Fixed BUG#6029: Stored procedure specific handlers should have priority.

mysql-test/r/sp.result:
  New test case for BUG#6022.
mysql-test/t/sp.test:
  New test case for BUG#6022.
sql/sp_rcontext.cc:
  Find the most specific condition handler, not just the first one.
  (And corrected the return type for find_handler)
sql/sp_rcontext.h:
  Corrected return type for find_handler.

mysql-test/r/sp.result

@@ -1947,6 +1947,26 @@ select bug6022(5)|
 bug6022(5)
 0
 drop function bug6022|
+drop procedure if exists bug6029|
+create procedure bug6029()
+begin
+declare exit handler for 1136  select '1136';
+declare exit handler for sqlstate '23000'  select 'sqlstate 23000';
+declare continue handler for sqlexception  select 'sqlexception';
+insert into t3 values (1);
+insert into t3 values (1,2);
+end|
+create table t3 (s1 int, primary key (s1))|
+insert into t3 values (1)|
+call bug6029()|
+sqlstate 23000
+sqlstate 23000
+delete from t3|
+call bug6029()|
+1136
+1136
+drop procedure bug6029|
+drop table t3|
 drop table if exists fac|
 create table fac (n int unsigned not null primary key, f bigint unsigned)|
 create procedure ifac(n int unsigned)

mysql-test/t/sp.test

@@ -2109,6 +2109,32 @@ end|
 select bug6022(5)|
 drop function bug6022|
 
+#
+# BUG#6029: Stored procedure specific handlers should have priority
+#
+--disable_warnings
+drop procedure if exists bug6029|
+--enable_warnings
+
+create procedure bug6029()
+begin
+  declare exit handler for 1136  select '1136';
+  declare exit handler for sqlstate '23000'  select 'sqlstate 23000';
+  declare continue handler for sqlexception  select 'sqlexception';
+
+  insert into t3 values (1);
+  insert into t3 values (1,2);
+end|
+ 
+create table t3 (s1 int, primary key (s1))|
+insert into t3 values (1)|
+call bug6029()|
+delete from t3|
+call bug6029()|
+
+drop procedure bug6029|
+drop table t3|
+
 
 #
 # Some "real" examples

sql/sp_rcontext.cc

@@ -56,7 +56,7 @@ sp_rcontext::set_item_eval(uint idx, Item *i, enum_field_types type)
   }
 }
 
-int
+bool
 sp_rcontext::find_handler(uint sql_errno,
                           MYSQL_ERROR::enum_warning_level level)
 {
@@ -66,9 +66,9 @@ sp_rcontext::find_handler(uint sql_errno,
     return 1;			// Already got one
 
   const char *sqlstate= mysql_errno_to_sqlstate(sql_errno);
-  int i= m_hcount, found= 0;
+  int i= m_hcount, found= -1;
 
-  while (!found && i--)
+  while (i--)
   {
     sp_cond_type_t *cond= m_handler[i].cond;
 
@@ -76,31 +76,36 @@ sp_rcontext::find_handler(uint sql_errno,
     {
     case sp_cond_type_t::number:
       if (sql_errno == cond->mysqlerr)
-	found= 1;
+	found= i;		// Always the most specific
       break;
     case sp_cond_type_t::state:
-      if (strcmp(sqlstate, cond->sqlstate) == 0)
-	found= 1;
+      if (strcmp(sqlstate, cond->sqlstate) == 0 &&
+	  (found < 0 || m_handler[found].cond->type > sp_cond_type_t::number))
+	found= i;
       break;
     case sp_cond_type_t::warning:
-      if (sqlstate[0] == '0' && sqlstate[1] == '1' ||
-          level == MYSQL_ERROR::WARN_LEVEL_WARN)
-	found= 1;
+      if ((sqlstate[0] == '0' && sqlstate[1] == '1' ||
+	   level == MYSQL_ERROR::WARN_LEVEL_WARN) &&
+	  (found < 0 || m_handler[found].cond->type > sp_cond_type_t::state))
+	found= i;
       break;
     case sp_cond_type_t::notfound:
-      if (sqlstate[0] == '0' && sqlstate[1] == '2')
-	found= 1;
+      if (sqlstate[0] == '0' && sqlstate[1] == '2' &&
+	  (found < 0 || m_handler[found].cond->type > sp_cond_type_t::state))
+	found= i;
       break;
     case sp_cond_type_t::exception:
-      if (sqlstate[0] != '0' || sqlstate[1] > '2' ||
-          level == MYSQL_ERROR::WARN_LEVEL_ERROR)
-	found= 1;
+      if ((sqlstate[0] != '0' || sqlstate[1] > '2' ||
+	   level == MYSQL_ERROR::WARN_LEVEL_ERROR) &&
+	  (found < 0 || m_handler[found].cond->type > sp_cond_type_t::state))
+	found= i;
       break;
     }
   }
-  if (found)
-    m_hfound= i;
-  return found;
+  if (found < 0)
+    return FALSE;
+  m_hfound= found;
+  return TRUE;
 }
 
 void

sql/sp_rcontext.h

@@ -122,7 +122,7 @@ class sp_rcontext : public Sql_alloc
   }
 
   // Returns 1 if a handler was found, 0 otherwise.
-  int
+  bool
   find_handler(uint sql_errno,MYSQL_ERROR::enum_warning_level level);
 
   // Returns handler type and sets *ip to location if one was found