diff --git a/mysql-test/r/alter_table.result b/mysql-test/r/alter_table.result
index f224a10c9bd..5c50b3cd79d 100644
--- a/mysql-test/r/alter_table.result
+++ b/mysql-test/r/alter_table.result
@@ -562,3 +562,7 @@ desc t1;
 Field	Type	Null	Key	Default	Extra
 mycol	int(10)	NO		0	
 drop table t1;
+create table t1 (t varchar(255) default null, key t (t(80)))
+engine=myisam default charset=latin1;
+alter table t1 change t t text;
+drop table t1;
diff --git a/mysql-test/r/create.result b/mysql-test/r/create.result
index bbd4a60c5b1..848b84e2b8c 100644
--- a/mysql-test/r/create.result
+++ b/mysql-test/r/create.result
@@ -598,6 +598,11 @@ DESC t2;
 Field	Type	Null	Key	Default	Extra
 f2	varchar(171)	YES		NULL	
 DROP TABLE t1,t2;
+CREATE TABLE t12913 (f1 ENUM ('a','b')) AS SELECT 'a' AS f1;
+SELECT * FROM t12913;
+f1
+a
+DROP TABLE t12913;
 create database mysqltest;
 use mysqltest;
 drop database mysqltest;
diff --git a/mysql-test/r/sp-code.result b/mysql-test/r/sp-code.result
index e6c4ffe1731..943471c2261 100644
--- a/mysql-test/r/sp-code.result
+++ b/mysql-test/r/sp-code.result
@@ -49,7 +49,7 @@ Pos	Instruction
 9	set err@1 1
 10	hreturn 5
 11	cfetch c@0 n@4
-12	jump_if_not 15 isnull(n@4)
+12	jump_if_not 15(17) isnull(n@4)
 13	set nulls@2 (nulls@2 + 1)
 14	jump 17
 15	set count@3 (count@3 + 1)
diff --git a/mysql-test/r/sp.result b/mysql-test/r/sp.result
index d56cf086cdf..4c2f7b7f03b 100644
--- a/mysql-test/r/sp.result
+++ b/mysql-test/r/sp.result
@@ -3624,8 +3624,6 @@ drop procedure if exists bug7049_1|
 drop procedure if exists bug7049_2|
 drop procedure if exists bug7049_3|
 drop procedure if exists bug7049_4|
-drop procedure if exists bug7049_5|
-drop procedure if exists bug7049_6|
 drop function if exists bug7049_1|
 drop function if exists bug7049_2|
 create table t3 ( x int unique )|
@@ -3650,18 +3648,6 @@ select 'Caught it' as 'Result';
 call bug7049_3();
 select 'Missed it' as 'Result';
 end|
-create procedure bug7049_5()
-begin
-declare x decimal(2,1);
-set x = 'zap';
-end|
-create procedure bug7049_6()
-begin
-declare exit handler for sqlwarning
-select 'Caught it' as 'Result';
-call bug7049_5();
-select 'Missed it' as 'Result';
-end|
 create function bug7049_1()
 returns int
 begin
@@ -3691,9 +3677,6 @@ Caught it
 select * from t3|
 x
 42
-call bug7049_6()|
-Result
-Caught it
 select bug7049_2()|
 bug7049_2()
 1
@@ -3702,8 +3685,6 @@ drop procedure bug7049_1|
 drop procedure bug7049_2|
 drop procedure bug7049_3|
 drop procedure bug7049_4|
-drop procedure bug7049_5|
-drop procedure bug7049_6|
 drop function bug7049_1|
 drop function bug7049_2|
 drop function if exists bug13941|
@@ -4387,4 +4368,143 @@ id	county
 2	NULL
 drop table t3|
 drop procedure bug15441|
+drop procedure if exists bug14498_1|
+drop procedure if exists bug14498_2|
+drop procedure if exists bug14498_3|
+drop procedure if exists bug14498_4|
+drop procedure if exists bug14498_5|
+create procedure bug14498_1()
+begin
+declare continue handler for sqlexception select 'error' as 'Handler';
+if v then
+select 'yes' as 'v';
+else
+select 'no' as 'v';
+end if;
+select 'done' as 'End';
+end|
+create procedure bug14498_2()
+begin
+declare continue handler for sqlexception select 'error' as 'Handler';
+while v do
+select 'yes' as 'v';
+end while;
+select 'done' as 'End';
+end|
+create procedure bug14498_3()
+begin
+declare continue handler for sqlexception select 'error' as 'Handler';
+repeat
+select 'maybe' as 'v';
+until v end repeat;
+select 'done' as 'End';
+end|
+create procedure bug14498_4()
+begin
+declare continue handler for sqlexception select 'error' as 'Handler';
