Add a couple of tests. Build only on linux, do not pass.

	modified:   Makefile
	modified:   all_test.go
	modified:   generator.go
	modified:   internal/bin/bin_linux_386.go
	modified:   internal/bin/bin_linux_amd64.go
	new file:   internal/mptest/mptest_linux_386.go
	new file:   internal/mptest/mptest_linux_amd64.go
	new file:   internal/threadtest1/threadtest1_linux_386.go
	new file:   internal/threadtest1/threadtest1_linux_amd64.go
	new file:   internal/threadtest2/threadtest2_linux_386.go
	new file:   internal/threadtest2/threadtest2_linux_amd64.go
	new file:   internal/threadtest4/threadtest4_linux_386.go
	new file:   internal/threadtest4/threadtest4_linux_amd64.go
	modified:   main.c
	new file:   sqlite.h
	new file:   testdata/mptest/config01.test
	new file:   testdata/mptest/config02.test
	new file:   testdata/mptest/crash01.test
	new file:   testdata/mptest/crash02.subtest
	new file:   testdata/mptest/multiwrite01.test

5 files changed, 743 insertions, 0 deletions

diff --git a/testdata/mptest/config01.test b/testdata/mptest/config01.test
new file mode 100644
index 0000000..683ee91
--- /dev/null
+++ b/testdata/mptest/config01.test
@@ -0,0 +1,46 @@
+/*
+** Configure five tasks in different ways, then run tests.
+*/
+--if vfsname() GLOB 'unix'
+PRAGMA page_size=8192;
+--task 1
+  PRAGMA journal_mode=PERSIST;
+  PRAGMA mmap_size=0;
+--end
+--task 2
+  PRAGMA journal_mode=TRUNCATE;
+  PRAGMA mmap_size=28672;
+--end
+--task 3
+  PRAGMA journal_mode=MEMORY;
+--end
+--task 4
+  PRAGMA journal_mode=OFF;
+--end
+--task 4
+  PRAGMA mmap_size(268435456);
+--end
+--source multiwrite01.test
+--wait all
+PRAGMA page_size=16384;
+VACUUM;
+CREATE TABLE pgsz(taskid, sz INTEGER);
+--task 1
+  INSERT INTO pgsz VALUES(1, eval('PRAGMA page_size'));
+--end
+--task 2
+  INSERT INTO pgsz VALUES(2, eval('PRAGMA page_size'));
+--end
+--task 3
+  INSERT INTO pgsz VALUES(3, eval('PRAGMA page_size'));
+--end
+--task 4
+  INSERT INTO pgsz VALUES(4, eval('PRAGMA page_size'));
+--end
+--task 5
+  INSERT INTO pgsz VALUES(5, eval('PRAGMA page_size'));
+--end
+--source multiwrite01.test
+--wait all
+SELECT sz FROM pgsz;
+--match 16384 16384 16384 16384 16384
diff --git a/testdata/mptest/config02.test b/testdata/mptest/config02.test
new file mode 100644
index 0000000..7d4b278
--- /dev/null
+++ b/testdata/mptest/config02.test
@@ -0,0 +1,123 @@
+/*
+** Configure five tasks in different ways, then run tests.
