Fixed build issues

- Linking now with g++ instead of gcc with 'compile-dist' to solve problems with handlersocket/client
- Fixed bug in heap tables when doing handler read next-prev over last row


BUILD/compile-dist:
  - Linking now with g++ instead of gcc with 'compile-dist' to solve problems with handlersocket/client
cmd-line-utils/libedit/vi.c:
  Fixed compiler warning about not checking return value for write
mysql-test/r/index_intersect.result:
  Updated results (missed this file in my last push)
mysql-test/suite/handler/aria.result:
  Updated test results
mysql-test/suite/handler/handler.inc:
  Changed test to use read next/read prev on key where there are duplicates that can come in different order depending on system
  Added testing of read next-prev over last row and read prev-next around first row
mysql-test/suite/handler/heap.result:
  Updated test results
mysql-test/suite/handler/init.inc:
  More rows to test
mysql-test/suite/handler/innodb.result:
  Updated test results
mysql-test/suite/handler/interface.result:
  Updated test results
mysql-test/suite/handler/myisam.result:
  Updated test results
mysql-test/t/variables-big.test:
  Fixed test to not fail on windows
mysql-test/valgrind.supp:
  Removed not matching fun: to get rid of valgrind warning
storage/heap/hp_rfirst.c:
  Added state so that we know if we have an active position in the index.
storage/heap/hp_rkey.c:
  Added state so that we know if we have an active position in the index.
storage/heap/hp_rnext.c:
  Handle reading several next after finding the last row (this caused a crash before)
storage/heap/hp_rprev.c:
  Handle reading several prev after finding the first row (this caused a crash before)
storage/xtradb/buf/buf0buf.c:
  Fixed compiler warning about uninitialized value

BUILD/compile-dist

@@ -28,7 +28,7 @@ fi
 # Default to gcc for CC and CXX
 if test -z "$CXX" ; then
   export CXX
-  CXX=gcc
+  CXX=g++
   # Set some required compile options
   if test -z "$CXXFLAGS" ; then
     export CXXFLAGS

cmd-line-utils/libedit/vi.c

@@ -1012,8 +1012,13 @@ vi_histedit(EditLine *el, int c __attribute__((__unused__)))
 	if (fd < 0)
 		return CC_ERROR;
 	cp = el->el_line.buffer;
-	write(fd, cp, el->el_line.lastchar - cp +0u);
+	if (write(fd, cp, el->el_line.lastchar - cp +0u) == -1 ||
-	write(fd, "\n", 1);
+            write(fd, "\n", 1) == -1)
+        {
+          close(fd);
+          unlink(tempfile);
+          return CC_ERROR;
+        }
 	pid = fork();
 	switch (pid) {
 	case -1:

mysql-test/r/index_intersect.result

@@ -64,22 +64,22 @@ EXPLAIN
 SELECT * FROM City WHERE
 Name LIKE 'C%' AND Population > 1000000;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	index_merge	Population,Name	Name,Population	35,4	NULL	9	Using sort_intersect(Name,Population); Using where
+1	SIMPLE	City	index_merge	Population,Name	Name,Population	35,4	NULL	#	Using sort_intersect(Name,Population); Using where
 EXPLAIN
 SELECT * FROM City WHERE
 Name LIKE 'M%' AND Population > 1500000;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	index_merge	Population,Name	Population,Name	4,35	NULL	5	Using sort_intersect(Population,Name); Using where
+1	SIMPLE	City	index_merge	Population,Name	Population,Name	4,35	NULL	#	Using sort_intersect(Population,Name); Using where
 EXPLAIN
 SELECT * FROM City 
 WHERE Name LIKE 'M%' AND Population > 300000;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	range	Population,Name	Name	35	NULL	164	Using index condition; Using where; Using MRR
+1	SIMPLE	City	range	Population,Name	Name	35	NULL	#	Using index condition; Using where; Using MRR
 EXPLAIN
 SELECT * FROM City
 WHERE Name LIKE 'M%' AND Population > 7000000;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	range	Population,Name	Population	4	NULL	15	Using index condition; Using where; Using MRR
+1	SIMPLE	City	range	Population,Name	Population	4	NULL	#	Using index condition; Using where; Using MRR
 SELECT * FROM City USE INDEX ()
 WHERE Name LIKE 'C%' AND Population > 1000000;
 ID	Name	Country	Population
@@ -361,17 +361,17 @@ EXPLAIN
 SELECT * FROM City
 WHERE Name BETWEEN 'M' AND 'N' AND Population > 1000000 AND Country LIKE 'C%';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	index_merge	Population,Country,Name	Name,Population	35,4	NULL	9	Using sort_intersect(Name,Population); Using where
+1	SIMPLE	City	index_merge	Population,Country,Name	Name,Population	35,4	NULL	#	Using sort_intersect(Name,Population); Using where
 EXPLAIN
 SELECT * FROM City 
 WHERE Name BETWEEN 'G' AND 'J' AND Population > 1000000 AND Country LIKE 'B%';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	index_merge	Population,Country,Name	Population,Country	4,3	NULL	19	Using sort_intersect(Population,Country); Using where
+1	SIMPLE	City	index_merge	Population,Country,Name	Population,Country	4,3	NULL	#	Using sort_intersect(Population,Country); Using where
 EXPLAIN
 SELECT * FROM City 
 WHERE Name BETWEEN 'G' AND 'K' AND Population > 500000 AND Country LIKE 'C%';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	range	Population,Country,Name	Name	35	NULL	283	Using index condition; Using where; Using MRR
+1	SIMPLE	City	range	Population,Country,Name	Name	35	NULL	#	Using index condition; Using where; Using MRR
 SELECT * FROM City USE INDEX ()
 WHERE Name BETWEEN 'M' AND 'N' AND Population > 1000000 AND Country LIKE 'C%';
 ID	Name	Country	Population
@@ -462,29 +462,29 @@ EXPLAIN
 SELECT * FROM City
 WHERE ID BETWEEN 501 AND 1000 AND Population > 700000 AND Country LIKE 'C%';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	range	PRIMARY,Population,Country	Population	4	NULL	359	Using index condition; Using where; Using MRR
+1	SIMPLE	City	range	PRIMARY,Population,Country	Population	4	NULL	#	Using index condition; Using where; Using MRR
 EXPLAIN
 SELECT * FROM City
 WHERE ID BETWEEN 1 AND 500 AND Population > 1000000 AND Country LIKE 'A%';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	index_merge	PRIMARY,Population,Country	Country,Population	3,4	NULL	6	Using sort_intersect(Country,Population); Using where
+1	SIMPLE	City	index_merge	PRIMARY,Population,Country	Country,Population	3,4	NULL	#	Using sort_intersect(Country,Population); Using where
 EXPLAIN
 SELECT * FROM City 
 WHERE ID BETWEEN 2001 AND 2500 AND Population > 300000 AND Country LIKE 'H%';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	range	PRIMARY,Population,Country	Country	3	NULL	21	Using index condition; Using where; Using MRR
+1	SIMPLE	City	range	PRIMARY,Population,Country	Country	3	NULL	#	Using index condition; Using where; Using MRR
 EXPLAIN
 SELECT * FROM City 
 WHERE ID BETWEEN 3701 AND 4000 AND Population > 1000000
 AND Country BETWEEN 'S' AND 'Z';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	index_merge	PRIMARY,Population,Country	Population,PRIMARY	4,4	NULL	17	Using sort_intersect(Population,PRIMARY); Using where
+1	SIMPLE	City	index_merge	PRIMARY,Population,Country	Population,PRIMARY	4,4	NULL	#	Using sort_intersect(Population,PRIMARY); Using where
 EXPLAIN
 SELECT * FROM City 
 WHERE ID BETWEEN 3001 AND 4000 AND Population > 600000
 AND Country BETWEEN 'S' AND 'Z' ;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	range	PRIMARY,Population,Country	Population	4	NULL	429	Using index condition; Using where; Using MRR
+1	SIMPLE	City	range	PRIMARY,Population,Country	Population	4	NULL	#	Using index condition; Using where; Using MRR
 SELECT * FROM City USE INDEX ()
 WHERE ID BETWEEN 501 AND 1000 AND Population > 700000 AND Country LIKE 'C%';
 ID	Name	Country	Population
@@ -718,33 +718,33 @@ EXPLAIN
 SELECT * FROM City WHERE
 Name LIKE 'C%' AND Population > 1000000;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	index_merge	Population,Name	Name,Population	35,4	NULL	9	Using sort_intersect(Name,Population); Using where
+1	SIMPLE	City	index_merge	Population,Name	Name,Population	35,4	NULL	#	Using sort_intersect(Name,Population); Using where
 EXPLAIN
 SELECT * FROM City WHERE
 Name LIKE 'M%' AND Population > 1500000;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	index_merge	Population,Name	Population,Name	4,35	NULL	5	Using sort_intersect(Population,Name); Using where
+1	SIMPLE	City	index_merge	Population,Name	Population,Name	4,35	NULL	#	Using sort_intersect(Population,Name); Using where
 EXPLAIN
 SELECT * FROM City 
 WHERE  Name BETWEEN 'G' AND 'J' AND Population > 1000000 AND Country LIKE 'B%';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	index_merge	Population,Country,Name	Population,Country	4,3	NULL	19	Using sort_intersect(Population,Country); Using where
+1	SIMPLE	City	index_merge	Population,Country,Name	Population,Country	4,3	NULL	#	Using sort_intersect(Population,Country); Using where
 EXPLAIN
 SELECT * FROM City 
 WHERE  Name BETWEEN 'G' AND 'J' AND Population > 500000 AND Country LIKE 'C%';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	range	Population,Country,Name	Name	35	NULL	225	Using index condition; Using where; Using MRR
+1	SIMPLE	City	range	Population,Country,Name	Name	35	NULL	#	Using index condition; Using where; Using MRR
 EXPLAIN
 SELECT * FROM City
 WHERE ID BETWEEN 1 AND 500 AND Population > 1000000 AND Country LIKE 'A%';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	index_merge	PRIMARY,Population,Country	Country,Population	3,4	NULL	6	Using sort_intersect(Country,Population); Using where
+1	SIMPLE	City	index_merge	PRIMARY,Population,Country	Country,Population	3,4	NULL	#	Using sort_intersect(Country,Population); Using where
 EXPLAIN
 SELECT * FROM City 
 WHERE ID BETWEEN 3001 AND 4000 AND Population > 600000
 AND Country BETWEEN 'S' AND 'Z';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	range	PRIMARY,Population,Country	Population	4	NULL	429	Using index condition; Using where; Using MRR
+1	SIMPLE	City	range	PRIMARY,Population,Country	Population	4	NULL	#	Using index condition; Using where; Using MRR
 SELECT * FROM City WHERE
 Name LIKE 'C%' AND Population > 1000000;
 ID	Name	Country	Population
@@ -885,17 +885,17 @@ EXPLAIN
 SELECT * FROM City 
 WHERE Country LIKE 'M%' AND Population > 1000000;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	index_merge	Population,CountryID,CountryName	Population,CountryID	4,3	NULL	15	Using sort_intersect(Population,CountryID); Using where
+1	SIMPLE	City	index_merge	Population,CountryID,CountryName	Population,CountryID	4,3	NULL	#	Using sort_intersect(Population,CountryID); Using where
 EXPLAIN
 SELECT * FROM City 
 WHERE Country='CHN' AND Population > 1500000;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	index_merge	Population,CountryID,CountryName	Population,CountryID	4,3	NULL	11	Using sort_intersect(Population,CountryID); Using where
+1	SIMPLE	City	index_merge	Population,CountryID,CountryName	Population,CountryID	4,3	NULL	#	Using sort_intersect(Population,CountryID); Using where
 EXPLAIN
 SELECT * FROM City 
 WHERE Country='CHN' AND Population > 1500000 AND Name LIKE 'C%';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	City	index_merge	Population,Name,CountryID,CountryName	CountryName,Population	38,4	NULL	1	Using sort_intersect(CountryName,Population); Using where
+1	SIMPLE	City	index_merge	Population,Name,CountryID,CountryName	CountryName,Population	38,4	NULL	#	Using sort_intersect(CountryName,Population); Using where
 SELECT * FROM City USE INDEX ()
 WHERE Country LIKE 'M%' AND Population > 1000000;
 ID	Name	Country	Population
@@ -1028,7 +1028,7 @@ EXPLAIN
 SELECT * FROM t1
 WHERE (f1 < 535  OR  f1 > 985) AND ( f4='r' OR f4 LIKE 'a%' ) ;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	range	PRIMARY,f4	f4	35	NULL	5	Using index condition; Using where; Using MRR
+1	SIMPLE	t1	range	PRIMARY,f4	f4	35	NULL	#	Using index condition; Using where; Using MRR
 SELECT * FROM t1
 WHERE (f1 < 535  OR  f1 > 985) AND ( f4='r' OR f4 LIKE 'a%' ) ;
 f1	f4	f5