+case v
+when 1 then
+select '1' as 'v';
+when 2 then
+select '2' as 'v';
+else
+select '?' as 'v';
+end case;
+select 'done' as 'End';
+end|
+create procedure bug14498_5()
+begin
+declare continue handler for sqlexception select 'error' as 'Handler';
+case
+when v = 1 then
+select '1' as 'v';
+when v = 2 then
+select '2' as 'v';
+else
+select '?' as 'v';
+end case;
+select 'done' as 'End';
+end|
+call bug14498_1()|
+Handler
+error
+End
+done
+call bug14498_2()|
+Handler
+error
+End
+done
+call bug14498_3()|
+v
+maybe
+Handler
+error
+End
+done
+call bug14498_5()|
+Handler
+error
+End
+done
+drop procedure bug14498_1|
+drop procedure bug14498_2|
+drop procedure bug14498_3|
+drop procedure bug14498_4|
+drop procedure bug14498_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|
+create table t3 (id int not null)|
+create procedure bug15231_1()
+begin
+declare xid integer;
+declare xdone integer default 0;
+declare continue handler for not found set xdone = 1;
+set xid=null;
+call bug15231_2(xid);
+select xid, xdone;
+end|
+create procedure bug15231_2(inout ioid integer)
+begin
+select "Before NOT FOUND condition is triggered" as '1';
+select id into ioid from t3 where id=ioid;
+select "After NOT FOUND condtition is triggered" as '2';
+if ioid is null then
+set ioid=1;
+end if;
+end|
+create procedure bug15231_3()
+begin
+declare exit handler for sqlwarning
+select 'Caught it (wrong)' as 'Result';
+call bug15231_4();
+end|
+create procedure bug15231_4()
+begin
+declare x decimal(2,1);
+set x = 'zap';
+select 'Missed it (correct)' as 'Result';
+end|
+call bug15231_1()|
+1
+Before NOT FOUND condition is triggered
+2
+After NOT FOUND condtition is triggered
+xid	xdone
+1	0
+Warnings:
+Warning	1329	No data to FETCH
+call bug15231_3()|
+Result
+Missed it (correct)
+Warnings:
+Warning	1366	Incorrect decimal value: 'zap' for column 'x' at row 1
+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 t1,t2;
diff --git a/mysql-test/r/type_decimal.result b/mysql-test/r/type_decimal.result
index d7f5f9fa328..df5abfe8ae3 100644
--- a/mysql-test/r/type_decimal.result
+++ b/mysql-test/r/type_decimal.result
@@ -772,3 +772,16 @@ productid	zlevelprice
 003trans	39.98
 004trans	31.18
 drop table t1, t2;
+create table t1 (a double(53,0));
+insert into t1 values (9988317491112007680) ,(99883133042600208184115200);
+select a from t1;
+a
+9988317491112007680
+99883133042600208184115200
+truncate t1;
+insert into t1 values (9988317491112007680.0) ,(99883133042600208184115200.0);
+select a from t1;
+a
+9988317491112007680
+99883133042600208184115200
+drop table t1;
diff --git a/mysql-test/t/alter_table.test b/mysql-test/t/alter_table.test
index f4245abfe86..cfa6182543b 100644
--- a/mysql-test/t/alter_table.test
+++ b/mysql-test/t/alter_table.test
@@ -412,3 +412,13 @@ create table t1 (mycol int(10) not null);
 alter table t1 alter column mycol set default 0;
 desc t1;
 drop table t1;
+
+#
+# Bug#6073 "ALTER table minor glich": ALTER TABLE complains that an index
+# without # prefix is not allowed for TEXT columns, while index
+# is defined with prefix.
+# 
+create table t1 (t varchar(255) default null, key t (t(80)))
+engine=myisam default charset=latin1;
+alter table t1 change t t text;
+drop table t1;
diff --git a/mysql-test/t/create.test b/mysql-test/t/create.test
index 162db3d0c0a..f7b9002faa0 100644
--- a/mysql-test/t/create.test
+++ b/mysql-test/t/create.test
@@ -504,6 +504,13 @@ CREATE TABLE t2 AS SELECT LEFT(f1,171) AS f2 FROM t1 UNION SELECT LEFT(f1,171) A
 DESC t2;
 DROP TABLE t1,t2;
 