+*/
+PRAGMA page_size=512;
+--task 1
+  PRAGMA mmap_size=0;
+--end
+--task 2
+  PRAGMA mmap_size=28672;
+--end
+--task 3
+  PRAGMA mmap_size=8192;
+--end
+--task 4
+  PRAGMA mmap_size=65536;
+--end
+--task 5
+  PRAGMA mmap_size=268435456;
+--end
+--source multiwrite01.test
+--source crash02.subtest
+PRAGMA page_size=1024;
+VACUUM;
+CREATE TABLE pgsz(taskid, sz INTEGER);
+--task 1
+  INSERT INTO pgsz VALUES(1, eval('PRAGMA page_size'));
+--end
+--task 2
+  INSERT INTO pgsz VALUES(2, eval('PRAGMA page_size'));
+--end
+--task 3
+  INSERT INTO pgsz VALUES(3, eval('PRAGMA page_size'));
+--end
+--task 4
+  INSERT INTO pgsz VALUES(4, eval('PRAGMA page_size'));
+--end
+--task 5
+  INSERT INTO pgsz VALUES(5, eval('PRAGMA page_size'));
+--end
+--source multiwrite01.test
+--source crash02.subtest
+--wait all
+SELECT sz FROM pgsz;
+--match 1024 1024 1024 1024 1024
+PRAGMA page_size=2048;
+VACUUM;
+DELETE FROM pgsz;
+--task 1
+  INSERT INTO pgsz VALUES(1, eval('PRAGMA page_size'));
+--end
+--task 2
+  INSERT INTO pgsz VALUES(2, eval('PRAGMA page_size'));
+--end
+--task 3
+  INSERT INTO pgsz VALUES(3, eval('PRAGMA page_size'));
+--end
+--task 4
+  INSERT INTO pgsz VALUES(4, eval('PRAGMA page_size'));
+--end
+--task 5
+  INSERT INTO pgsz VALUES(5, eval('PRAGMA page_size'));
+--end
+--source multiwrite01.test
+--source crash02.subtest
+--wait all
+SELECT sz FROM pgsz;
+--match 2048 2048 2048 2048 2048
+PRAGMA page_size=8192;
+VACUUM;
+DELETE FROM pgsz;
+--task 1
+  INSERT INTO pgsz VALUES(1, eval('PRAGMA page_size'));
+--end
+--task 2
+  INSERT INTO pgsz VALUES(2, eval('PRAGMA page_size'));
+--end
+--task 3
+  INSERT INTO pgsz VALUES(3, eval('PRAGMA page_size'));
+--end
+--task 4
+  INSERT INTO pgsz VALUES(4, eval('PRAGMA page_size'));
+--end
+--task 5
+  INSERT INTO pgsz VALUES(5, eval('PRAGMA page_size'));
+--end
+--source multiwrite01.test
+--source crash02.subtest
+--wait all
+SELECT sz FROM pgsz;
+--match 8192 8192 8192 8192 8192
+PRAGMA page_size=16384;
+VACUUM;
+DELETE FROM pgsz;
+--task 1
+  INSERT INTO pgsz VALUES(1, eval('PRAGMA page_size'));
+--end
+--task 2
+  INSERT INTO pgsz VALUES(2, eval('PRAGMA page_size'));
+--end
+--task 3
+  INSERT INTO pgsz VALUES(3, eval('PRAGMA page_size'));
+--end
+--task 4
+  INSERT INTO pgsz VALUES(4, eval('PRAGMA page_size'));
+--end
+--task 5
+  INSERT INTO pgsz VALUES(5, eval('PRAGMA page_size'));
+--end
+--source multiwrite01.test
+--source crash02.subtest
+--wait all
+SELECT sz FROM pgsz;
+--match 16384 16384 16384 16384 16384
+PRAGMA auto_vacuum=FULL;
+VACUUM;
+--source multiwrite01.test
+--source crash02.subtest
+--wait all
+PRAGMA auto_vacuum=FULL;
+PRAGMA page_size=512;
+VACUUM;
+--source multiwrite01.test
+--source crash02.subtest
diff --git a/testdata/mptest/crash01.test b/testdata/mptest/crash01.test
new file mode 100644
index 0000000..f1483df
--- /dev/null
+++ b/testdata/mptest/crash01.test
@@ -0,0 +1,106 @@
+/* Test cases involving incomplete transactions that must be rolled back.