mysql-test/suite/handler/aria.result

@@ -4,7 +4,7 @@ create table t1 (a int, b char(10), key a  (a), key b  (a,b));
 insert into t1 values
 (17,"ddd"),(18,"eee"),(19,"fff"),(19,"yyy"),
 (14,"aaa"),(16,"ccc"),(16,"xxx"),
-(20,"ggg"),(21,"hhh"),(22,"iii");
+(20,"ggg"),(21,"hhh"),(22,"iii"),(23,"xxx"),(24,"xxx"),(25,"xxx");
 handler t1 open as t2;
 handler t2 read b first;
 a	b
@@ -20,13 +20,13 @@ a	b
 16	ccc
 handler t2 read b last;
 a	b
-22	iii
+25	xxx
 handler t2 read b prev;
 a	b
-21	hhh
+24	xxx
 handler t2 read b prev;
 a	b
-20	ggg
+23	xxx
 handler t2 read b first;
 a	b
 14	aaa
@@ -34,13 +34,13 @@ handler t2 read b prev;
 a	b
 handler t2 read b last;
 a	b
-22	iii
+25	xxx
 handler t2 read b prev;
 a	b
-21	hhh
+24	xxx
 handler t2 read b next;
 a	b
-22	iii
+25	xxx
 handler t2 read b next;
 a	b
 handler t2 read a=(15);
@@ -105,10 +105,10 @@ handler t2 read a>(54);
 a	b
 handler t2 read a<=(54);
 a	b
-22	iii
+25	xxx
 handler t2 read a<(54);
 a	b
-22	iii
+25	xxx
 handler t2 read a=(1);
 a	b
 handler t2 read a>=(1);
@@ -158,9 +158,9 @@ a	b
 18	eee
 handler t2 read a last  limit 3;
 a	b
-22	iii
+25	xxx
-21	hhh
+24	xxx
-20	ggg
+23	xxx
 handler t2 read b=(16) limit 1,3;
 a	b
 16	xxx
@@ -191,10 +191,10 @@ handler t1 close;
 handler t1 open;
 handler t1 read a prev;
 a	b
-22	iii
+25	xxx
 handler t1 read a prev;
 a	b
-21	hhh
+24	xxx
 handler t1 close;
 handler t1 open as t2;
 handler t2 read first;
@@ -204,53 +204,97 @@ alter table t1 engine = Aria;
 handler t2 read first;
 ERROR 42S02: Unknown table 't2' in HANDLER
 handler t1 open;
-handler t1 read a=(16) limit 1,3;
+handler t1 read a=(20) limit 1,3;
 a	b
-16	xxx
 flush tables;
-handler t1 read a=(16) limit 1,3;
+handler t1 read a=(20) limit 1,3;
 a	b
-16	xxx
+handler t1 close;
+handler t1 open;
+handler t1 read a=(25);
+a	b
+25	xxx
+handler t1 read a next;
+a	b
+handler t1 read a next;
+a	b
+handler t1 read a next;
+a	b
+handler t1 read a prev;
+a	b
+25	xxx
+handler t1 read a=(1000);
+a	b
+handler t1 read a next;
+a	b
+handler t1 read a prev;
+a	b
+25	xxx
+handler t1 read a=(1000);
+a	b
+handler t1 read a prev;
+a	b
+25	xxx
+handler t1 read a=(14);
+a	b
+14	aaa
+handler t1 read a prev;
+a	b
+handler t1 read a prev;
+a	b
+handler t1 read a next;
+a	b
+14	aaa
+handler t1 read a=(1);
+a	b
+handler t1 read a prev;
+a	b
+handler t1 read a next;
+a	b
+14	aaa
+handler t1 read a=(1);
+a	b
+handler t1 read a next;
+a	b
+14	aaa
 handler t1 close;
 handler t1 open;
 prepare stmt from 'handler t1 read a=(?) limit ?,?';
-set @a=16,@b=1,@c=100;
+set @a=20,@b=1,@c=100;
 execute stmt using @a,@b,@c;
 a	b
-16	xxx
+set @a=20,@b=2,@c=1;
-set @a=16,@b=2,@c=1;
 execute stmt using @a,@b,@c;
 a	b
-set @a=16,@b=0,@c=2;
+set @a=20,@b=0,@c=2;
 execute stmt using @a,@b,@c;
 a	b
-16	ccc
+20	ggg
-16	xxx
 deallocate prepare stmt;
 prepare stmt from 'handler t1 read a next limit ?';
-handler t1 read a>=(11);
+handler t1 read a>=(21);
 a	b
-14	aaa
+21	hhh
 set @a=3;
 execute stmt using @a;
 a	b
-16	ccc
-16	xxx
-17	ddd
-execute stmt using @a;
-a	b
-18	eee
-19	fff
-19	yyy
-execute stmt using @a;
-a	b
-20	ggg
-21	hhh
 22	iii
+23	xxx
+24	xxx
+execute stmt using @a;
+a	b
+25	xxx
+execute stmt using @a;
+a	b
 deallocate prepare stmt;
 prepare stmt from 'handler t1 read b prev limit ?';
 execute stmt using @a;
 a	b
+25	xxx
+24	xxx
+23	xxx
+execute stmt using @a;
+a	b
 22	iii
 21	hhh
 20	ggg
@@ -264,9 +308,6 @@ a	b
 17	ddd
 16	xxx
 16	ccc
-execute stmt using @a;
-a	b
-14	aaa
 deallocate prepare stmt;
 prepare stmt from 'handler t1 read b=(?,?)';
 set @a=14, @b='aaa';
@@ -289,27 +330,27 @@ a	b
 16	xxx
 deallocate prepare stmt;
 prepare stmt from 'handler t1 read a>=(?) where a < ? limit 5';
-set @a=15, @b=20;
+set @a=17, @b=24;
 execute stmt using @a,@b;
 a	b
-16	ccc
-16	xxx
 17	ddd
 18	eee
 19	fff
+19	yyy
+20	ggg
 execute stmt using @a,@b;
 a	b
-16	ccc
-16	xxx
 17	ddd
 18	eee
 19	fff
+19	yyy
+20	ggg
 deallocate prepare stmt;
 prepare stmt from 'handler t1 read a=(?)';
-set @a=16;
+set @a=17;
 execute stmt using @a;
 a	b
-16	ccc
+17	ddd
 alter table t1 add c int;
 execute stmt using @a;
 ERROR 42S02: Unknown table 't1' in HANDLER
@@ -319,7 +360,7 @@ ERROR 42S02: Unknown table 't1' in HANDLER
 handler t1 open;
 prepare stmt from 'handler t1 read a=(?)';
 flush tables;
-set @a=16;
+set @a=17;
 execute stmt using @a;
 ERROR HY000: Prepared statement needs to be re-prepared
 deallocate prepare stmt;

