PROCEDURE p5()
+BEGIN
+SELECT CAST('10 ' as unsigned integer);
+SHOW WARNINGS;
+END|
+CREATE PROCEDURE P6()
+BEGIN
+DECLARE c INT DEFAULT 0;
+DECLARE CONTINUE HANDLER FOR SQLWARNING SET c = c + 1;
+CALL p5();
+SELECT c;
+END|
+CALL p1();
+CAST('10 ' as unsigned integer)
+10
+CAST('10 ' as unsigned integer)
+10
+1
+1
+CAST('10 ' as unsigned integer)
+10
+CAST('10 ' as unsigned integer)
+10
+c
+3
+@@warning_count
+1
+Level	Code	Message
+Warning	1292	Truncated incorrect INTEGER value: '10 '
+Warnings:
+Warning	1292	Truncated incorrect INTEGER value: '10 '
+CALL p6();
+CAST('10 ' as unsigned integer)
+10
+Level	Code	Message
+Warning	1292	Truncated incorrect INTEGER value: '10 '
+c
+1
+Warnings:
+Warning	1292	Truncated incorrect INTEGER value: '10 '
+DROP PROCEDURE p1;
+DROP PROCEDURE p2;
+DROP PROCEDURE p3;
+DROP PROCEDURE p4;
+DROP PROCEDURE p5;
+DROP PROCEDURE p6;
+
+# - Case 3: check that "Exception trumps No Data".
+
+DROP TABLE IF EXISTS t1;
+CREATE TABLE t1(a INT);
+INSERT INTO t1 VALUES (1), (2), (3);
+CREATE PROCEDURE p1()
+BEGIN
+DECLARE c CURSOR FOR SELECT a FROM t1;
+OPEN c;
+BEGIN
+DECLARE v1 INT;
+DECLARE v2 INT;
+DECLARE EXIT HANDLER FOR SQLEXCEPTION
+SELECT "Error caught (expected)";
+DECLARE EXIT HANDLER FOR NOT FOUND
+SELECT "End of Result Set found!";
+WHILE TRUE DO
+FETCH c INTO v1, v2;
+END WHILE;
+END;
+CLOSE c;
+SELECT a INTO @foo FROM t1 LIMIT 1; # Clear warning stack
+END|
+CALL p1();
+Error caught (expected)
+Error caught (expected)
+DROP PROCEDURE p1;
+DROP TABLE t1;
+#
+# Bug#36185: Incorrect precedence for warning and exception handlers
+#
+DROP TABLE IF EXISTS t1;
+DROP PROCEDURE IF EXISTS p1;
+CREATE TABLE t1 (a INT, b INT NOT NULL);
+CREATE PROCEDURE p1()
+BEGIN
+DECLARE CONTINUE HANDLER FOR SQLWARNING SELECT 'warning';
+DECLARE CONTINUE HANDLER FOR SQLEXCEPTION SELECT 'exception';
+INSERT INTO t1 VALUES (CAST('10 ' AS SIGNED), NULL);
+END|
+CALL p1();
+exception
+exception
+Warnings:
+Warning	1292	Truncated incorrect INTEGER value: '10 '
+Error	1048	Column 'b' cannot be null
+DROP TABLE t1;
+DROP PROCEDURE p1;
+#
+# Bug#5889: Exit handler for a warning doesn't hide the warning in trigger
+#
+
+# - Case 1
+
+CREATE TABLE t1(a INT, b INT);
+INSERT INTO t1 VALUES (1, 2);
+CREATE TRIGGER t1_bu BEFORE UPDATE ON t1 FOR EACH ROW
+BEGIN
+DECLARE EXIT HANDLER FOR SQLWARNING
+SET NEW.a = 10;
+SET NEW.a = 99999999999;
+END|
+UPDATE t1 SET b = 20;
+Warnings:
+Warning	1264	Out of range value for column 'a' at row 1
+SHOW WARNINGS;
+Level	Code	Message
+Warning	1264	Out of range value for column 'a' at row 1
+SELECT * FROM t1;
+a	b
+10	20
+DROP TRIGGER t1_bu;
+DROP TABLE t1;
+
+# - Case 2
+
+CREATE TABLE t1(a INT);
+CREATE TABLE t2(b CHAR(1));
+CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW
+BEGIN
+INSERT INTO t2 VALUES('ab'); # Produces a warning.
+INSERT INTO t2 VALUES('b');  # Does not produce a warning,
+# previous warning should be cleared.
+END|
+INSERT INTO t1 VALUES(0);
+SHOW WARNINGS;
+Level	Code	Message
+SELECT * FROM t1;
+a
+0
+SELECT * FROM t2;
+b
+a
+b
+DROP TRIGGER t1_bi;
+DROP TABLE t1;
+DROP TABLE t2;
+#
+# Bug#9857: Stored procedures: handler for sqlwarning ignored
+#
+SET @sql_mode_saved = @@sql_mode;
+SET sql_mode = traditional;
+CREATE PROCEDURE p1()
+BEGIN
+DECLARE CONTINUE HANDLER FOR SQLWARNING
+SELECT 'warning caught (expected)';
+SELECT 5 / 0;
+END|
+CREATE PROCEDURE p2()
+BEGIN
+DECLARE CONTINUE HANDLER FOR SQLEXCEPTION
+SELECT 'error caught (unexpected)';
+SELECT 5 / 0;
+END|
+CALL p1();
+5 / 0
+NULL
+warning caught (expected)
+warning caught (expected)
+Warnings:
+Warning	1365	Division by 0
+SHOW WARNINGS;
+Level	Code	Message
+Warning	1365	Division by 0
+CALL p2();
+5 / 0
+NULL
+Warnings:
+Warning	1365	Division by 0
+SHOW WARNINGS;
+Level	Code	Message
+Warning	1365	Division by 0
+DROP PROCEDURE p1;
+DROP PROCEDURE p2;
+SET sql_mode = @sql_mode_saved;

mysql-test/r/sp_trans.result

@@ -99,6 +99,8 @@ return i;
 end|
 set @error_in_func:= 0|
 insert into t1 values (bug10015_6(5)), (bug10015_6(6))|
+Warnings:
+Error	1062	Duplicate entry '1' for key 'PRIMARY'
 select @error_in_func|
 @error_in_func
 1
@@ -524,6 +526,8 @@ until done end repeat;
 close c;
 end|
 call bug14210()|
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 select count(*) from t4|
 count(*)
 256

mysql-test/r/strict.result

@@ -1190,6 +1190,8 @@ select'a'; insert into t1 values (200); end;|
 call t1();
 a
 a
+Warnings:
+Error	1264	Out of range value for column 'col1' at row 1
 select * from t1;
 col1
 drop procedure t1;

mysql-test/r/view.result

@@ -3946,6 +3946,8 @@ create view a as select 1;
 end|
 call p();
 call p();
+Warnings:
+Error	1050	Table 'a' already exists
 drop view a;
 drop procedure p;
 #