+*/
+--task 1
+  DROP TABLE IF EXISTS t1;
+  CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
+  --sleep 1
+  INSERT INTO t1 VALUES(1, randomblob(2000));
+  INSERT INTO t1 VALUES(2, randomblob(1000));
+  --sleep 1
+  INSERT INTO t1 SELECT a+2, randomblob(1500) FROM t1;
+  INSERT INTO t1 SELECT a+4, randomblob(1500) FROM t1;
+  INSERT INTO t1 SELECT a+8, randomblob(1500) FROM t1;
+  --sleep 1
+  INSERT INTO t1 SELECT a+16, randomblob(1500) FROM t1;
+  --sleep 1
+  INSERT INTO t1 SELECT a+32, randomblob(1500) FROM t1;
+  SELECT count(*) FROM t1;
+  --match 64
+  SELECT avg(length(b)) FROM t1;
+  --match 1500.0
+  --sleep 2
+  UPDATE t1 SET b='x'||a||'y';
+  SELECT sum(length(b)) FROM t1;
+  --match 247
+  SELECT a FROM t1 WHERE b='x17y';
+  --match 17
+  CREATE INDEX t1b ON t1(b);
+  SELECT a FROM t1 WHERE b='x17y';
+  --match 17
+  SELECT a FROM t1 WHERE b GLOB 'x2?y' ORDER BY b DESC LIMIT 5;
+  --match 29 28 27 26 25
+--end
+--wait 1
+--task 2
+  DROP TABLE IF EXISTS t2;
+  CREATE TABLE t2(a INTEGER PRIMARY KEY, b);
+  INSERT INTO t2 SELECT a, b FROM t1;
+  UPDATE t1 SET b='x'||a||'y';
+  SELECT sum(length(b)) FROM t2;
+  --match 247
+  SELECT a FROM t2 WHERE b='x17y';
+  --match 17
+  CREATE INDEX t2b ON t2(b);
+  SELECT a FROM t2 WHERE b='x17y';
+  --match 17
+  SELECT a FROM t2 WHERE b GLOB 'x2?y' ORDER BY b DESC LIMIT 5;
+  --match 29 28 27 26 25
+--end
+--task 3
+  DROP TABLE IF EXISTS t3;
+  CREATE TABLE t3(a INTEGER PRIMARY KEY, b);
+  INSERT INTO t3 SELECT a, b FROM t1;
+  UPDATE t1 SET b='x'||a||'y';
+  SELECT sum(length(b)) FROM t3;
+  --match 247
+  SELECT a FROM t3 WHERE b='x17y';
+  --match 17
+  CREATE INDEX t3b ON t3(b);
+  SELECT a FROM t3 WHERE b='x17y';
+  --match 17
+  SELECT a FROM t3 WHERE b GLOB 'x2?y' ORDER BY b DESC LIMIT 5;
+  --match 29 28 27 26 25
+--end
+--task 4
+  DROP TABLE IF EXISTS t4;
+  CREATE TABLE t4(a INTEGER PRIMARY KEY, b);
+  INSERT INTO t4 SELECT a, b FROM t1;
+  UPDATE t1 SET b='x'||a||'y';
+  SELECT sum(length(b)) FROM t4;
+  --match 247
+  SELECT a FROM t4 WHERE b='x17y';
+  --match 17
+  CREATE INDEX t4b ON t4(b);
+  SELECT a FROM t4 WHERE b='x17y';
+  --match 17
+  SELECT a FROM t4 WHERE b GLOB 'x2?y' ORDER BY b DESC LIMIT 5;
+  --match 29 28 27 26 25
+--end
+--task 5
+  DROP TABLE IF EXISTS t5;
+  CREATE TABLE t5(a INTEGER PRIMARY KEY, b);
+  INSERT INTO t5 SELECT a, b FROM t1;
+  UPDATE t1 SET b='x'||a||'y';
+  SELECT sum(length(b)) FROM t5;
+  --match 247
+  SELECT a FROM t5 WHERE b='x17y';
+  --match 17
+  CREATE INDEX t5b ON t5(b);
+  SELECT a FROM t5 WHERE b='x17y';
+  --match 17
+  SELECT a FROM t5 WHERE b GLOB 'x2?y' ORDER BY b DESC LIMIT 5;
+  --match 29 28 27 26 25
+--end
+
+--wait all
+/* After the database file has been set up, run the crash2 subscript
+** multiple times. */
+--source crash02.subtest
+--source crash02.subtest
+--source crash02.subtest
+--source crash02.subtest
+--source crash02.subtest
+--source crash02.subtest
+--source crash02.subtest
+--source crash02.subtest
+--source crash02.subtest
diff --git a/testdata/mptest/crash02.subtest b/testdata/mptest/crash02.subtest
new file mode 100644
index 0000000..86f64dd
--- /dev/null
+++ b/testdata/mptest/crash02.subtest
@@ -0,0 +1,53 @@
+/*
+** This script is called from crash01.test and config02.test and perhaps other
+** script.  After the database file has been set up, make a big rollback 
+** journal in client 1, then crash client 1.