mysql-test/suite/handler/handler.inc

@@ -120,9 +120,37 @@ eval alter table t1 engine = $engine_type;
 handler t2 read first;
 
 handler t1 open;
-handler t1 read a=(16) limit 1,3;
+handler t1 read a=(20) limit 1,3;
 flush tables;
-handler t1 read a=(16) limit 1,3;
+handler t1 read a=(20) limit 1,3;
+handler t1 close;
+
+#
+# Search after end and before start of index
+#
+
+handler t1 open;
+handler t1 read a=(25);
+handler t1 read a next;
+handler t1 read a next;
+handler t1 read a next;
+handler t1 read a prev;
+handler t1 read a=(1000);
+handler t1 read a next;
+handler t1 read a prev;
+handler t1 read a=(1000);
+handler t1 read a prev;
+
+handler t1 read a=(14);
+handler t1 read a prev;
+handler t1 read a prev;
+handler t1 read a next;
+handler t1 read a=(1);
+handler t1 read a prev;
+handler t1 read a next;
+handler t1 read a=(1);
+handler t1 read a next;
+
 handler t1 close;
 
 #
@@ -131,16 +159,16 @@ handler t1 close;
 
 handler t1 open;
 prepare stmt from 'handler t1 read a=(?) limit ?,?';
-set @a=16,@b=1,@c=100;
+set @a=20,@b=1,@c=100;
 execute stmt using @a,@b,@c;
-set @a=16,@b=2,@c=1;
+set @a=20,@b=2,@c=1;
 execute stmt using @a,@b,@c;
-set @a=16,@b=0,@c=2;
+set @a=20,@b=0,@c=2;
 execute stmt using @a,@b,@c;
 deallocate prepare stmt;
 
 prepare stmt from 'handler t1 read a next limit ?';
-handler t1 read a>=(11);
+handler t1 read a>=(21);
 set @a=3;
 execute stmt using @a;
 execute stmt using @a;
@@ -168,13 +196,13 @@ execute stmt using @a;
 deallocate prepare stmt;
 
 prepare stmt from 'handler t1 read a>=(?) where a < ? limit 5';
-set @a=15, @b=20;
+set @a=17, @b=24;
 execute stmt using @a,@b;
 execute stmt using @a,@b;
 deallocate prepare stmt;
 
 prepare stmt from 'handler t1 read a=(?)';
-set @a=16;
+set @a=17;
 execute stmt using @a;
 alter table t1 add c int;
 --error 1109
@@ -186,7 +214,7 @@ handler t1 close;
 handler t1 open;
 prepare stmt from 'handler t1 read a=(?)';
 flush tables;
-set @a=16;
+set @a=17;
 --error ER_NEED_REPREPARE
 execute stmt using @a;
 deallocate prepare stmt;