+#
+# Bug#12913 Simple SQL can crash server or connection
+#
+CREATE TABLE t12913 (f1 ENUM ('a','b')) AS SELECT 'a' AS f1;
+SELECT * FROM t12913;
+DROP TABLE t12913;
+
 #
 # Bug#11028: Crash on create table like
 #
diff --git a/mysql-test/t/sp.test b/mysql-test/t/sp.test
index a1eba73635e..68ce9cdb118 100644
--- a/mysql-test/t/sp.test
+++ b/mysql-test/t/sp.test
@@ -3824,7 +3824,7 @@ drop procedure if exists bug7088_2|
 
 --disable_parsing # temporarily disabled until Bar fixes BUG#11986
 create procedure bug6063()
-  lâbel: begin end|
+  lâbel: begin end|
 call bug6063()|
 # QQ Known bug: this will not show the label correctly.
 show create procedure bug6063|
@@ -4364,8 +4364,6 @@ drop procedure if exists bug7049_1|
 drop procedure if exists bug7049_2|
 drop procedure if exists bug7049_3|
 drop procedure if exists bug7049_4|
-drop procedure if exists bug7049_5|
-drop procedure if exists bug7049_6|
 drop function if exists bug7049_1|
 drop function if exists bug7049_2|
 --enable_warnings
@@ -4399,22 +4397,6 @@ begin
   select 'Missed it' as 'Result';
 end|
 
-create procedure bug7049_5()
-begin
-  declare x decimal(2,1);
-
-  set x = 'zap';
-end|
-
-create procedure bug7049_6()
-begin
-  declare exit handler for sqlwarning
-    select 'Caught it' as 'Result';
-
-  call bug7049_5();
-  select 'Missed it' as 'Result';
-end|
-
 create function bug7049_1()
   returns int
 begin
@@ -4439,7 +4421,6 @@ select * from t3|
 delete from t3|
 call bug7049_4()|
 select * from t3|
-call bug7049_6()|
 select bug7049_2()|
 
 drop table t3|
@@ -4447,8 +4428,6 @@ drop procedure bug7049_1|
 drop procedure bug7049_2|
 drop procedure bug7049_3|
 drop procedure bug7049_4|
-drop procedure bug7049_5|
-drop procedure bug7049_6|
 drop function bug7049_1|
 drop function bug7049_2|
 
@@ -5154,6 +5133,155 @@ call bug15441('Yale')|
 drop table t3|
 drop procedure bug15441|
 
+#
+# BUG#14498: Stored procedures: hang if undefined variable and exception
+#
+--disable_warnings
+drop procedure if exists bug14498_1|
+drop procedure if exists bug14498_2|
+drop procedure if exists bug14498_3|
+drop procedure if exists bug14498_4|
+drop procedure if exists bug14498_5|
+--enable_warnings
+
+create procedure bug14498_1()
+begin
+  declare continue handler for sqlexception select 'error' as 'Handler';
+
+  if v then
+    select 'yes' as 'v';
+  else
+    select 'no' as 'v';
+  end if;
+  select 'done' as 'End';
+end|
+
+create procedure bug14498_2()
+begin
+  declare continue handler for sqlexception select 'error' as 'Handler';
+
+  while v do
+    select 'yes' as 'v';
+  end while;
+  select 'done' as 'End';
+end|
+
+create procedure bug14498_3()
+begin
+  declare continue handler for sqlexception select 'error' as 'Handler';
+
+  repeat
+    select 'maybe' as 'v';
+  until v end repeat;
+  select 'done' as 'End';
+end|
+
+create procedure bug14498_4()
+begin
+  declare continue handler for sqlexception select 'error' as 'Handler';
+
+  case v
+  when 1 then
+    select '1' as 'v';
+  when 2 then
+    select '2' as 'v';
+  else
+    select '?' as 'v';
+  end case;
+  select 'done' as 'End';
+end|
+
+create procedure bug14498_5()
+begin
+  declare continue handler for sqlexception select 'error' as 'Handler';
+
+  case
+  when v = 1 then
+    select '1' as 'v';
+  when v = 2 then
+    select '2' as 'v';
+  else
+    select '?' as 'v';
+  end case;
+  select 'done' as 'End';
+end|
+
+call bug14498_1()|
+call bug14498_2()|
+call bug14498_3()|
+# We couldn't call this before, due to a known bug (BUG#14643)
+# QQ We still can't since the new set_case_expr instruction breaks
+#    the semantics of case; it won't crash, but will get the wrong result.
+#call bug14498_4()|
+call bug14498_5()|
+
+drop procedure bug14498_1|
+drop procedure bug14498_2|
+drop procedure bug14498_3|
+drop procedure bug14498_4|
+drop procedure bug14498_5|
+
+#
+# BUG#15231: Stored procedure bug with not found condition handler
+#
+--disable_warnings
+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|
+--enable_warnings
+
+create table t3 (id int not null)|
+  
+create procedure bug15231_1()
+begin
+  declare xid integer;
+  declare xdone integer default 0;
+  declare continue handler for not found set xdone = 1;
+
+  set xid=null;
+  call bug15231_2(xid);
+  select xid, xdone;
+end|
+
+create procedure bug15231_2(inout ioid integer)
+begin
+  select "Before NOT FOUND condition is triggered" as '1';
+  select id into ioid from t3 where id=ioid;
+  select "After NOT FOUND condtition is triggered" as '2';
+
+  if ioid is null then
+    set ioid=1;
+  end if;
+end|
+
+create procedure bug15231_3()
+begin
+  declare exit handler for sqlwarning
+    select 'Caught it (wrong)' as 'Result';
+
+  call bug15231_4();
+end|
+
+create procedure bug15231_4()
+begin
+  declare x decimal(2,1);
+
+  set x = 'zap';
+  select 'Missed it (correct)' as 'Result';
+end|
+
+call bug15231_1()|
+call bug15231_3()|
+
+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|
+
+
 #
 # BUG#NNNN: New bug synopsis
 #
diff --git a/mysql-test/t/type_decimal.test b/mysql-test/t/type_decimal.test
index 1f6310cb819..e06b828f9e6 100644
--- a/mysql-test/t/type_decimal.test
+++ b/mysql-test/t/type_decimal.test
@@ -376,3 +376,16 @@ insert INTO t2 SELECT * FROM t1;
 