mysql-test/suite/funcs_1/r/innodb_storedproc_02.result

@@ -347,6 +347,8 @@ CALL h1();
 -7-	1	1	1	1	1	1
 END	x1	x2	x3	x4	x5	x6
 END	1	1	1	1	1	1
+Warnings:
+Error	1062	Duplicate entry 'a' for key 'w'
 DROP TABLE IF EXISTS tnull;
 DROP PROCEDURE IF EXISTS sp1;
 CREATE TABLE tnull(f1 int);
@@ -445,6 +447,8 @@ END//
 CALL h2();
 x1	x2	x3	x4	x5	x6
 1	1	1	1	1	1
+Warnings:
+Error	1062	Duplicate entry 'a' for key 'w'
 SELECT * FROM res_t1;
 w	x
 a	b
@@ -550,6 +554,8 @@ exit handler 2
 exit handler 2
 exit handler 1
 exit handler 1
+Warnings:
+Error	1146	Table 'db_storedproc.tqq' doesn't exist
 create table res_t1(w char unique, x char);
 insert into res_t1 values ('a', 'b');
 CREATE PROCEDURE h1 ()
@@ -580,6 +586,8 @@ END//
 CALL h1();
 x1	x2	x3	x4	x5	x6
 1	1	1	1	1	1
+Warnings:
+Error	1062	Duplicate entry 'a' for key 'w'
 This will fail, SQLSTATE 00000 is not allowed
 CREATE PROCEDURE sp1()
 begin1_label:BEGIN
@@ -623,6 +631,8 @@ CALL sp2();
 NULL
 @x2	@x
 1	2
+Warnings:
+Error	1318	Incorrect number of arguments for PROCEDURE db_storedproc.sp1; expected 2, got 1
 DROP PROCEDURE sp1;
 DROP PROCEDURE sp2;
 
@@ -654,6 +664,8 @@ ERROR 42000: Incorrect number of arguments for PROCEDURE db_storedproc.sp1; expe
 CALL sp2();
 -1-	@x2	@x
 -1-	0	1
+Warnings:
+Error	1318	Incorrect number of arguments for PROCEDURE db_storedproc.sp1; expected 2, got 1
 SELECT '-3-', @x2, @x;
 -3-	@x2	@x
 -3-	1	1
@@ -696,6 +708,8 @@ CALL sp2();
 -2-	1	20
 -4-	@x2	@x
 -4-	11	22
+Warnings:
+Error	1318	Incorrect number of arguments for PROCEDURE db_storedproc.sp1; expected 2, got 1
 DROP PROCEDURE sp1;
 DROP PROCEDURE sp2;
 
@@ -762,21 +776,33 @@ SELECT @done, @x;
 0	1
 INSERT INTO temp VALUES('1', NULL);
 CALL sp1();
+Warnings:
+Warning	1265	Data truncated for column 'f1' at row 1
+Warning	1265	Data truncated for column 'f2' at row 1
 SELECT @done, @x;
 @done	@x
 1	1
 INSERT INTO temp VALUES('2', NULL);
 CALL sp2();
+Warnings:
+Warning	1265	Data truncated for column 'f1' at row 1
+Warning	1265	Data truncated for column 'f2' at row 1
 SELECT @done, @x;
 @done	@x
 1	1
 INSERT INTO temp VALUES('3', NULL);
 CALL sp3();
+Warnings:
+Warning	1265	Data truncated for column 'f1' at row 1
+Warning	1265	Data truncated for column 'f2' at row 1
 SELECT @done, @x;
 @done	@x
 1	0
 INSERT INTO temp VALUES('4', NULL);
 CALL sp4();
+Warnings:
+Warning	1265	Data truncated for column 'f1' at row 1
+Warning	1265	Data truncated for column 'f2' at row 1
 SELECT @done, @x;
 @done	@x
 1	0
@@ -885,18 +911,26 @@ SELECT @done, @x;
 @done	@x
 0	1
 CALL sp1();
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 SELECT @done, @x;
 @done	@x
 1	2
 CALL sp2();
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 SELECT @done, @x;
 @done	@x
 1	2
 CALL sp3();
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 SELECT @done, @x;
 @done	@x
 1	1
 CALL sp4();
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 SELECT @done, @x;
 @done	@x
 1	1
@@ -1031,6 +1065,8 @@ SQLSTATE
 21000
 SQLSTATE
 24000
+Warnings:
+Error	1326	Cursor is not open
 SELECT '-1-', @x;
 -1-	@x
 -1-	6
@@ -1041,18 +1077,24 @@ SQLSTATE
 SQLEXCEPTION
 SQLSTATE
 24000
+Warnings:
+Error	1326	Cursor is not open
 SELECT '-2-', @x;
 -2-	@x
 -2-	6
 CALL sp3();
 SQLSTATE
 20000
+Warnings:
+Error	1339	Case not found for CASE statement
 SELECT '-3-', @x;
 -3-	@x
 -3-	1
 CALL sp4();
 SQLSTATE
 SQLEXCEPTION
+Warnings:
+Error	1339	Case not found for CASE statement
 SELECT '-4-', @x;
 -4-	@x
 -4-	1
@@ -1335,6 +1377,8 @@ CLOSE cur1;
 CLOSE cur2;
 END//
 CALL sp_outer();
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 SELECT * FROM temp1;
 f0	cnt	f1	f2	f3	f4
 _sp_out_	1	a`	a`	1000-01-01	-5000

mysql-test/suite/funcs_1/r/memory_storedproc_02.result

@@ -348,6 +348,8 @@ CALL h1();
 -7-	1	1	1	1	1	1
 END	x1	x2	x3	x4	x5	x6
 END	1	1	1	1	1	1
+Warnings:
+Error	1062	Duplicate entry 'a' for key 'w'
 DROP TABLE IF EXISTS tnull;
 DROP PROCEDURE IF EXISTS sp1;
 CREATE TABLE tnull(f1 int);
@@ -446,6 +448,8 @@ END//
 CALL h2();
 x1	x2	x3	x4	x5	x6
 1	1	1	1	1	1
+Warnings:
+Error	1062	Duplicate entry 'a' for key 'w'
 SELECT * FROM res_t1;
 w	x
 a	b
@@ -551,6 +555,8 @@ exit handler 2
 exit handler 2
 exit handler 1
 exit handler 1
+Warnings:
+Error	1146	Table 'db_storedproc.tqq' doesn't exist
 create table res_t1(w char unique, x char);
 insert into res_t1 values ('a', 'b');
 CREATE PROCEDURE h1 ()
@@ -581,6 +587,8 @@ END//
 CALL h1();
 x1	x2	x3	x4	x5	x6
 1	1	1	1	1	1
+Warnings:
+Error	1062	Duplicate entry 'a' for key 'w'
 This will fail, SQLSTATE 00000 is not allowed
 CREATE PROCEDURE sp1()
 begin1_label:BEGIN
@@ -624,6 +632,8 @@ CALL sp2();
 NULL
 @x2	@x
 1	2
+Warnings:
+Error	1318	Incorrect number of arguments for PROCEDURE db_storedproc.sp1; expected 2, got 1
 DROP PROCEDURE sp1;
 DROP PROCEDURE sp2;
 