mysql-test/suite/handler/heap.result

@@ -4,7 +4,7 @@ create table t1 (a int, b char(10), key a using btree (a), key b using btree (a,
 insert into t1 values
 (17,"ddd"),(18,"eee"),(19,"fff"),(19,"yyy"),
 (14,"aaa"),(16,"ccc"),(16,"xxx"),
-(20,"ggg"),(21,"hhh"),(22,"iii");
+(20,"ggg"),(21,"hhh"),(22,"iii"),(23,"xxx"),(24,"xxx"),(25,"xxx");
 handler t1 open as t2;
 handler t2 read b first;
 a	b
@@ -20,13 +20,13 @@ a	b
 16	ccc
 handler t2 read b last;
 a	b
-22	iii
+25	xxx
 handler t2 read b prev;
 a	b
-21	hhh
+24	xxx
 handler t2 read b prev;
 a	b
-20	ggg
+23	xxx
 handler t2 read b first;
 a	b
 14	aaa
@@ -34,13 +34,13 @@ handler t2 read b prev;
 a	b
 handler t2 read b last;
 a	b
-22	iii
+25	xxx
 handler t2 read b prev;
 a	b
-21	hhh
+24	xxx
 handler t2 read b next;
 a	b
-22	iii
+25	xxx
 handler t2 read b next;
 a	b
 handler t2 read a=(15);
@@ -105,10 +105,10 @@ handler t2 read a>(54);
 a	b
 handler t2 read a<=(54);
 a	b
-22	iii
+25	xxx
 handler t2 read a<(54);
 a	b
-22	iii
+25	xxx
 handler t2 read a=(1);
 a	b
 handler t2 read a>=(1);
@@ -158,9 +158,9 @@ a	b
 18	eee
 handler t2 read a last  limit 3;
 a	b
-22	iii
+25	xxx
-21	hhh
+24	xxx
-20	ggg
+23	xxx
 handler t2 read b=(16) limit 1,3;
 a	b
 16	xxx
@@ -191,10 +191,10 @@ handler t1 close;
 handler t1 open;
 handler t1 read a prev;
 a	b
-22	iii
+25	xxx
 handler t1 read a prev;
 a	b
-21	hhh
+24	xxx
 handler t1 close;
 handler t1 open as t2;
 handler t2 read first;
@@ -204,53 +204,97 @@ alter table t1 engine = MEMORY;
 handler t2 read first;
 ERROR 42S02: Unknown table 't2' in HANDLER
 handler t1 open;
-handler t1 read a=(16) limit 1,3;
+handler t1 read a=(20) limit 1,3;
 a	b
-16	ccc
 flush tables;
-handler t1 read a=(16) limit 1,3;
+handler t1 read a=(20) limit 1,3;
 a	b
-16	ccc
+handler t1 close;
+handler t1 open;
+handler t1 read a=(25);
+a	b
+25	xxx
+handler t1 read a next;
+a	b
+handler t1 read a next;
+a	b
+handler t1 read a next;
+a	b
+handler t1 read a prev;
+a	b
+25	xxx
+handler t1 read a=(1000);
+a	b
+handler t1 read a next;
+a	b
+handler t1 read a prev;
+a	b
+25	xxx
+handler t1 read a=(1000);
+a	b
+handler t1 read a prev;
+a	b
+25	xxx
+handler t1 read a=(14);
+a	b
+14	aaa
+handler t1 read a prev;
+a	b
+handler t1 read a prev;
+a	b
+handler t1 read a next;
+a	b
+14	aaa
+handler t1 read a=(1);
+a	b
+handler t1 read a prev;
+a	b
+handler t1 read a next;
+a	b
+14	aaa
+handler t1 read a=(1);
+a	b
+handler t1 read a next;
+a	b
+14	aaa
 handler t1 close;
 handler t1 open;
 prepare stmt from 'handler t1 read a=(?) limit ?,?';
-set @a=16,@b=1,@c=100;
+set @a=20,@b=1,@c=100;
 execute stmt using @a,@b,@c;
 a	b
-16	ccc
+set @a=20,@b=2,@c=1;
-set @a=16,@b=2,@c=1;
 execute stmt using @a,@b,@c;
 a	b
-set @a=16,@b=0,@c=2;
+set @a=20,@b=0,@c=2;
 execute stmt using @a,@b,@c;
 a	b
-16	xxx
+20	ggg
-16	ccc
 deallocate prepare stmt;
 prepare stmt from 'handler t1 read a next limit ?';
-handler t1 read a>=(11);
+handler t1 read a>=(21);
 a	b
-14	aaa
+21	hhh
 set @a=3;
 execute stmt using @a;
 a	b
-16	xxx
-16	ccc
-17	ddd
-execute stmt using @a;
-a	b
-18	eee
-19	fff
-19	yyy
-execute stmt using @a;
-a	b
-20	ggg
-21	hhh
 22	iii
+23	xxx
+24	xxx
+execute stmt using @a;
+a	b
+25	xxx
+execute stmt using @a;
+a	b
 deallocate prepare stmt;
 prepare stmt from 'handler t1 read b prev limit ?';
 execute stmt using @a;
 a	b
+25	xxx
+24	xxx
+23	xxx
+execute stmt using @a;
+a	b
 22	iii
 21	hhh
 20	ggg
@@ -264,9 +308,6 @@ a	b
 17	ddd
 16	xxx
 16	ccc
-execute stmt using @a;
-a	b
-14	aaa
 deallocate prepare stmt;
 prepare stmt from 'handler t1 read b=(?,?)';
 set @a=14, @b='aaa';
@@ -289,27 +330,27 @@ a	b
 16	xxx
 deallocate prepare stmt;
 prepare stmt from 'handler t1 read a>=(?) where a < ? limit 5';
-set @a=15, @b=20;
+set @a=17, @b=24;
 execute stmt using @a,@b;
 a	b
-16	xxx
-16	ccc
 17	ddd
 18	eee
 19	fff
+19	yyy
+20	ggg
 execute stmt using @a,@b;
 a	b
-16	xxx
-16	ccc
 17	ddd
 18	eee
 19	fff
+19	yyy
+20	ggg
 deallocate prepare stmt;
 prepare stmt from 'handler t1 read a=(?)';
-set @a=16;
+set @a=17;
 execute stmt using @a;
 a	b
-16	xxx
+17	ddd
 alter table t1 add c int;
 execute stmt using @a;
 ERROR 42S02: Unknown table 't1' in HANDLER
@@ -319,7 +360,7 @@ ERROR 42S02: Unknown table 't1' in HANDLER
 handler t1 open;
 prepare stmt from 'handler t1 read a=(?)';
 flush tables;
-set @a=16;
+set @a=17;
 execute stmt using @a;
 ERROR HY000: Prepared statement needs to be re-prepared
 deallocate prepare stmt;

mysql-test/suite/handler/init.inc

@@ -30,4 +30,4 @@ eval create table t1 (a int, b char(10), key a $key_type (a), key b $key_type (a
 insert into t1 values
 (17,"ddd"),(18,"eee"),(19,"fff"),(19,"yyy"),
 (14,"aaa"),(16,"ccc"),(16,"xxx"),
-(20,"ggg"),(21,"hhh"),(22,"iii");
+(20,"ggg"),(21,"hhh"),(22,"iii"),(23,"xxx"),(24,"xxx"),(25,"xxx");