+** Then in the other clients, do an integrity check.
+*/
+--task 1 leave-hot-journal
+  --sleep 5
+  --finish
+  PRAGMA cache_size=10;
+  BEGIN;
+  UPDATE t1 SET b=randomblob(20000);
+  UPDATE t2 SET b=randomblob(20000);
+  UPDATE t3 SET b=randomblob(20000);
+  UPDATE t4 SET b=randomblob(20000);
+  UPDATE t5 SET b=randomblob(20000);
+  UPDATE t1 SET b=NULL;
+  UPDATE t2 SET b=NULL;
+  UPDATE t3 SET b=NULL;
+  UPDATE t4 SET b=NULL;
+  UPDATE t5 SET b=NULL;
+  --print Task one crashing an incomplete transaction
+  --exit 1
+--end
+--task 2 integrity_check-2
+  SELECT count(*) FROM t1;
+  --match 64
+  --sleep 100
+  PRAGMA integrity_check(10);
+  --match ok
+--end
+--task 3 integrity_check-3
+  SELECT count(*) FROM t1;
+  --match 64
+  --sleep 100
+  PRAGMA integrity_check(10);
+  --match ok
+--end
+--task 4 integrity_check-4
+  SELECT count(*) FROM t1;
+  --match 64
+  --sleep 100
+  PRAGMA integrity_check(10);
+  --match ok
+--end
+--task 5 integrity_check-5
+  SELECT count(*) FROM t1;
+  --match 64
+  --sleep 100
+  PRAGMA integrity_check(10);
+  --match ok
+--end
+--wait all
diff --git a/testdata/mptest/multiwrite01.test b/testdata/mptest/multiwrite01.test
new file mode 100644
index 0000000..7062ae0
--- /dev/null
+++ b/testdata/mptest/multiwrite01.test
@@ -0,0 +1,415 @@
+/*
+** This script sets up five different tasks all writing and updating
+** the database at the same time, but each in its own table.