@@ -655,6 +665,8 @@ ERROR 42000: Incorrect number of arguments for PROCEDURE db_storedproc.sp1; expe
 CALL sp2();
 -1-	@x2	@x
 -1-	0	1
+Warnings:
+Error	1318	Incorrect number of arguments for PROCEDURE db_storedproc.sp1; expected 2, got 1
 SELECT '-3-', @x2, @x;
 -3-	@x2	@x
 -3-	1	1
@@ -697,6 +709,8 @@ CALL sp2();
 -2-	1	20
 -4-	@x2	@x
 -4-	11	22
+Warnings:
+Error	1318	Incorrect number of arguments for PROCEDURE db_storedproc.sp1; expected 2, got 1
 DROP PROCEDURE sp1;
 DROP PROCEDURE sp2;
 
@@ -763,21 +777,33 @@ SELECT @done, @x;
 0	1
 INSERT INTO temp VALUES('1', NULL);
 CALL sp1();
+Warnings:
+Warning	1265	Data truncated for column 'f1' at row 1
+Warning	1265	Data truncated for column 'f2' at row 1
 SELECT @done, @x;
 @done	@x
 1	1
 INSERT INTO temp VALUES('2', NULL);
 CALL sp2();
+Warnings:
+Warning	1265	Data truncated for column 'f1' at row 1
+Warning	1265	Data truncated for column 'f2' at row 1
 SELECT @done, @x;
 @done	@x
 1	1
 INSERT INTO temp VALUES('3', NULL);
 CALL sp3();
+Warnings:
+Warning	1265	Data truncated for column 'f1' at row 1
+Warning	1265	Data truncated for column 'f2' at row 1
 SELECT @done, @x;
 @done	@x
 1	0
 INSERT INTO temp VALUES('4', NULL);
 CALL sp4();
+Warnings:
+Warning	1265	Data truncated for column 'f1' at row 1
+Warning	1265	Data truncated for column 'f2' at row 1
 SELECT @done, @x;
 @done	@x
 1	0
@@ -886,18 +912,26 @@ SELECT @done, @x;
 @done	@x
 0	1
 CALL sp1();
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 SELECT @done, @x;
 @done	@x
 1	2
 CALL sp2();
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 SELECT @done, @x;
 @done	@x
 1	2
 CALL sp3();
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 SELECT @done, @x;
 @done	@x
 1	1
 CALL sp4();
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 SELECT @done, @x;
 @done	@x
 1	1
@@ -1032,6 +1066,8 @@ SQLSTATE
 21000
 SQLSTATE
 24000
+Warnings:
+Error	1326	Cursor is not open
 SELECT '-1-', @x;
 -1-	@x
 -1-	6
@@ -1042,18 +1078,24 @@ SQLSTATE
 SQLEXCEPTION
 SQLSTATE
 24000
+Warnings:
+Error	1326	Cursor is not open
 SELECT '-2-', @x;
 -2-	@x
 -2-	6
 CALL sp3();
 SQLSTATE
 20000
+Warnings:
+Error	1339	Case not found for CASE statement
 SELECT '-3-', @x;
 -3-	@x
 -3-	1
 CALL sp4();
 SQLSTATE
 SQLEXCEPTION
+Warnings:
+Error	1339	Case not found for CASE statement
 SELECT '-4-', @x;
 -4-	@x
 -4-	1
@@ -1336,6 +1378,8 @@ CLOSE cur1;
 CLOSE cur2;
 END//
 CALL sp_outer();
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 SELECT * FROM temp1;
 f0	cnt	f1	f2	f3	f4
 _sp_out_	1	a`	a`	1000-01-01	-5000

mysql-test/suite/funcs_1/r/myisam_storedproc_02.result

@@ -348,6 +348,8 @@ CALL h1();
 -7-	1	1	1	1	1	1
 END	x1	x2	x3	x4	x5	x6
 END	1	1	1	1	1	1
+Warnings:
+Error	1062	Duplicate entry 'a' for key 'w'
 DROP TABLE IF EXISTS tnull;
 DROP PROCEDURE IF EXISTS sp1;
 CREATE TABLE tnull(f1 int);
@@ -446,6 +448,8 @@ END//
 CALL h2();
 x1	x2	x3	x4	x5	x6
 1	1	1	1	1	1
+Warnings:
+Error	1062	Duplicate entry 'a' for key 'w'
 SELECT * FROM res_t1;
 w	x
 a	b
@@ -551,6 +555,8 @@ exit handler 2
 exit handler 2
 exit handler 1
 exit handler 1
+Warnings:
+Error	1146	Table 'db_storedproc.tqq' doesn't exist
 create table res_t1(w char unique, x char);
 insert into res_t1 values ('a', 'b');
 CREATE PROCEDURE h1 ()
@@ -581,6 +587,8 @@ END//
 CALL h1();
 x1	x2	x3	x4	x5	x6
 1	1	1	1	1	1
+Warnings:
+Error	1062	Duplicate entry 'a' for key 'w'
 This will fail, SQLSTATE 00000 is not allowed
 CREATE PROCEDURE sp1()
 begin1_label:BEGIN
@@ -624,6 +632,8 @@ CALL sp2();
 NULL
 @x2	@x
 1	2
+Warnings:
+Error	1318	Incorrect number of arguments for PROCEDURE db_storedproc.sp1; expected 2, got 1
 DROP PROCEDURE sp1;
 DROP PROCEDURE sp2;
 
@@ -655,6 +665,8 @@ ERROR 42000: Incorrect number of arguments for PROCEDURE db_storedproc.sp1; expe
 CALL sp2();
 -1-	@x2	@x
 -1-	0	1
+Warnings:
+Error	1318	Incorrect number of arguments for PROCEDURE db_storedproc.sp1; expected 2, got 1
 SELECT '-3-', @x2, @x;
 -3-	@x2	@x
 -3-	1	1
@@ -697,6 +709,8 @@ CALL sp2();
 -2-	1	20
 -4-	@x2	@x
 -4-	11	22
+Warnings:
+Error	1318	Incorrect number of arguments for PROCEDURE db_storedproc.sp1; expected 2, got 1
 DROP PROCEDURE sp1;
 DROP PROCEDURE sp2;
 