 select * from t2; 
 drop table t1, t2;
+
+# 
+# A test case for Bug#7670 "Loss of precision for some integer values stored
+# into DOUBLE column": check that there is no truncation
+# when inserting big integers into double columns.
+#
+create table t1 (a double(53,0));
+insert into t1 values (9988317491112007680) ,(99883133042600208184115200);
+select a from t1;
+truncate t1;
+insert into t1 values (9988317491112007680.0) ,(99883133042600208184115200.0);
+select a from t1;
+drop table t1;
diff --git a/sql/sp_head.cc b/sql/sp_head.cc
index 96bf2c51b02..8853ee97e98 100644
--- a/sql/sp_head.cc
+++ b/sql/sp_head.cc
@@ -430,7 +430,8 @@ sp_head::operator delete(void *ptr, size_t size)
 sp_head::sp_head()
   :Query_arena(&main_mem_root, INITIALIZED_FOR_SP),
    m_flags(0), m_recursion_level(0), m_next_cached_sp(0),
-   m_first_instance(this), m_first_free_instance(this), m_last_cached_sp(this)
+   m_first_instance(this), m_first_free_instance(this), m_last_cached_sp(this),
+   m_cont_level(0)
 {
   m_return_field_def.charset = NULL;
 
@@ -439,6 +440,7 @@ sp_head::sp_head()
   DBUG_ENTER("sp_head::sp_head");
 
   m_backpatch.empty();
+  m_cont_backpatch.empty();
   m_lex.empty();
   hash_init(&m_sptabs, system_charset_info, 0, 0, 0, sp_table_key, 0, 0);
   hash_init(&m_sroutines, system_charset_info, 0, 0, 0, sp_sroutine_key, 0, 0);
@@ -1735,6 +1737,39 @@ sp_head::fill_field_definition(THD *thd, LEX *lex,
 }
 
 
+void
+sp_head::new_cont_backpatch(sp_instr_jump_if_not *i)
+{
+  m_cont_level+= 1;
+  if (i)
+  {
+    /* Use the cont. destination slot to store the level */
+    i->m_cont_dest= m_cont_level;
+    (void)m_cont_backpatch.push_front(i);
+  }
+}
+
+void
+sp_head::add_cont_backpatch(sp_instr_jump_if_not *i)
+{
+  i->m_cont_dest= m_cont_level;
+  (void)m_cont_backpatch.push_front(i);
+}
+
+void
+sp_head::do_cont_backpatch()
+{
+  uint dest= instructions();
+  uint lev= m_cont_level--;
+  sp_instr_jump_if_not *i;
+
+  while ((i= m_cont_backpatch.head()) && i->m_cont_dest == lev)
+  {
+    i->m_cont_dest= dest;
+    (void)m_cont_backpatch.pop();
+  }
+}
+
 void
 sp_head::set_info(longlong created, longlong modified,
 		  st_sp_chistics *chistics, ulong sql_mode)
@@ -1949,7 +1984,10 @@ sp_head::show_create_function(THD *thd)
 