+*/
+--task 1 build-t1
+  DROP TABLE IF EXISTS t1;
+  CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
+  --sleep 1
+  INSERT INTO t1 VALUES(1, randomblob(2000));
+  INSERT INTO t1 VALUES(2, randomblob(1000));
+  --sleep 1
+  INSERT INTO t1 SELECT a+2, randomblob(1500) FROM t1;
+  INSERT INTO t1 SELECT a+4, randomblob(1500) FROM t1;
+  INSERT INTO t1 SELECT a+8, randomblob(1500) FROM t1;
+  --sleep 1
+  INSERT INTO t1 SELECT a+16, randomblob(1500) FROM t1;
+  --sleep 1
+  INSERT INTO t1 SELECT a+32, randomblob(1500) FROM t1;
+  SELECT count(*) FROM t1;
+  --match 64
+  SELECT avg(length(b)) FROM t1;
+  --match 1500.0
+  --sleep 2
+  UPDATE t1 SET b='x'||a||'y';
+  SELECT sum(length(b)) FROM t1;
+  --match 247
+  SELECT a FROM t1 WHERE b='x17y';
+  --match 17
+  CREATE INDEX t1b ON t1(b);
+  SELECT a FROM t1 WHERE b='x17y';
+  --match 17
+  SELECT a FROM t1 WHERE b GLOB 'x2?y' ORDER BY b DESC LIMIT 5;
+  --match 29 28 27 26 25
+--end
+
+
+--task 2 build-t2
+  DROP TABLE IF EXISTS t2;
+  CREATE TABLE t2(a INTEGER PRIMARY KEY, b);
+  --sleep 1
+  INSERT INTO t2 VALUES(1, randomblob(2000));
+  INSERT INTO t2 VALUES(2, randomblob(1000));
+  --sleep 1
+  INSERT INTO t2 SELECT a+2, randomblob(1500) FROM t2;
+  INSERT INTO t2 SELECT a+4, randomblob(1500) FROM t2;
+  INSERT INTO t2 SELECT a+8, randomblob(1500) FROM t2;
+  --sleep 1
+  INSERT INTO t2 SELECT a+16, randomblob(1500) FROM t2;
+  --sleep 1
+  INSERT INTO t2 SELECT a+32, randomblob(1500) FROM t2;
+  SELECT count(*) FROM t2;
+  --match 64
+  SELECT avg(length(b)) FROM t2;
+  --match 1500.0
+  --sleep 2
+  UPDATE t2 SET b='x'||a||'y';
+  SELECT sum(length(b)) FROM t2;
+  --match 247
+  SELECT a FROM t2 WHERE b='x17y';
+  --match 17
+  CREATE INDEX t2b ON t2(b);
+  SELECT a FROM t2 WHERE b='x17y';
+  --match 17
+  SELECT a FROM t2 WHERE b GLOB 'x2?y' ORDER BY b DESC LIMIT 5;
+  --match 29 28 27 26 25
+--end
+
+--task 3 build-t3
+  DROP TABLE IF EXISTS t3;
+  CREATE TABLE t3(a INTEGER PRIMARY KEY, b);
+  --sleep 1
+  INSERT INTO t3 VALUES(1, randomblob(2000));
+  INSERT INTO t3 VALUES(2, randomblob(1000));
+  --sleep 1
+  INSERT INTO t3 SELECT a+2, randomblob(1500) FROM t3;
+  INSERT INTO t3 SELECT a+4, randomblob(1500) FROM t3;
+  INSERT INTO t3 SELECT a+8, randomblob(1500) FROM t3;
+  --sleep 1
+  INSERT INTO t3 SELECT a+16, randomblob(1500) FROM t3;
+  --sleep 1
+  INSERT INTO t3 SELECT a+32, randomblob(1500) FROM t3;
+  SELECT count(*) FROM t3;
+  --match 64
+  SELECT avg(length(b)) FROM t3;
+  --match 1500.0
+  --sleep 2
+  UPDATE t3 SET b='x'||a||'y';
+  SELECT sum(length(b)) FROM t3;
+  --match 247
+  SELECT a FROM t3 WHERE b='x17y';
+  --match 17
+  CREATE INDEX t3b ON t3(b);
+  SELECT a FROM t3 WHERE b='x17y';
+  --match 17
+  SELECT a FROM t3 WHERE b GLOB 'x2?y' ORDER BY b DESC LIMIT 5;
+  --match 29 28 27 26 25
+--end
+
+--task 4 build-t4
+  DROP TABLE IF EXISTS t4;
+  CREATE TABLE t4(a INTEGER PRIMARY KEY, b);
+  --sleep 1
+  INSERT INTO t4 VALUES(1, randomblob(2000));
+  INSERT INTO t4 VALUES(2, randomblob(1000));