@@ -763,21 +777,33 @@ SELECT @done, @x;
 0	1
 INSERT INTO temp VALUES('1', NULL);
 CALL sp1();
+Warnings:
+Warning	1265	Data truncated for column 'f1' at row 1
+Warning	1265	Data truncated for column 'f2' at row 1
 SELECT @done, @x;
 @done	@x
 1	1
 INSERT INTO temp VALUES('2', NULL);
 CALL sp2();
+Warnings:
+Warning	1265	Data truncated for column 'f1' at row 1
+Warning	1265	Data truncated for column 'f2' at row 1
 SELECT @done, @x;
 @done	@x
 1	1
 INSERT INTO temp VALUES('3', NULL);
 CALL sp3();
+Warnings:
+Warning	1265	Data truncated for column 'f1' at row 1
+Warning	1265	Data truncated for column 'f2' at row 1
 SELECT @done, @x;
 @done	@x
 1	0
 INSERT INTO temp VALUES('4', NULL);
 CALL sp4();
+Warnings:
+Warning	1265	Data truncated for column 'f1' at row 1
+Warning	1265	Data truncated for column 'f2' at row 1
 SELECT @done, @x;
 @done	@x
 1	0
@@ -886,18 +912,26 @@ SELECT @done, @x;
 @done	@x
 0	1
 CALL sp1();
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 SELECT @done, @x;
 @done	@x
 1	2
 CALL sp2();
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 SELECT @done, @x;
 @done	@x
 1	2
 CALL sp3();
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 SELECT @done, @x;
 @done	@x
 1	1
 CALL sp4();
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 SELECT @done, @x;
 @done	@x
 1	1
@@ -1032,6 +1066,8 @@ SQLSTATE
 21000
 SQLSTATE
 24000
+Warnings:
+Error	1326	Cursor is not open
 SELECT '-1-', @x;
 -1-	@x
 -1-	6
@@ -1042,18 +1078,24 @@ SQLSTATE
 SQLEXCEPTION
 SQLSTATE
 24000
+Warnings:
+Error	1326	Cursor is not open
 SELECT '-2-', @x;
 -2-	@x
 -2-	6
 CALL sp3();
 SQLSTATE
 20000
+Warnings:
+Error	1339	Case not found for CASE statement
 SELECT '-3-', @x;
 -3-	@x
 -3-	1
 CALL sp4();
 SQLSTATE
 SQLEXCEPTION
+Warnings:
+Error	1339	Case not found for CASE statement
 SELECT '-4-', @x;
 -4-	@x
 -4-	1
@@ -1336,6 +1378,8 @@ CLOSE cur1;
 CLOSE cur2;
 END//
 CALL sp_outer();
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 SELECT * FROM temp1;
 f0	cnt	f1	f2	f3	f4
 _sp_out_	1	a`	a`	1000-01-01	-5000

mysql-test/suite/rpl/r/rpl_row_sp005.result

@@ -77,6 +77,8 @@ id2
 < ---- Master selects-- >
 -------------------------
 CALL test.p1();
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 SELECT * FROM test.t3 ORDER BY id3;
 id3	c
 1	MySQL

mysql-test/suite/rpl/r/rpl_row_sp006_InnoDB.result

@@ -38,6 +38,8 @@ INSERT INTO t1 VALUES ('MySQL','1993-02-04'),('ROCKS', '1990-08-27'),('Texas', '
 END|
 CALL p2();
 CALL p1();
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 DROP TABLE t1;
 DROP TABLE t2;
 DROP PROCEDURE p1;

mysql-test/suite/rpl/r/rpl_row_trig003.result

@@ -69,9 +69,15 @@ INSERT INTO test.t2 VALUES(NULL,0,'Testing MySQL databases is a cool ', 'MySQL C
 UPDATE test.t1 SET b1 = 0 WHERE b1 = 1;
 INSERT INTO test.t2 VALUES(NULL,1,'This is an after update test.', 'If this works, total will not be zero on the master or slave',1.4321,5.221,0,YEAR(NOW()),NOW());
 UPDATE test.t2 SET b1 = 0 WHERE b1 = 1;
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 INSERT INTO test.t1 VALUES(NULL,1,'add some more test data test.', 'and hope for the best', 3.321,5.221,0,YEAR(NOW()),NOW());
 DELETE FROM test.t1 WHERE id = 1;
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 DELETE FROM test.t2 WHERE id = 1;
+Warnings:
+Error	1329	No data - zero rows fetched, selected, or processed
 DROP TRIGGER test.t1_bi;
 DROP TRIGGER test.t2_ai;
 DROP TRIGGER test.t1_bu;

mysql-test/t/signal.test

@@ -2408,6 +2408,7 @@ BEGIN
   DECLARE EXIT HANDLER FOR x
   BEGIN
     SELECT '2';
+    SHOW WARNINGS;
     RESIGNAL x SET MYSQL_ERRNO = 9999;
   END;
 
@@ -2415,9 +2416,10 @@ BEGIN
     DECLARE EXIT HANDLER FOR x
     BEGIN
       SELECT '1';
+      SHOW WARNINGS;
       RESIGNAL x SET
         SCHEMA_NAME = 'test',
-        MYSQL_ERRNO= 1231;
+        MYSQL_ERRNO= 1232;
     END;
     /* Raises ER_WRONG_VALUE_FOR_VAR : 1231, SQLSTATE 42000 */
     SET @@sql_mode=NULL;
@@ -2431,6 +2433,7 @@ BEGIN
   DECLARE EXIT HANDLER FOR x
   BEGIN
     SELECT '3';
+    SHOW WARNINGS;
     RESIGNAL x SET
       MESSAGE_TEXT = 'Hi, I am a useless error message',
       MYSQL_ERRNO = 9999;

mysql-test/t/sp-code.test

@@ -649,3 +649,56 @@ END//
 DELIMITER ;//
 SHOW PROCEDURE CODE p1;
 DROP PROCEDURE p1;
+
+--echo #
+--echo # Bug#23032: Handlers declared in a SP do not handle warnings generated in sub-SP
+--echo #
+
+--echo
+--echo # - Case 4: check that "No Data trumps Warning".
+--echo
+
+CREATE TABLE t1(a INT);
+INSERT INTO t1 VALUES (1), (2), (3);
+
+delimiter |;
+
+CREATE PROCEDURE p1()
+BEGIN
+  DECLARE c CURSOR FOR SELECT a FROM t1;
+
+  OPEN c;
+  
+  BEGIN
+    DECLARE v INT;
+
+    DECLARE CONTINUE HANDLER FOR SQLWARNING
+    BEGIN
+      SELECT "Warning found!";
+      SHOW WARNINGS;
+    END;
+
+    DECLARE EXIT HANDLER FOR NOT FOUND
+    BEGIN
+      SELECT "End of Result Set found!";
+      SHOW WARNINGS;
+    END;
+
+    WHILE TRUE DO
+      FETCH c INTO v;
+    END WHILE;
+  END;
+
+  CLOSE c;
+
+  SELECT a INTO @foo FROM t1 LIMIT 1; # Clear warning stack
+END|
+
+delimiter ;|
+
+SET SESSION debug="+d,bug23032_emit_warning";
+CALL p1();
+SET SESSION debug="-d,bug23032_emit_warning";
+
+DROP PROCEDURE p1;
+DROP TABLE t1;

mysql-test/t/sp-error.test

@@ -2543,3 +2543,273 @@ DROP TABLE t1;
 