mysql-test/suite/handler/innodb.result

@@ -4,7 +4,7 @@ create table t1 (a int, b char(10), key a  (a), key b  (a,b));
 insert into t1 values
 (17,"ddd"),(18,"eee"),(19,"fff"),(19,"yyy"),
 (14,"aaa"),(16,"ccc"),(16,"xxx"),
-(20,"ggg"),(21,"hhh"),(22,"iii");
+(20,"ggg"),(21,"hhh"),(22,"iii"),(23,"xxx"),(24,"xxx"),(25,"xxx");
 handler t1 open as t2;
 handler t2 read b first;
 a	b
@@ -20,13 +20,13 @@ a	b
 16	ccc
 handler t2 read b last;
 a	b
-22	iii
+25	xxx
 handler t2 read b prev;
 a	b
-21	hhh
+24	xxx
 handler t2 read b prev;
 a	b
-20	ggg
+23	xxx
 handler t2 read b first;
 a	b
 14	aaa
@@ -34,13 +34,13 @@ handler t2 read b prev;
 a	b
 handler t2 read b last;
 a	b
-22	iii
+25	xxx
 handler t2 read b prev;
 a	b
-21	hhh
+24	xxx
 handler t2 read b next;
 a	b
-22	iii
+25	xxx
 handler t2 read b next;
 a	b
 handler t2 read a=(15);
@@ -105,10 +105,10 @@ handler t2 read a>(54);
 a	b
 handler t2 read a<=(54);
 a	b
-22	iii
+25	xxx
 handler t2 read a<(54);
 a	b
-22	iii
+25	xxx
 handler t2 read a=(1);
 a	b
 handler t2 read a>=(1);
@@ -158,9 +158,9 @@ a	b
 18	eee
 handler t2 read a last  limit 3;
 a	b
-22	iii
+25	xxx
-21	hhh
+24	xxx
-20	ggg
+23	xxx
 handler t2 read b=(16) limit 1,3;
 a	b
 16	xxx
@@ -191,10 +191,10 @@ handler t1 close;
 handler t1 open;
 handler t1 read a prev;
 a	b
-22	iii
+25	xxx
 handler t1 read a prev;
 a	b
-21	hhh
+24	xxx
 handler t1 close;
 handler t1 open as t2;
 handler t2 read first;
@@ -204,53 +204,97 @@ alter table t1 engine = InnoDB;
 handler t2 read first;
 ERROR 42S02: Unknown table 't2' in HANDLER
 handler t1 open;
-handler t1 read a=(16) limit 1,3;
+handler t1 read a=(20) limit 1,3;
 a	b
-16	xxx
 flush tables;
-handler t1 read a=(16) limit 1,3;
+handler t1 read a=(20) limit 1,3;
 a	b
-16	xxx
+handler t1 close;
+handler t1 open;
+handler t1 read a=(25);
+a	b
+25	xxx
+handler t1 read a next;
+a	b
+handler t1 read a next;
+a	b
+handler t1 read a next;
+a	b
+handler t1 read a prev;
+a	b
+25	xxx
+handler t1 read a=(1000);
+a	b
+handler t1 read a next;
+a	b
+handler t1 read a prev;
+a	b
+25	xxx
+handler t1 read a=(1000);
+a	b
+handler t1 read a prev;
+a	b
+25	xxx
+handler t1 read a=(14);
+a	b
+14	aaa
+handler t1 read a prev;
+a	b
+handler t1 read a prev;
+a	b
+handler t1 read a next;
+a	b
+14	aaa
+handler t1 read a=(1);
+a	b
+handler t1 read a prev;
+a	b
+handler t1 read a next;
+a	b
+14	aaa
+handler t1 read a=(1);
+a	b
+handler t1 read a next;
+a	b
+16	ccc
 handler t1 close;
 handler t1 open;
 prepare stmt from 'handler t1 read a=(?) limit ?,?';
-set @a=16,@b=1,@c=100;
+set @a=20,@b=1,@c=100;
 execute stmt using @a,@b,@c;
 a	b
-16	xxx
+set @a=20,@b=2,@c=1;
-set @a=16,@b=2,@c=1;
 execute stmt using @a,@b,@c;
 a	b
-set @a=16,@b=0,@c=2;
+set @a=20,@b=0,@c=2;
 execute stmt using @a,@b,@c;
 a	b
-16	ccc
+20	ggg
-16	xxx
 deallocate prepare stmt;
 prepare stmt from 'handler t1 read a next limit ?';
-handler t1 read a>=(11);
+handler t1 read a>=(21);
 a	b
-14	aaa
+21	hhh
 set @a=3;
 execute stmt using @a;
 a	b
-16	ccc
-16	xxx
-17	ddd
-execute stmt using @a;
-a	b
-18	eee
-19	fff
-19	yyy
-execute stmt using @a;
-a	b
-20	ggg
-21	hhh
 22	iii
+23	xxx
+24	xxx
+execute stmt using @a;
+a	b
+25	xxx
+execute stmt using @a;
+a	b
 deallocate prepare stmt;
 prepare stmt from 'handler t1 read b prev limit ?';
 execute stmt using @a;
 a	b
+25	xxx
+24	xxx
+23	xxx
+execute stmt using @a;
+a	b
 22	iii
 21	hhh
 20	ggg
@@ -264,9 +308,6 @@ a	b
 17	ddd
 16	xxx
 16	ccc
-execute stmt using @a;
-a	b
-14	aaa
 deallocate prepare stmt;
 prepare stmt from 'handler t1 read b=(?,?)';
 set @a=14, @b='aaa';
@@ -289,27 +330,27 @@ a	b
 16	xxx
 deallocate prepare stmt;
 prepare stmt from 'handler t1 read a>=(?) where a < ? limit 5';
-set @a=15, @b=20;
+set @a=17, @b=24;
 execute stmt using @a,@b;
 a	b
-16	ccc
-16	xxx
 17	ddd
 18	eee
 19	fff
+19	yyy
+20	ggg
 execute stmt using @a,@b;
 a	b
-16	ccc
-16	xxx
 17	ddd
 18	eee
 19	fff
+19	yyy
+20	ggg
 deallocate prepare stmt;
 prepare stmt from 'handler t1 read a=(?)';
-set @a=16;
+set @a=17;
 execute stmt using @a;
 a	b
-16	ccc
+17	ddd
 alter table t1 add c int;
 execute stmt using @a;
 ERROR 42S02: Unknown table 't1' in HANDLER
@@ -319,7 +360,7 @@ ERROR 42S02: Unknown table 't1' in HANDLER
 handler t1 open;
 prepare stmt from 'handler t1 read a=(?)';
 flush tables;
-set @a=16;
+set @a=17;
 execute stmt using @a;
 ERROR HY000: Prepared statement needs to be re-prepared
 deallocate prepare stmt;