+  --sleep 1
+  INSERT INTO t4 SELECT a+2, randomblob(1500) FROM t4;
+  INSERT INTO t4 SELECT a+4, randomblob(1500) FROM t4;
+  INSERT INTO t4 SELECT a+8, randomblob(1500) FROM t4;
+  --sleep 1
+  INSERT INTO t4 SELECT a+16, randomblob(1500) FROM t4;
+  --sleep 1
+  INSERT INTO t4 SELECT a+32, randomblob(1500) FROM t4;
+  SELECT count(*) FROM t4;
+  --match 64
+  SELECT avg(length(b)) FROM t4;
+  --match 1500.0
+  --sleep 2
+  UPDATE t4 SET b='x'||a||'y';
+  SELECT sum(length(b)) FROM t4;
+  --match 247
+  SELECT a FROM t4 WHERE b='x17y';
+  --match 17
+  CREATE INDEX t4b ON t4(b);
+  SELECT a FROM t4 WHERE b='x17y';
+  --match 17
+  SELECT a FROM t4 WHERE b GLOB 'x2?y' ORDER BY b DESC LIMIT 5;
+  --match 29 28 27 26 25
+--end
+
+--task 5 build-t5
+  DROP TABLE IF EXISTS t5;
+  CREATE TABLE t5(a INTEGER PRIMARY KEY, b);
+  --sleep 1
+  INSERT INTO t5 VALUES(1, randomblob(2000));
+  INSERT INTO t5 VALUES(2, randomblob(1000));
+  --sleep 1
+  INSERT INTO t5 SELECT a+2, randomblob(1500) FROM t5;
+  INSERT INTO t5 SELECT a+4, randomblob(1500) FROM t5;
+  INSERT INTO t5 SELECT a+8, randomblob(1500) FROM t5;
+  --sleep 1
+  INSERT INTO t5 SELECT a+16, randomblob(1500) FROM t5;
+  --sleep 1
+  INSERT INTO t5 SELECT a+32, randomblob(1500) FROM t5;
+  SELECT count(*) FROM t5;
+  --match 64
+  SELECT avg(length(b)) FROM t5;
+  --match 1500.0
+  --sleep 2
+  UPDATE t5 SET b='x'||a||'y';
+  SELECT sum(length(b)) FROM t5;
+  --match 247
+  SELECT a FROM t5 WHERE b='x17y';
+  --match 17
+  CREATE INDEX t5b ON t5(b);
+  SELECT a FROM t5 WHERE b='x17y';
+  --match 17
+  SELECT a FROM t5 WHERE b GLOB 'x2?y' ORDER BY b DESC LIMIT 5;
+  --match 29 28 27 26 25
+--end
+
+--wait all
+SELECT count(*), sum(length(b)) FROM t1;
+--match 64 247
+SELECT count(*), sum(length(b)) FROM t2;
+--match 64 247
+SELECT count(*), sum(length(b)) FROM t3;
+--match 64 247
+SELECT count(*), sum(length(b)) FROM t4;
+--match 64 247
+SELECT count(*), sum(length(b)) FROM t5;
+--match 64 247
+
+--task 1
+  SELECT t1.a FROM t1, t2
+   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
+   ORDER BY t1.a LIMIT 4
+  --match 33 34 35 36
+  SELECT t3.a FROM t3, t4
+   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
+   ORDER BY t3.a LIMIT 7
+  --match 45 46 47 48 49 50 51
+--end
+--task 5
+  SELECT t1.a FROM t1, t2
+   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
+   ORDER BY t1.a LIMIT 4
+  --match 33 34 35 36
+  SELECT t3.a FROM t3, t4
+   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
+   ORDER BY t3.a LIMIT 7
+  --match 45 46 47 48 49 50 51
+--end
+--task 3
+  SELECT t1.a FROM t1, t2
+   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
+   ORDER BY t1.a LIMIT 4
+  --match 33 34 35 36
+  SELECT t3.a FROM t3, t4
+   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
+   ORDER BY t3.a LIMIT 7
+  --match 45 46 47 48 49 50 51
+--end
+--task 2
+  SELECT t1.a FROM t1, t2
+   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
+   ORDER BY t1.a LIMIT 4
+  --match 33 34 35 36