 --echo End of 5.1 tests
 
+--echo #
+--echo # Bug#23032: Handlers declared in a SP do not handle warnings generated in sub-SP
+--echo #
+
+--echo
+--echo # - Case 1
+--echo
+
+--disable_warnings
+DROP PROCEDURE IF EXISTS p1;
+DROP PROCEDURE IF EXISTS p2;
+DROP PROCEDURE IF EXISTS p3;
+DROP PROCEDURE IF EXISTS p4;
+DROP PROCEDURE IF EXISTS p5;
+DROP PROCEDURE IF EXISTS p6;
+--enable_warnings
+
+delimiter |;
+
+CREATE PROCEDURE p1()
+  BEGIN
+    SELECT CAST('10 ' as unsigned integer);
+    SELECT 1;
+    CALL p2();
+  END|
+
+CREATE PROCEDURE p2()
+  BEGIN
+    SELECT CAST('10 ' as unsigned integer);
+  END|
+
+delimiter ;|
+
+CALL p1();
+
+DROP PROCEDURE p1;
+DROP PROCEDURE p2;
+
+--echo
+--echo # - Case 2
+--echo
+
+delimiter |;
+
+CREATE PROCEDURE p1()
+  BEGIN
+    DECLARE c INT DEFAULT 0;
+    DECLARE CONTINUE HANDLER FOR SQLWARNING SET c = c + 1;
+    CALL p2();
+    CALL p3();
+    CALL p4();
+    SELECT c;
+    SELECT @@warning_count;
+    SHOW WARNINGS;
+  END|
+
+CREATE PROCEDURE p2()
+  BEGIN
+    SELECT CAST('10 ' as unsigned integer);
+  END|
+
+CREATE PROCEDURE p3()
+  BEGIN
+    SELECT CAST('10 ' as unsigned integer);
+    SELECT 1;
+  END|
+
+CREATE PROCEDURE p4()
+  BEGIN
+    SELECT CAST('10 ' as unsigned integer);
+    CALL p2();
+  END|
+
+CREATE PROCEDURE p5()
+  BEGIN
+    SELECT CAST('10 ' as unsigned integer);
+    SHOW WARNINGS;
+  END|
+
+CREATE PROCEDURE P6()
+  BEGIN
+    DECLARE c INT DEFAULT 0;
+    DECLARE CONTINUE HANDLER FOR SQLWARNING SET c = c + 1;
+    CALL p5();
+    SELECT c;
+  END|
+
+delimiter ;|
+
+CALL p1();
+CALL p6();
+
+DROP PROCEDURE p1;
+DROP PROCEDURE p2;
+DROP PROCEDURE p3;
+DROP PROCEDURE p4;
+DROP PROCEDURE p5;
+DROP PROCEDURE p6;
+
+--echo
+--echo # - Case 3: check that "Exception trumps No Data".
+--echo
+
+--disable_warnings
+DROP TABLE IF EXISTS t1;
+--enable_warnings
+
+CREATE TABLE t1(a INT);
+INSERT INTO t1 VALUES (1), (2), (3);
+
+delimiter |;
+
+CREATE PROCEDURE p1()
+BEGIN
+  DECLARE c CURSOR FOR SELECT a FROM t1;
+
+  OPEN c;
+  
+  BEGIN
+    DECLARE v1 INT;
+    DECLARE v2 INT;
+
+    DECLARE EXIT HANDLER FOR SQLEXCEPTION
+      SELECT "Error caught (expected)";
+
+    DECLARE EXIT HANDLER FOR NOT FOUND
+      SELECT "End of Result Set found!";
+
+    WHILE TRUE DO
+      FETCH c INTO v1, v2;
+    END WHILE;
+  END;
+
+  CLOSE c;
+
+  SELECT a INTO @foo FROM t1 LIMIT 1; # Clear warning stack
+END|
+
+delimiter ;|
+
+CALL p1();
+
+DROP PROCEDURE p1;
+DROP TABLE t1;
+
+--echo #
+--echo # Bug#36185: Incorrect precedence for warning and exception handlers
+--echo #
+
+--disable_warnings
+DROP TABLE IF EXISTS t1;
+DROP PROCEDURE IF EXISTS p1;
+--enable_warnings
+
+CREATE TABLE t1 (a INT, b INT NOT NULL);
+
+delimiter |;
+
+CREATE PROCEDURE p1()
+BEGIN
+  DECLARE CONTINUE HANDLER FOR SQLWARNING SELECT 'warning';
+  DECLARE CONTINUE HANDLER FOR SQLEXCEPTION SELECT 'exception';
+  INSERT INTO t1 VALUES (CAST('10 ' AS SIGNED), NULL);
+END|
+
+delimiter ;|
+
+CALL p1();
+
+DROP TABLE t1;
+DROP PROCEDURE p1;
+
+--echo #
+--echo # Bug#5889: Exit handler for a warning doesn't hide the warning in trigger
+--echo #
+
+--echo
+--echo # - Case 1
+--echo
+
+CREATE TABLE t1(a INT, b INT);
+INSERT INTO t1 VALUES (1, 2);
+
+delimiter |;
+
+CREATE TRIGGER t1_bu BEFORE UPDATE ON t1 FOR EACH ROW
+BEGIN
+  DECLARE EXIT HANDLER FOR SQLWARNING
+    SET NEW.a = 10;
+
+  SET NEW.a = 99999999999;
+END|
+
+delimiter ;|
+
+UPDATE t1 SET b = 20;
+
+SHOW WARNINGS;
+
+SELECT * FROM t1;
+
+DROP TRIGGER t1_bu;
+DROP TABLE t1;
+
+--echo
+--echo # - Case 2
+--echo
+
+CREATE TABLE t1(a INT);
+CREATE TABLE t2(b CHAR(1));
+
+delimiter |;
+
+CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW
+BEGIN
+  INSERT INTO t2 VALUES('ab'); # Produces a warning.
+
+  INSERT INTO t2 VALUES('b');  # Does not produce a warning,
+                               # previous warning should be cleared.
+END|
+
+delimiter ;|
+
+INSERT INTO t1 VALUES(0);
+
+SHOW WARNINGS;
+
+SELECT * FROM t1;
+SELECT * FROM t2;
+
+DROP TRIGGER t1_bi;
+DROP TABLE t1;
+DROP TABLE t2;
+
+--echo #
+--echo # Bug#9857: Stored procedures: handler for sqlwarning ignored
+--echo #
+
+SET @sql_mode_saved = @@sql_mode;
+SET sql_mode = traditional;
+
+delimiter |;
+
+CREATE PROCEDURE p1()
+BEGIN
+  DECLARE CONTINUE HANDLER FOR SQLWARNING
+    SELECT 'warning caught (expected)';
+  
+  SELECT 5 / 0;
+END|
+
+CREATE PROCEDURE p2()
+BEGIN
+  DECLARE CONTINUE HANDLER FOR SQLEXCEPTION
+    SELECT 'error caught (unexpected)';
+  
+  SELECT 5 / 0;
+END|
+
+delimiter ;|
+
+CALL p1();
+SHOW WARNINGS;
+
+CALL p2();
+SHOW WARNINGS;
+
+DROP PROCEDURE p1;
+DROP PROCEDURE p2;
+SET sql_mode = @sql_mode_saved;