 
 /*
-  TODO: what does this do??
+  Do some minimal optimization of the code:
+    1) Mark used instructions
+       1.1) While doing this, shortcut jumps to jump instructions
+    2) Compact the code, removing unused instructions
 */
 
 void sp_head::optimize()
@@ -1972,7 +2010,7 @@ void sp_head::optimize()
     else
     {
       if (src != dst)
-      {
+      {                         // Move the instruction and update prev. jumps
 	sp_instr *ibp;
 	List_iterator_fast<sp_instr> li(bp);
 
@@ -1980,8 +2018,7 @@ void sp_head::optimize()
 	while ((ibp= li++))
 	{
 	  sp_instr_jump *ji= static_cast<sp_instr_jump *>(ibp);
-	  if (ji->m_dest == src)
-	    ji->m_dest= dst;
+          ji->set_destination(src, dst);
 	}
       }
       i->opt_move(dst, &bp);
@@ -2414,67 +2451,6 @@ sp_instr_jump::opt_move(uint dst, List<sp_instr> *bp)
 }
 
 
-/*
-  sp_instr_jump_if class functions
-*/
-
-int
-sp_instr_jump_if::execute(THD *thd, uint *nextp)
-{
-  DBUG_ENTER("sp_instr_jump_if::execute");
-  DBUG_PRINT("info", ("destination: %u", m_dest));
-  DBUG_RETURN(m_lex_keeper.reset_lex_and_exec_core(thd, nextp, TRUE, this));
-}
-
-int
-sp_instr_jump_if::exec_core(THD *thd, uint *nextp)
-{
-  Item *it;
-  int res;
-
-  it= sp_prepare_func_item(thd, &m_expr);
-  if (!it)
-    res= -1;
-  else
-  {
-    res= 0;
-    if (it->val_bool())
-      *nextp = m_dest;
-    else
-      *nextp = m_ip+1;
-  }
-
-  return res;
-}
-
-void
-sp_instr_jump_if::print(String *str)
-{
-  /* jump_if dest ... */
-  if (str->reserve(SP_INSTR_UINT_MAXLEN+8+32)) // Add some for the expr. too
-    return;
-  str->qs_append(STRING_WITH_LEN("jump_if "));
-  str->qs_append(m_dest);
-  str->qs_append(' ');
-  m_expr->print(str);
-}
-
-uint
-sp_instr_jump_if::opt_mark(sp_head *sp)
-{
-  sp_instr *i;
-
-  marked= 1;
-  if ((i= sp->get_instr(m_dest)))
-  {
-    m_dest= i->opt_shortcut_jump(sp, this);
-    m_optdest= sp->get_instr(m_dest);
-  }
-  sp->opt_mark(m_dest);
-  return m_ip+1;
-}
-
-
 /*
   sp_instr_jump_if_not class functions
 */
@@ -2496,7 +2472,10 @@ sp_instr_jump_if_not::exec_core(THD *thd, uint *nextp)
 
   it= sp_prepare_func_item(thd, &m_expr);
   if (! it)
+  {
     res= -1;
+    *nextp = m_cont_dest;
+  }
   else
   {
     res= 0;
@@ -2514,11 +2493,13 @@ void
 sp_instr_jump_if_not::print(String *str)
 {
   /* jump_if_not dest ... */
-  if (str->reserve(SP_INSTR_UINT_MAXLEN+12+32)) // Add some for the expr. too
+  if (str->reserve(2*SP_INSTR_UINT_MAXLEN+14+32)) // Add some for the expr. too
     return;
   str->qs_append(STRING_WITH_LEN("jump_if_not "));
   str->qs_append(m_dest);
-  str->qs_append(' ');
+  str->append('(');
+  str->qs_append(m_cont_dest);
+  str->append(") ");
   m_expr->print(str);
 }
 
@@ -2535,9 +2516,35 @@ sp_instr_jump_if_not::opt_mark(sp_head *sp)
     m_optdest= sp->get_instr(m_dest);
   }
   sp->opt_mark(m_dest);
+  if ((i= sp->get_instr(m_cont_dest)))
+  {
+    m_cont_dest= i->opt_shortcut_jump(sp, this);
+    m_cont_optdest= sp->get_instr(m_cont_dest);
+  }
+  sp->opt_mark(m_cont_dest);
   return m_ip+1;
 }
 
+void
+sp_instr_jump_if_not::opt_move(uint dst, List<sp_instr> *bp)
+{
+  /*
+    cont. destinations may point backwards after shortcutting jumps
+    during the mark phase. If it's still pointing forwards, only
+    push this for backpatching if sp_instr_jump::opt_move() will not
+    do it (i.e. if the m_dest points backwards).
+   */
+  if (m_cont_dest > m_ip)
+  {                             // Forward
+    if (m_dest < m_ip)
+      bp->push_back(this);
+  }
+  else if (m_cont_optdest)
+    m_cont_dest= m_cont_optdest->m_ip; // Backward
+  /* This will take care of m_dest and m_ip */
+  sp_instr_jump::opt_move(dst, bp);
+}
+
 