mysql-test/suite/handler/interface.result

@@ -6,7 +6,7 @@ create table t1 (a int, b char(10), key a  (a), key b  (a,b));
 insert into t1 values
 (17,"ddd"),(18,"eee"),(19,"fff"),(19,"yyy"),
 (14,"aaa"),(16,"ccc"),(16,"xxx"),
-(20,"ggg"),(21,"hhh"),(22,"iii");
+(20,"ggg"),(21,"hhh"),(22,"iii"),(23,"xxx"),(24,"xxx"),(25,"xxx");
 handler t1 open;
 handler t1 read a=(SELECT 1);
 ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'SELECT 1)' at line 1

mysql-test/suite/handler/myisam.result

@@ -4,7 +4,7 @@ create table t1 (a int, b char(10), key a  (a), key b  (a,b));
 insert into t1 values
 (17,"ddd"),(18,"eee"),(19,"fff"),(19,"yyy"),
 (14,"aaa"),(16,"ccc"),(16,"xxx"),
-(20,"ggg"),(21,"hhh"),(22,"iii");
+(20,"ggg"),(21,"hhh"),(22,"iii"),(23,"xxx"),(24,"xxx"),(25,"xxx");
 handler t1 open as t2;
 handler t2 read b first;
 a	b
@@ -20,13 +20,13 @@ a	b
 16	ccc
 handler t2 read b last;
 a	b
-22	iii
+25	xxx
 handler t2 read b prev;
 a	b
-21	hhh
+24	xxx
 handler t2 read b prev;
 a	b
-20	ggg
+23	xxx
 handler t2 read b first;
 a	b
 14	aaa
@@ -34,13 +34,13 @@ handler t2 read b prev;
 a	b
 handler t2 read b last;
 a	b
-22	iii
+25	xxx
 handler t2 read b prev;
 a	b
-21	hhh
+24	xxx
 handler t2 read b next;
 a	b
-22	iii
+25	xxx
 handler t2 read b next;
 a	b
 handler t2 read a=(15);
@@ -105,10 +105,10 @@ handler t2 read a>(54);
 a	b
 handler t2 read a<=(54);
 a	b
-22	iii
+25	xxx
 handler t2 read a<(54);
 a	b
-22	iii
+25	xxx
 handler t2 read a=(1);
 a	b
 handler t2 read a>=(1);
@@ -158,9 +158,9 @@ a	b
 18	eee
 handler t2 read a last  limit 3;
 a	b
-22	iii
+25	xxx
-21	hhh
+24	xxx
-20	ggg
+23	xxx
 handler t2 read b=(16) limit 1,3;
 a	b
 16	xxx
@@ -191,10 +191,10 @@ handler t1 close;
 handler t1 open;
 handler t1 read a prev;
 a	b
-22	iii
+25	xxx
 handler t1 read a prev;
 a	b
-21	hhh
+24	xxx
 handler t1 close;
 handler t1 open as t2;
 handler t2 read first;
@@ -204,53 +204,97 @@ alter table t1 engine = MyISAM;
 handler t2 read first;
 ERROR 42S02: Unknown table 't2' in HANDLER
 handler t1 open;
-handler t1 read a=(16) limit 1,3;
+handler t1 read a=(20) limit 1,3;
 a	b
-16	xxx
 flush tables;
-handler t1 read a=(16) limit 1,3;
+handler t1 read a=(20) limit 1,3;
 a	b
-16	xxx
+handler t1 close;
+handler t1 open;
+handler t1 read a=(25);
+a	b
+25	xxx
+handler t1 read a next;
+a	b
+handler t1 read a next;
+a	b
+handler t1 read a next;
+a	b
+handler t1 read a prev;
+a	b
+25	xxx
+handler t1 read a=(1000);
+a	b
+handler t1 read a next;
+a	b
+handler t1 read a prev;
+a	b
+25	xxx
+handler t1 read a=(1000);
+a	b
+handler t1 read a prev;
+a	b
+25	xxx
+handler t1 read a=(14);
+a	b
+14	aaa
+handler t1 read a prev;
+a	b
+handler t1 read a prev;
+a	b
+handler t1 read a next;
+a	b
+14	aaa
+handler t1 read a=(1);
+a	b
+handler t1 read a prev;
+a	b
+handler t1 read a next;
+a	b
+14	aaa
+handler t1 read a=(1);
+a	b
+handler t1 read a next;
+a	b
+14	aaa
 handler t1 close;
 handler t1 open;
 prepare stmt from 'handler t1 read a=(?) limit ?,?';
-set @a=16,@b=1,@c=100;
+set @a=20,@b=1,@c=100;
 execute stmt using @a,@b,@c;
 a	b
-16	xxx
+set @a=20,@b=2,@c=1;
-set @a=16,@b=2,@c=1;
 execute stmt using @a,@b,@c;
 a	b
-set @a=16,@b=0,@c=2;
+set @a=20,@b=0,@c=2;
 execute stmt using @a,@b,@c;
 a	b
-16	ccc
+20	ggg
-16	xxx
 deallocate prepare stmt;
 prepare stmt from 'handler t1 read a next limit ?';
-handler t1 read a>=(11);
+handler t1 read a>=(21);
 a	b
-14	aaa
+21	hhh
 set @a=3;
 execute stmt using @a;
 a	b
-16	ccc
-16	xxx
-17	ddd
-execute stmt using @a;
-a	b
-18	eee
-19	fff
-19	yyy
-execute stmt using @a;
-a	b
-20	ggg
-21	hhh
 22	iii
+23	xxx
+24	xxx
+execute stmt using @a;
+a	b
+25	xxx
+execute stmt using @a;
+a	b
 deallocate prepare stmt;
 prepare stmt from 'handler t1 read b prev limit ?';
 execute stmt using @a;
 a	b
+25	xxx
+24	xxx
+23	xxx
+execute stmt using @a;
+a	b
 22	iii
 21	hhh
 20	ggg
@@ -264,9 +308,6 @@ a	b
 17	ddd
 16	xxx
 16	ccc
-execute stmt using @a;
-a	b
-14	aaa
 deallocate prepare stmt;
 prepare stmt from 'handler t1 read b=(?,?)';
 set @a=14, @b='aaa';
@@ -289,27 +330,27 @@ a	b
 16	xxx
 deallocate prepare stmt;
 prepare stmt from 'handler t1 read a>=(?) where a < ? limit 5';
-set @a=15, @b=20;
+set @a=17, @b=24;
 execute stmt using @a,@b;
 a	b
-16	ccc
-16	xxx
 17	ddd
 18	eee
 19	fff
+19	yyy
+20	ggg
 execute stmt using @a,@b;
 a	b
-16	ccc
-16	xxx
 17	ddd
 18	eee
 19	fff
+19	yyy
+20	ggg
 deallocate prepare stmt;
 prepare stmt from 'handler t1 read a=(?)';
-set @a=16;
+set @a=17;
 execute stmt using @a;
 a	b
-16	ccc
+17	ddd
 alter table t1 add c int;
 execute stmt using @a;
 ERROR 42S02: Unknown table 't1' in HANDLER
@@ -319,7 +360,7 @@ ERROR 42S02: Unknown table 't1' in HANDLER
 handler t1 open;
 prepare stmt from 'handler t1 read a=(?)';
 flush tables;
-set @a=16;
+set @a=17;
 execute stmt using @a;
 ERROR HY000: Prepared statement needs to be re-prepared
 deallocate prepare stmt;