mysql-test/t/sp.test

@@ -5432,6 +5432,8 @@ drop procedure if exists bug15231_1|
 drop procedure if exists bug15231_2|
 drop procedure if exists bug15231_3|
 drop procedure if exists bug15231_4|
+drop procedure if exists bug15231_5|
+drop procedure if exists bug15231_6|
 --enable_warnings
 
 create table t3 (id int not null)|
@@ -5461,7 +5463,7 @@ end|
 create procedure bug15231_3()
 begin
   declare exit handler for sqlwarning
-    select 'Caught it (wrong)' as 'Result';
+    select 'Caught it (correct)' as 'Result';
 
   call bug15231_4();
 end|
@@ -5472,16 +5474,37 @@ begin
 
   set x = 'zap';
   select 'Missed it (correct)' as 'Result';
+  show warnings;
+end|
+
+create procedure bug15231_5()
+begin
+  declare exit handler for sqlwarning
+    select 'Caught it (wrong)' as 'Result';
+
+  call bug15231_6();
+end|
+
+create procedure bug15231_6()
+begin
+  declare x decimal(2,1);
+
+  set x = 'zap';
+  select 'Missed it (correct)' as 'Result';
+  select id from t3;
 end|
 
 call bug15231_1()|
 call bug15231_3()|
+call bug15231_5()|
 
-drop table if exists t3|
-drop procedure if exists bug15231_1|
-drop procedure if exists bug15231_2|
-drop procedure if exists bug15231_3|
-drop procedure if exists bug15231_4|
+drop table t3|
+drop procedure bug15231_1|
+drop procedure bug15231_2|
+drop procedure bug15231_3|
+drop procedure bug15231_4|
+drop procedure bug15231_5|
+drop procedure bug15231_6|
 
 
 #

sql/sp_head.cc

@@ -1075,6 +1075,104 @@ void sp_head::recursion_level_error(THD *thd)
 }
 
 
+/**
+  Find an SQL handler for any condition (warning or error) after execution
+  of a stored routine instruction. Basically, this function looks for an
+  appropriate SQL handler in RT-contexts. If an SQL handler is found, it is
+  remembered in the RT-context for future activation (the context can be
+  inactive at the moment).
+
+  If there is no pending condition, the function just returns.
+
+  If there was an error during the execution, an SQL handler for it will be
+  searched within the current and outer scopes.
+
+  There might be several errors in the Warning Info (that's possible by using
+  SIGNAL/RESIGNAL in nested scopes) -- the function is looking for an SQL
+  handler for the latest (current) error only.
+
+  If there was a warning during the execution, an SQL handler for it will be
+  searched within the current scope only.
+
+  If several warnings were thrown during the execution and there are different
+  SQL handlers for them, it is not determined which SQL handler will be chosen.
+  Only one SQL handler will be executed.
+
+  If warnings and errors were thrown during the execution, the error takes
+  precedence. I.e. error handler will be executed. If there is no handler
+  for that error, condition will remain unhandled.
+
+  Once a warning or an error has been handled it is not removed from
+  Warning Info.
+
+  According to The Standard (quoting PeterG):
+
+    An SQL procedure statement works like this ...
+    SQL/Foundation 13.5 <SQL procedure statement>
+    (General Rules) (greatly summarized) says:
+    (1) Empty diagnostics area, thus clearing the condition.
+    (2) Execute statement.
+        During execution, if Exception Condition occurs,
+        set Condition Area = Exception Condition and stop
+        statement.
+        During execution, if No Data occurs,
+        set Condition Area = No Data Condition and continue
+        statement.
+        During execution, if Warning occurs,
+        and Condition Area is not already full due to
+        an earlier No Data condition, set Condition Area
+        = Warning and continue statement.
+    (3) Finish statement.
+        At end of execution, if Condition Area is not
+        already full due to an earlier No Data or Warning,
+        set Condition Area = Successful Completion.
+        In effect, this system means there is a precedence:
+        Exception trumps No Data, No Data trumps Warning,
+        Warning trumps Successful Completion.
+
+    NB: "Procedure statements" include any DDL or DML or
+    control statements. So CREATE and DELETE and WHILE
+    and CALL and RETURN are procedure statements. But
+    DECLARE and END are not procedure statements.
+
+  @param thd thread handle
+  @param ctx runtime context of the stored routine
+*/
+
+static void
+find_handler_after_execution(THD *thd, sp_rcontext *ctx)
+{
+  if (thd->is_error())
+  {
+    ctx->find_handler(thd,
+                      thd->stmt_da->sql_errno(),
+                      thd->stmt_da->get_sqlstate(),
+                      MYSQL_ERROR::WARN_LEVEL_ERROR,
+                      thd->stmt_da->message());
+  }
+  else if (thd->warning_info->statement_warn_count())
+  {
+    List_iterator<MYSQL_ERROR> it(thd->warning_info->warn_list());
+    MYSQL_ERROR *err;
+    while ((err= it++))
+    {
+      if (err->get_level() != MYSQL_ERROR::WARN_LEVEL_WARN &&
+          err->get_level() != MYSQL_ERROR::WARN_LEVEL_NOTE)
+        continue;
+
+      if (ctx->find_handler(thd,
+                            err->get_sql_errno(),
+                            err->get_sqlstate(),
+                            err->get_level(),
+                            err->get_message_text()))
+      {
+        break;
+      }
+    }
+  }
+}
+
+
 /**
   Execute the routine. The main instruction jump loop is there.
   Assume the parameters already set.
@@ -1096,7 +1194,7 @@ sp_head::execute(THD *thd)
   LEX_STRING saved_cur_db_name=
     { saved_cur_db_name_buf, sizeof(saved_cur_db_name_buf) };
   bool cur_db_changed= FALSE;
-  sp_rcontext *ctx;
+  sp_rcontext *ctx= thd->spcont;
   bool err_status= FALSE;
   uint ip= 0;
   ulong save_sql_mode;
@@ -1157,8 +1255,6 @@ sp_head::execute(THD *thd)
     goto done;
   }
 
-  if ((ctx= thd->spcont))
-    ctx->clear_handler();
   thd->is_slave_error= 0;
   old_arena= thd->stmt_arena;
 