 /*
   sp_instr_freturn class functions
diff --git a/sql/sp_head.h b/sql/sp_head.h
index 2eebd35f6dc..bd50afebde7 100644
--- a/sql/sp_head.h
+++ b/sql/sp_head.h
@@ -41,6 +41,7 @@ sp_get_flags_for_command(LEX *lex);
 
 struct sp_label;
 class sp_instr;
+class sp_instr_jump_if_not;
 struct sp_cond_type;
 struct sp_pvar;
 
@@ -266,6 +267,18 @@ public:
   int
   check_backpatch(THD *thd);
 
+  // Start a new cont. backpatch level. If 'i' is NULL, the level is just incr.
+  void
+  new_cont_backpatch(sp_instr_jump_if_not *i);
+
+  // Add an instruction to the current level
+  void
+  add_cont_backpatch(sp_instr_jump_if_not *i);
+
+  // Backpatch (and pop) the current level to the current position.
+  void
+  do_cont_backpatch();
+
   char *name(uint *lenp = 0) const
   {
     if (lenp)
@@ -356,6 +369,18 @@ private:
     sp_instr *instr;
   } bp_t;
   List<bp_t> m_backpatch;	// Instructions needing backpatching
+  /*
+    We need a special list for backpatching of conditional jump's continue
+    destination (in the case of a continue handler catching an error in
+    the test), since it would otherwise interfere with the normal backpatch
+    mechanism - jump_if_not instructions have two different destination
+    which are to be patched differently.
+    Since these occur in a more restricted way (always the same "level" in
+    the code), we don't need the label.
+   */
+  List<sp_instr_jump_if_not> m_cont_backpatch;
+  uint m_cont_level;            // The current cont. backpatch level
+
   /*
     Multi-set representing optimized list of tables to be locked by this
     routine. Does not include tables which are used by invoked routines.
@@ -669,6 +694,12 @@ public:
       m_dest= dest;
   }
 
+  virtual void set_destination(uint old_dest, uint new_dest)
+  {
+    if (m_dest == old_dest)
+      m_dest= new_dest;
+  }
+
 protected:
 
   sp_instr *m_optdest;		// Used during optimization
@@ -676,45 +707,6 @@ protected:
 }; // class sp_instr_jump : public sp_instr
 
 
-class sp_instr_jump_if : public sp_instr_jump
-{
-  sp_instr_jump_if(const sp_instr_jump_if &); /* Prevent use of these */
-  void operator=(sp_instr_jump_if &);
-
-public:
-
-  sp_instr_jump_if(uint ip, sp_pcontext *ctx, Item *i, LEX *lex)
-    : sp_instr_jump(ip, ctx), m_expr(i), m_lex_keeper(lex, TRUE)
-  {}
-
-  sp_instr_jump_if(uint ip, sp_pcontext *ctx, Item *i, uint dest, LEX *lex)
-    : sp_instr_jump(ip, ctx, dest), m_expr(i), m_lex_keeper(lex, TRUE)
-  {}
-
-  virtual ~sp_instr_jump_if()
-  {}
-
-  virtual int execute(THD *thd, uint *nextp);
-
-  virtual int exec_core(THD *thd, uint *nextp);
-
-  virtual void print(String *str);
-
-  virtual uint opt_mark(sp_head *sp);
-
-  virtual uint opt_shortcut_jump(sp_head *sp, sp_instr *start)
-  {
-    return m_ip;
-  }
-
-private:
-
-  Item *m_expr;			// The condition
-  sp_lex_keeper m_lex_keeper;
-
-}; // class sp_instr_jump_if : public sp_instr_jump
-
-
 class sp_instr_jump_if_not : public sp_instr_jump
 {
   sp_instr_jump_if_not(const sp_instr_jump_if_not &); /* Prevent use of these */
@@ -722,12 +714,16 @@ class sp_instr_jump_if_not : public sp_instr_jump
 
 public:
 
+  uint m_cont_dest;             // Where continue handlers will go
+
   sp_instr_jump_if_not(uint ip, sp_pcontext *ctx, Item *i, LEX *lex)
-    : sp_instr_jump(ip, ctx), m_expr(i), m_lex_keeper(lex, TRUE)
+    : sp_instr_jump(ip, ctx), m_cont_dest(0), m_expr(i),
+      m_lex_keeper(lex, TRUE), m_cont_optdest(0)
   {}
 
   sp_instr_jump_if_not(uint ip, sp_pcontext *ctx, Item *i, uint dest, LEX *lex)
-    : sp_instr_jump(ip, ctx, dest), m_expr(i), m_lex_keeper(lex, TRUE)
+    : sp_instr_jump(ip, ctx, dest), m_cont_dest(0), m_expr(i),
+      m_lex_keeper(lex, TRUE), m_cont_optdest(0)
   {}
 
   virtual ~sp_instr_jump_if_not()
@@ -746,10 +742,20 @@ public:
     return m_ip;
   }
 