mysql-test/t/variables-big.test

@@ -40,18 +40,22 @@ SET SESSION transaction_prealloc_size=1024*1024*1024*1;
 --replace_column 1 <Id> 6 <Time>
 # Embedded server is hardcoded to show "Writing to net" as STATE.
 --replace_result "Writing to net" "NULL"
+--replace_regex /localhost[:0-9]*/localhost/
 SHOW PROCESSLIST;
 SET SESSION transaction_prealloc_size=1024*1024*1024*2;
 --replace_column 1 <Id> 6 <Time>
 --replace_result "Writing to net" "NULL"
+--replace_regex /localhost[:0-9]*/localhost/
 SHOW PROCESSLIST;
 SET SESSION transaction_prealloc_size=1024*1024*1024*3;
 --replace_column 1 <Id> 6 <Time>
 --replace_result "Writing to net" "NULL"
+--replace_regex /localhost[:0-9]*/localhost/
 SHOW PROCESSLIST;
 SET SESSION transaction_prealloc_size=1024*1024*1024*4;
 --replace_column 1 <Id> 6 <Time>
 --replace_result "Writing to net" "NULL"
+--replace_regex /localhost[:0-9]*/localhost/
 SHOW PROCESSLIST;
 SET SESSION transaction_prealloc_size=1024*1024*1024*5;
 --replace_column 1 <Id> 6 <Time>

mysql-test/valgrind.supp

@@ -558,7 +558,6 @@
    obj:/lib*/ld-*.so)
    obj:/lib*/libdl-*.so)
    fun:dlsym
-   fun:plugin_dl_add
 }
 
 #

storage/heap/hp_rfirst.c

@@ -52,6 +52,7 @@ int heap_rfirst(HP_INFO *info, uchar *record, int inx)
     }
     else
     {
+      info->update= HA_STATE_NO_KEY;
       my_errno = HA_ERR_END_OF_FILE;
       DBUG_RETURN(my_errno);
     }

storage/heap/hp_rkey.c

@@ -51,7 +51,7 @@ int heap_rkey(HP_INFO *info, uchar *record, int inx, const uchar *key,
     if (!(pos= tree_search_key(&keyinfo->rb_tree, info->lastkey, info->parents,
 			       &info->last_pos, find_flag, &custom_arg)))
     {
-      info->update= 0;
+      info->update= HA_STATE_NO_KEY;
       DBUG_RETURN(my_errno= HA_ERR_KEY_NOT_FOUND);
     }
     memcpy(&pos, pos + (*keyinfo->get_key_length)(keyinfo, pos), sizeof(uchar*));
@@ -61,7 +61,7 @@ int heap_rkey(HP_INFO *info, uchar *record, int inx, const uchar *key,
   {
     if (!(pos= hp_search(info, share->keydef + inx, key, 0)))
     {
-      info->update= 0;
+      info->update= HA_STATE_NO_KEY;
       DBUG_RETURN(my_errno);
     }
     if (!(keyinfo->flag & HA_NOSAME))

storage/heap/hp_rnext.c

@@ -32,7 +32,20 @@ int heap_rnext(HP_INFO *info, uchar *record)
   {
     heap_rb_param custom_arg;
 
-    if (info->last_pos)
+    /* If no active record and last was not deleted */
+    if (!(info->update & (HA_STATE_AKTIV | HA_STATE_NO_KEY |
+                          HA_STATE_DELETED)))
+    {
+      if (info->update & HA_STATE_NEXT_FOUND)
+        pos= 0;                            /* Can't search after last row */
+      else
+      {
+        /* Last was 'prev' before first record; search after first record */
+        pos= tree_search_edge(&keyinfo->rb_tree, info->parents,
+                              &info->last_pos, offsetof(TREE_ELEMENT, left));
+      }
+    }
+    else if (info->last_pos)
     {
       /*
         We enter this branch for non-DELETE queries after heap_rkey()

storage/heap/hp_rprev.c

@@ -32,7 +32,20 @@ int heap_rprev(HP_INFO *info, uchar *record)
   {
     heap_rb_param custom_arg;
 
-    if (info->last_pos)
+    /* If no active record and last was not deleted */
+    if (!(info->update & (HA_STATE_AKTIV | HA_STATE_NO_KEY |
+                          HA_STATE_DELETED)))
+    {
+      if (info->update & HA_STATE_PREV_FOUND)
+        pos= 0;                            /* Can't search before first row */
+      else
+      {
+        /* Last was 'next' after last record; search after last record */
+        pos= tree_search_edge(&keyinfo->rb_tree, info->parents,
+                              &info->last_pos, offsetof(TREE_ELEMENT, right));
+      }
+    }
+    else if (info->last_pos)
       pos = tree_search_next(&keyinfo->rb_tree, &info->last_pos,
                              offsetof(TREE_ELEMENT, right),
                              offsetof(TREE_ELEMENT, left));

storage/xtradb/buf/buf0buf.c

@@ -2196,7 +2196,7 @@ buf_page_get_gen(
 	ulint		fix_type;
 	ibool		must_read;
 	ulint		retries = 0;
-	mutex_t*	block_mutex;
+	mutex_t*	block_mutex= NULL;
 	trx_t*          trx = NULL;
 	ulint           sec;
 	ulint           ms;