@@ -1243,7 +1339,6 @@ sp_head::execute(THD *thd)
   do
   {
     sp_instr *i;
-    uint hip;
 
 #if defined(ENABLED_PROFILING)
     /*
@@ -1265,6 +1360,9 @@ sp_head::execute(THD *thd)
       break;
     }
 
+    /* Reset number of warnings for this query. */
+    thd->warning_info->reset_for_next_command();
+
     DBUG_PRINT("execute", ("Instruction %u", ip));
 
     /*
@@ -1309,40 +1407,28 @@ sp_head::execute(THD *thd)
     free_root(&execute_mem_root, MYF(0));
 
     /*
-      Check if an exception has occurred and a handler has been found
-      Note: We have to check even if err_status == FALSE, since warnings (and
-      some errors) don't return a non-zero value. We also have to check even
-      if thd->killed != 0, since some errors return with this even when a
-      handler has been found (e.g. "bad data").
+      Find and process SQL handlers unless it is a fatal error (fatal
+      errors are not catchable by SQL handlers) or the connection has been
+      killed during execution.
     */
-    if (ctx)
+    if (!thd->is_fatal_error && !thd->killed_errno())
     {
-      uint handler_index;
+      /*
+        Find SQL handler in the appropriate RT-contexts:
+          - warnings can be handled by SQL handlers within
+            the current scope only;
+          - errors can be handled by any SQL handler from outer scope.
+      */
+      find_handler_after_execution(thd, ctx);
 
-      switch (ctx->found_handler(& hip, & handler_index)) {
-      case SP_HANDLER_NONE:
-        break;
-      case SP_HANDLER_CONTINUE:
-        thd->restore_active_arena(&execute_arena, &backup_arena);
-        thd->set_n_backup_active_arena(&execute_arena, &backup_arena);
-        ctx->push_hstack(i->get_cont_dest());
-        /* Fall through */
-      default:
-        if (ctx->end_partial_result_set)
-          thd->protocol->end_partial_result_set(thd);
-        ip= hip;
+      /* If found, activate handler for the current scope. */
+      if (ctx->activate_handler(thd, &ip, i, &execute_arena, &backup_arena))
         err_status= FALSE;
-        ctx->clear_handler();
-        ctx->enter_handler(hip, handler_index);
-        thd->clear_error();
-        thd->is_fatal_error= 0;
-        thd->killed= THD::NOT_KILLED;
-        thd->mysys_var->abort= 0;
-        continue;
-      }
-
-      ctx->end_partial_result_set= FALSE;
     }
+
+    /* Reset sp_rcontext::end_partial_result_set flag. */
+    ctx->end_partial_result_set= FALSE;
+
   } while (!err_status && !thd->killed && !thd->is_fatal_error);
 
 #if defined(ENABLED_PROFILING)
@@ -3037,23 +3123,14 @@ sp_instr_set::exec_core(THD *thd, uint *nextp)
 {
   int res= thd->spcont->set_variable(thd, m_offset, &m_value);
 
-  if (res && thd->spcont->found_handler_here())
+  if (res)
   {
-    /*
-      Failed to evaluate the value, and a handler has been found. Reset the
-      variable to NULL.
-    */
+    /* Failed to evaluate the value. Reset the variable to NULL. */
 
     if (thd->spcont->set_variable(thd, m_offset, 0))
     {
       /* If this also failed, let's abort. */
-
-      sp_rcontext *spcont= thd->spcont;
-
-      thd->spcont= NULL;           /* Avoid handlers */
-      my_error(ER_OUT_OF_RESOURCES, MYF(0));
-      spcont->clear_handler();
-      thd->spcont= spcont;
+      my_error(ER_OUT_OF_RESOURCES, MYF(ME_FATALERROR));
     }
   }
 
@@ -3586,18 +3663,6 @@ sp_instr_copen::execute(THD *thd, uint *nextp)
     if (thd->stmt_arena->free_list)
       cleanup_items(thd->stmt_arena->free_list);
     thd->stmt_arena= old_arena;
-    /*
-      Work around the fact that errors in selects are not returned properly
-      (but instead converted into a warning), so if a condition handler
-      caught, we have lost the result code.
-    */
-    if (!res)
-    {
-      uint dummy1, dummy2;
-
-      if (thd->spcont->found_handler(&dummy1, &dummy2))
-        res= -1;
-    }
     /* TODO: Assert here that we either have an error or a cursor */
   }
   DBUG_RETURN(res);
@@ -3773,13 +3838,11 @@ sp_instr_set_case_expr::exec_core(THD *thd, uint *nextp)
 {
   int res= thd->spcont->set_case_expr(thd, m_case_expr_id, &m_case_expr);
 
-  if (res &&
-      !thd->spcont->get_case_expr(m_case_expr_id) &&
-      thd->spcont->found_handler_here())
+  if (res && !thd->spcont->get_case_expr(m_case_expr_id))
   {
     /*
       Failed to evaluate the value, the case expression is still not
-      initialized, and a handler has been found. Set to NULL so we can continue.
+      initialized. Set to NULL so we can continue.
     */
 
     Item *null_item= new Item_null();
@@ -3788,13 +3851,7 @@ sp_instr_set_case_expr::exec_core(THD *thd, uint *nextp)
         thd->spcont->set_case_expr(thd, m_case_expr_id, &null_item))
     {
       /* If this also failed, we have to abort. */
-
-      sp_rcontext *spcont= thd->spcont;
-
-      thd->spcont= NULL;           /* Avoid handlers */
-      my_error(ER_OUT_OF_RESOURCES, MYF(0));
-      spcont->clear_handler();
-      thd->spcont= spcont;
+      my_error(ER_OUT_OF_RESOURCES, MYF(ME_FATALERROR));
     }
   }
   else

sql/sp_pcontext.h

@@ -332,13 +332,6 @@ class sp_pcontext : public Sql_alloc
   int
   push_cond(LEX_STRING *name, sp_cond_type_t *val);
 
-  inline void
-  pop_cond(uint num)
-  {
-    while (num--)
-      pop_dynamic(&m_conds);
-  }
-
   sp_cond_type_t *
   find_cond(LEX_STRING *name, my_bool scoped=0);
 

sql/sp_rcontext.h

@@ -131,67 +131,40 @@ class sp_rcontext : public Sql_alloc
     return m_return_value_set;
   }
 
+  /*
+    SQL handlers support.
+  */
+
   void push_handler(struct sp_cond_type *cond, uint h, int type);
 
   void pop_handlers(uint count);
 
-  // Returns 1 if a handler was found, 0 otherwise.
   bool
   find_handler(THD *thd,
                uint sql_errno,
-               const char* sqlstate,
+               const char *sqlstate,
                MYSQL_ERROR::enum_warning_level level,
-               const char* msg,
-               MYSQL_ERROR ** cond_hdl);
+               const char *msg);
 