+  virtual void opt_move(uint dst, List<sp_instr> *ibp);
+
+  virtual void set_destination(uint old_dest, uint new_dest)
+  {
+    sp_instr_jump::set_destination(old_dest, new_dest);
+    if (m_cont_dest == old_dest)
+      m_cont_dest= new_dest;
+  }
+
 private:
 
   Item *m_expr;			// The condition
   sp_lex_keeper m_lex_keeper;
+  sp_instr *m_cont_optdest;     // Used during optimization
 
 }; // class sp_instr_jump_if_not : public sp_instr_jump
 
diff --git a/sql/sp_pcontext.h b/sql/sp_pcontext.h
index 6d803362d86..d1cd7b964c2 100644
--- a/sql/sp_pcontext.h
+++ b/sql/sp_pcontext.h
@@ -52,6 +52,15 @@ typedef struct sp_pvar
 #define SP_LAB_BEGIN 2		// Label at BEGIN
 #define SP_LAB_ITER  3		// Label at iteration control
 
+/*
+  An SQL/PSM label. Can refer to the identifier used with the
+  "label_name:" construct which may precede some SQL/PSM statements, or
+  to an implicit implementation-dependent identifier which the parser
+  inserts before a high-level flow control statement such as
+  IF/WHILE/REPEAT/LOOP, when such statement is rewritten into
+  a combination of low-level jump/jump_if instructions and labels.
+*/
+
 typedef struct sp_label
 {
   char *name;
diff --git a/sql/sp_rcontext.cc b/sql/sp_rcontext.cc
index eca87e69f8e..215de01e657 100644
--- a/sql/sp_rcontext.cc
+++ b/sql/sp_rcontext.cc
@@ -160,6 +160,10 @@ sp_rcontext::set_return_value(THD *thd, Item *return_value_item)
 }
 
 
+#define IS_WARNING_CONDITION(S)   ((S)[0] == '0' && (S)[1] == '1')
+#define IS_NOT_FOUND_CONDITION(S) ((S)[0] == '0' && (S)[1] == '2')
+#define IS_EXCEPTION_CONDITION(S) ((S)[0] != '0' || (S)[1] > '2')
+
 bool
 sp_rcontext::find_handler(uint sql_errno,
                           MYSQL_ERROR::enum_warning_level level)
@@ -193,18 +197,17 @@ sp_rcontext::find_handler(uint sql_errno,
 	found= i;
       break;
     case sp_cond_type_t::warning:
-      if ((sqlstate[0] == '0' && sqlstate[1] == '1' ||
-	   level == MYSQL_ERROR::WARN_LEVEL_WARN) &&
-	  found < 0)
+      if ((IS_WARNING_CONDITION(sqlstate) ||
+           level == MYSQL_ERROR::WARN_LEVEL_WARN) &&
+          found < 0)
 	found= i;
       break;
     case sp_cond_type_t::notfound:
-      if (sqlstate[0] == '0' && sqlstate[1] == '2' &&
-	  found < 0)
+      if (IS_NOT_FOUND_CONDITION(sqlstate) && found < 0)
 	found= i;
       break;
     case sp_cond_type_t::exception:
-      if ((sqlstate[0] != '0' || sqlstate[1] > '2') &&
+      if (IS_EXCEPTION_CONDITION(sqlstate) &&
 	  level == MYSQL_ERROR::WARN_LEVEL_ERROR &&
 	  found < 0)
 	found= i;
@@ -213,7 +216,13 @@ sp_rcontext::find_handler(uint sql_errno,
   }
   if (found < 0)
   {
-    if (m_prev_runtime_ctx)
+    /*
+      Only "exception conditions" are propagated to handlers in calling
+      contexts. If no handler is found locally for a "completion condition"
+      (warning or "not found") we will simply resume execution.
+    */
+    if (m_prev_runtime_ctx && IS_EXCEPTION_CONDITION(sqlstate) &&
+        level == MYSQL_ERROR::WARN_LEVEL_ERROR)
       return m_prev_runtime_ctx->find_handler(sql_errno, level);
     return FALSE;
   }
diff --git a/sql/sql_handler.cc b/sql/sql_handler.cc
index e9e1e79daaf..1cd7778a053 100644
--- a/sql/sql_handler.cc
+++ b/sql/sql_handler.cc
@@ -421,12 +421,13 @@ bool mysql_ha_read(THD *thd, TABLE_LIST *tables,
   if (!lock)
     goto err0; // mysql_lock_tables() printed error message already
 
