post-merge changes, fixes, and tests

mysql-test/r/blackhole.result

@@ -8,4 +8,11 @@ CREATE TABLE t2 (a INT UNSIGNED, b INT, UNIQUE KEY (a, b)) ENGINE=BLACKHOLE;
 SELECT 1 FROM t1 WHERE a = ANY (SELECT a FROM t2);
 1
 DROP TABLE t1, t2;
+create temporary table t1 (a int) engine=blackhole;
+lock table t1 write;
+truncate table t1;
+select * from t1;
+a
+unlock tables;
+drop temporary table t1;
 End of 5.5 tests 

mysql-test/r/group_by.result

@@ -2339,6 +2339,16 @@ MIN(a)	b
 0	a
 
 DROP TABLE t1;
+create table t1 (a int, b int);
+insert into t1 values (1,11), (1,12), (2,22),(2,23), (4,44),(4,45);
+create table t2 (c int, d int);
+insert into t2 values (1,11), (1,12), (2,22),(2,23), (4,44),(4,45);
+select distinct a,sum(b), (select d from t2 where c=a order by max(b) limit 1) from t1 group by a order by max(b);
+a	sum(b)	(select d from t2 where c=a order by max(b) limit 1)
+1	23	11
+2	45	22
+4	89	44
+drop table t1, t2;
 #
 # LP bug#993726 Wrong result from a query with ALL subquery predicate in WHERE
 #

mysql-test/r/sp-destruct.result

@@ -170,3 +170,7 @@ Error	1548	Cannot load from mysql.proc. The table is probably corrupted
 # Restore mysql.proc
 DROP TABLE mysql.proc;
 RENAME TABLE proc_backup TO mysql.proc;
+create database mysqltest1;
+create procedure mysqltest1.foo() select "foo";
+update mysql.proc set name='' where db='mysqltest1';
+drop database mysqltest1;

mysql-test/t/blackhole.test

@@ -17,5 +17,15 @@ SELECT 1 FROM t1 WHERE a = ANY (SELECT a FROM t2);
 
 DROP TABLE t1, t2;
 
+#
+# Bug#19786309 -  CRASH IN UNLOCK TABLES AFTER LOCKING AND TRUNCATING TEMPORARY TABLE.
+#
+create temporary table t1 (a int) engine=blackhole;
+lock table t1 write;
+truncate table t1;
+select * from t1;
+unlock tables;
+drop temporary table t1;
+
 --echo End of 5.5 tests 
 

mysql-test/t/group_by.test

@@ -1516,6 +1516,17 @@ let $query= SELECT MIN(a), b FROM t1 WHERE t1.b = 'a' GROUP BY b;
 --echo
 DROP TABLE t1;
 
+
+#
+# Bug#19880368 : GROUP_CONCAT CRASHES AFTER DUMP_LEAF_KEY
+#
+create table t1 (a int, b int);
+insert into t1 values (1,11), (1,12), (2,22),(2,23), (4,44),(4,45);
+create table t2 (c int, d int);
+insert into t2 values (1,11), (1,12), (2,22),(2,23), (4,44),(4,45);
+select distinct a,sum(b), (select d from t2 where c=a order by max(b) limit 1) from t1 group by a order by max(b);
+drop table t1, t2;
+
 --echo #
 --echo # LP bug#993726 Wrong result from a query with ALL subquery predicate in WHERE
 --echo #

mysql-test/t/sp-destruct.test

@@ -281,3 +281,11 @@ DROP DATABASE db1;
 --echo # Restore mysql.proc
 DROP TABLE mysql.proc;
 RENAME TABLE proc_backup TO mysql.proc;
+
+#
+# BUG#19875331 - HANDLE_FATAL_SIGNAL 11 IN STRMAKE
+#
+create database mysqltest1;
+create procedure mysqltest1.foo() select "foo";
+update mysql.proc set name='' where db='mysqltest1';
+drop database mysqltest1;

sql/item.h

@@ -4103,11 +4103,7 @@ class Item_cache: public Item_basic_constant
     collation.set(item->collation);
     unsigned_flag= item->unsigned_flag;
     if (item->type() == FIELD_ITEM)
-    {
       cached_field= ((Item_field *)item)->field;
-      if (cached_field->table)
-        used_table_map= cached_field->table->map;
-    }
     return 0;
   };
   enum Type type() const { return CACHE_ITEM; }

sql/mysqld.cc

@@ -3607,8 +3607,9 @@ static int init_common_variables()
     return 1;
   set_server_version();
 
-  sql_print_information("%s (mysqld %s) starting as process %lu ...",
-                        my_progname, server_version, (ulong) getpid());
+  if (!opt_help)
+    sql_print_information("%s (mysqld %s) starting as process %lu ...",
+                          my_progname, server_version, (ulong) getpid());
 
 #ifndef EMBEDDED_LIBRARY
   if (opt_abort && !opt_verbose)

sql/sp.cc

@@ -1495,13 +1495,8 @@ bool lock_db_routines(THD *thd, char *db)
     {
       char *sp_name= get_field(thd->mem_root,
                                table->field[MYSQL_PROC_FIELD_NAME]);
-      if (sp_name == NULL)
-      {
-        table->file->ha_index_end();
-        my_error(ER_SP_WRONG_NAME, MYF(0), "");
-        close_system_tables(thd, &open_tables_state_backup);
-        DBUG_RETURN(true);
-      }
+      if (sp_name == NULL) // skip invalid sp names (hand-edited mysql.proc?)
+        continue;
 
       longlong sp_type= table->field[MYSQL_PROC_MYSQL_TYPE]->val_int();
       MDL_request *mdl_request= new (thd->mem_root) MDL_request;