-  // If there is an error handler for this error, handle it and return TRUE.
-  bool
-  handle_condition(THD *thd,
-                   uint sql_errno,
-                   const char* sqlstate,
-                   MYSQL_ERROR::enum_warning_level level,
-                   const char* msg,
-                   MYSQL_ERROR ** cond_hdl);
-
-  // Returns handler type and sets *ip to location if one was found
-  inline int
-  found_handler(uint *ip, uint *index)
-  {
-    if (m_hfound < 0)
-      return SP_HANDLER_NONE;
-    *ip= m_handler[m_hfound].handler;
-    *index= m_hfound;
-    return m_handler[m_hfound].type;
-  }
-
-  MYSQL_ERROR* raised_condition() const;
-
-  // Returns true if we found a handler in this context
-  inline bool
-  found_handler_here()
-  {
-    return (m_hfound >= 0);
-  }
+  MYSQL_ERROR *
+  raised_condition() const;
 
-  // Clears the handler find state
-  inline void
-  clear_handler()
-  {
-    m_hfound= -1;
-  }
+  void
+  push_hstack(uint h);
 
-  void push_hstack(uint h);
+  uint
+  pop_hstack();
 
-  uint pop_hstack();
+  bool
+  activate_handler(THD *thd,
+                   uint *ip,
+                   sp_instr *instr,
+                   Query_arena *execute_arena,
+                   Query_arena *backup_arena);
 
-  /**
-    Enter a SQL exception handler.
-    @param hip the handler instruction pointer
-    @param index the handler index
-  */
-  void enter_handler(uint hip, uint index);
 
-  void exit_handler();
+  void
+  exit_handler();
 
   void
   push_cursor(sp_lex_keeper *lex_keeper, sp_instr_cpush *i);
@@ -199,7 +172,7 @@ class sp_rcontext : public Sql_alloc
   void
   pop_cursors(uint count);
 
-  void
+  inline void
   pop_all_cursors()
   {
     pop_cursors(m_ccount);

sql/sql_class.cc

@@ -845,35 +845,6 @@ MYSQL_ERROR* THD::raise_condition(uint sql_errno,
     }
   }
 
-  /*
-    If a continue handler is found, the error message will be cleared
-    by the stored procedures code.
-  */
-  if (!is_fatal_error && spcont &&
-      spcont->handle_condition(this, sql_errno, sqlstate, level, msg, &cond))
-  {
-    /*
-      Do not push any warnings, a handled error must be completely
-      silenced.
-    */
-    DBUG_RETURN(cond);
-  }
-
-  /* Un-handled conditions */
-
-  cond= raise_condition_no_handler(sql_errno, sqlstate, level, msg);
-  DBUG_RETURN(cond);
-}
-
-MYSQL_ERROR*
-THD::raise_condition_no_handler(uint sql_errno,
-                                const char* sqlstate,
-                                MYSQL_ERROR::enum_warning_level level,
-                                const char* msg)
-{
-  MYSQL_ERROR *cond= NULL;
-  DBUG_ENTER("THD::raise_condition_no_handler");
-
   query_cache_abort(&query_cache_tls);
 
   /* FIXME: broken special case */
@@ -886,6 +857,7 @@ THD::raise_condition_no_handler(uint sql_errno,
   cond= warning_info->push_warning(this, sql_errno, sqlstate, level, msg);
   DBUG_RETURN(cond);
 }
+
 extern "C"
 void *thd_alloc(MYSQL_THD thd, unsigned int size)
 {

sql/sql_class.h

@@ -2800,23 +2800,6 @@ class THD :public Statement,
                   MYSQL_ERROR::enum_warning_level level,
                   const char* msg);
 
-  /**
-    Raise a generic SQL condition, without activation any SQL condition
-    handlers.
-    This method is necessary to support the RESIGNAL statement,
-    which is allowed to bypass SQL exception handlers.
-    @param sql_errno the condition error number
-    @param sqlstate the condition SQLSTATE
-    @param level the condition level
-    @param msg the condition message text
-    @return The condition raised, or NULL
-  */
-  MYSQL_ERROR*
-  raise_condition_no_handler(uint sql_errno,
-                             const char* sqlstate,
-                             MYSQL_ERROR::enum_warning_level level,
-                             const char* msg);
-
 public:
   /** Overloaded to guard query/query_length fields */
   virtual void set_statement(Statement *stmt);

sql/sql_error.cc

@@ -494,14 +494,6 @@ void Warning_info::clear_warning_info(ulonglong warn_id_arg)
   m_current_row_for_warning= 1; /* Start counting from the first row */
 }
 
-void Warning_info::reserve_space(THD *thd, uint count)
-{
-  /* Make room for count conditions */
-  while ((m_warn_list.elements > 0) &&
-        ((m_warn_list.elements + count) > thd->variables.max_error_count))
-    m_warn_list.pop();
-}
-
 /**
   Append warnings only if the original contents of the routine
   warning info was replaced.

sql/sql_error.h

@@ -153,8 +153,8 @@ class Diagnostics_area
   Representation of a SQL condition.
   A SQL condition can be a completion condition (note, warning),
   or an exception condition (error, not found).
-  @note This class is named MYSQL_ERROR instead of SQL_condition for historical reasons,
-  to facilitate merging code with previous releases.
+  @note This class is named MYSQL_ERROR instead of SQL_condition for
+  historical reasons, to facilitate merging code with previous releases.
 */
 class MYSQL_ERROR : public Sql_alloc
 {
@@ -471,18 +471,6 @@ class Warning_info
 
   ulong statement_warn_count() const { return m_statement_warn_count; }
 
-  /**
-    Reserve some space in the condition area.
-    This is a privileged operation, reserved for the RESIGNAL implementation,
-    as only the RESIGNAL statement is allowed to remove conditions from
-    the condition area.
-    For other statements, new conditions are not added to the condition
-    area once the condition area is full.
-    @param thd The current thread
-    @param count The number of slots to reserve
-  */
-  void reserve_space(THD *thd, uint count);
-
   /** Add a new condition to the current list. */
   MYSQL_ERROR *push_warning(THD *thd,
                             uint sql_errno, const char* sqlstate,

sql/sql_signal.cc

@@ -499,18 +499,6 @@ bool Resignal_statement::execute(THD *thd)
   }
 
   /* RESIGNAL with signal_value */
-
-  /* Make room for 2 conditions */
-  thd->warning_info->reserve_space(thd, 2);
-
-  MYSQL_ERROR *raised= NULL;
-  raised= thd->raise_condition_no_handler(signaled->get_sql_errno(),
-                                          signaled->get_sqlstate(),
-                                          signaled->get_level(),
-                                          signaled->get_message_text());
-  if (raised)
-    raised->copy_opt_attributes(signaled);
-
   result= raise_condition(thd, signaled);
 
   DBUG_RETURN(result);