-  if (cond && ((!cond->fixed &&
-                cond->fix_fields(thd, &cond)) || cond->check_cols(1)))
+  if (cond)
   {
     if (table->query_id != thd->query_id)
       cond->cleanup();                          // File was reopened
-    goto err0;
+    if ((!cond->fixed &&
+	 cond->fix_fields(thd, &cond)) || cond->check_cols(1))
+      goto err0;
   }
 
   if (keyname)
diff --git a/sql/sql_table.cc b/sql/sql_table.cc
index 849619ae0f8..b1a24543a6b 100644
--- a/sql/sql_table.cc
+++ b/sql/sql_table.cc
@@ -886,6 +886,7 @@ static int mysql_prepare_table(THD *thd, HA_CREATE_INFO *create_info,
           if (!(sql_field->flags & NOT_NULL_FLAG))
             null_fields--;
 	  sql_field->flags=		dup_field->flags;
+          sql_field->interval=          dup_field->interval;
 	  it2.remove();			// Remove first (create) definition
 	  select_field_pos--;
 	  break;
diff --git a/sql/sql_yacc.yy b/sql/sql_yacc.yy
index 49f2182e12a..714be26887c 100644
--- a/sql/sql_yacc.yy
+++ b/sql/sql_yacc.yy
@@ -1982,14 +1982,21 @@ sp_proc_stmt:
 	    }
 	    sp->restore_lex(YYTHD);
 	  }
-	| IF sp_if END IF {}
+        | IF
+          { Lex->sphead->new_cont_backpatch(NULL); }
+          sp_if END IF
+          { Lex->sphead->do_cont_backpatch(); }
 	| CASE_SYM WHEN_SYM
 	  {
 	    Lex->sphead->m_flags&= ~sp_head::IN_SIMPLE_CASE;
+            Lex->sphead->new_cont_backpatch(NULL);
 	  }
-	  sp_case END CASE_SYM {}
+          sp_case END CASE_SYM { Lex->sphead->do_cont_backpatch(); }
         | CASE_SYM
-          { Lex->sphead->reset_lex(YYTHD); }
+          {
+            Lex->sphead->reset_lex(YYTHD);
+            Lex->sphead->new_cont_backpatch(NULL);
+          }
           expr WHEN_SYM
 	  {
 	    LEX *lex= Lex;
@@ -2013,6 +2020,7 @@ sp_proc_stmt:
 	  sp_case END CASE_SYM
 	  {
 	    Lex->spcont->pop_case_expr_id();
+            Lex->sphead->do_cont_backpatch();
 	  }
 	| sp_labeled_control
 	  {}
@@ -2281,6 +2289,7 @@ sp_if:
                                                                $2, lex);
 
 	    sp->push_backpatch(i, ctx->push_label((char *)"", 0));
+            sp->add_cont_backpatch(i);
             sp->add_instr(i);
             sp->restore_lex(YYTHD);
 	  }
@@ -2339,6 +2348,7 @@ sp_case:
 	      i= new sp_instr_jump_if_not(ip, ctx, expr, lex);
 	    }
 	    sp->push_backpatch(i, ctx->push_label((char *)"", 0));
+            sp->add_cont_backpatch(i);
             sp->add_instr(i);
             sp->restore_lex(YYTHD);
 	  }
@@ -2468,6 +2478,7 @@ sp_unlabeled_control:
 
 	    /* Jumping forward */
 	    sp->push_backpatch(i, lex->spcont->last_label());
+            sp->new_cont_backpatch(i);
             sp->add_instr(i);
             sp->restore_lex(YYTHD);
 	  }
@@ -2479,6 +2490,7 @@ sp_unlabeled_control:
 	    sp_instr_jump *i = new sp_instr_jump(ip, lex->spcont, lab->ip);
 
 	    lex->sphead->add_instr(i);
+            lex->sphead->do_cont_backpatch();
 	  }
         | REPEAT_SYM sp_proc_stmts1 UNTIL_SYM 
           { Lex->sphead->reset_lex(YYTHD); }
@@ -2492,6 +2504,8 @@ sp_unlabeled_control:
                                                                lex);
             lex->sphead->add_instr(i);
             lex->sphead->restore_lex(YYTHD);
+            /* We can shortcut the cont_backpatch here */
+            i->m_cont_dest= ip+1;
 	  }
 	;