+  SELECT t3.a FROM t3, t4
+   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
+   ORDER BY t3.a LIMIT 7
+  --match 45 46 47 48 49 50 51
+--end
+--task 4
+  SELECT t1.a FROM t1, t2
+   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
+   ORDER BY t1.a LIMIT 4
+  --match 33 34 35 36
+  SELECT t3.a FROM t3, t4
+   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
+   ORDER BY t3.a LIMIT 7
+  --match 45 46 47 48 49 50 51
+--end
+--wait all
+
+--task 5
+  DROP INDEX t5b;
+  --sleep 5
+  PRAGMA integrity_check(10);
+  --match ok
+  CREATE INDEX t5b ON t5(b DESC);
+--end
+--task 3
+  DROP INDEX t3b;
+  --sleep 5
+  PRAGMA integrity_check(10);
+  --match ok
+  CREATE INDEX t3b ON t3(b DESC);
+--end
+--task 1
+  DROP INDEX t1b;
+  --sleep 5
+  PRAGMA integrity_check(10);
+  --match ok
+  CREATE INDEX t1b ON t1(b DESC);
+--end
+--task 2
+  DROP INDEX t2b;
+  --sleep 5
+  PRAGMA integrity_check(10);
+  --match ok
+  CREATE INDEX t2b ON t2(b DESC);
+--end
+--task 4
+  DROP INDEX t4b;
+  --sleep 5
+  PRAGMA integrity_check(10);
+  --match ok
+  CREATE INDEX t4b ON t4(b DESC);
+--end
+--wait all
+
+--task 1
+  SELECT t1.a FROM t1, t2
+   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
+   ORDER BY t1.a LIMIT 4
+  --match 33 34 35 36
+  SELECT t3.a FROM t3, t4
+   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
+   ORDER BY t3.a LIMIT 7
+  --match 45 46 47 48 49 50 51
+--end
+--task 5
+  SELECT t1.a FROM t1, t2
+   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
+   ORDER BY t1.a LIMIT 4
+  --match 33 34 35 36
+  SELECT t3.a FROM t3, t4
+   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
+   ORDER BY t3.a LIMIT 7
+  --match 45 46 47 48 49 50 51
+--end
+--task 3
+  SELECT t1.a FROM t1, t2
+   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
+   ORDER BY t1.a LIMIT 4
+  --match 33 34 35 36
+  SELECT t3.a FROM t3, t4
+   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
+   ORDER BY t3.a LIMIT 7
+  --match 45 46 47 48 49 50 51
+--end
+--task 2
+  SELECT t1.a FROM t1, t2
+   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
+   ORDER BY t1.a LIMIT 4
+  --match 33 34 35 36
+  SELECT t3.a FROM t3, t4
+   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
+   ORDER BY t3.a LIMIT 7
+  --match 45 46 47 48 49 50 51
+--end
+--task 4
+  SELECT t1.a FROM t1, t2
+   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
+   ORDER BY t1.a LIMIT 4
+  --match 33 34 35 36
+  SELECT t3.a FROM t3, t4
+   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
+   ORDER BY t3.a LIMIT 7
+  --match 45 46 47 48 49 50 51
+--end
+--wait all
+
+VACUUM;
+PRAGMA integrity_check(10);
+--match ok
+
+--task 1
+  UPDATE t1 SET b=randomblob(20000);
+  --sleep 5
+  UPDATE t1 SET b='x'||a||'y';
+  SELECT a FROM t1 WHERE b='x63y';
+  --match 63
+--end
+--task 2
+  UPDATE t2 SET b=randomblob(20000);
+  --sleep 5
+  UPDATE t2 SET b='x'||a||'y';
+  SELECT a FROM t2 WHERE b='x63y';
+  --match 63
+--end
+--task 3
+  UPDATE t3 SET b=randomblob(20000);
+  --sleep 5
+  UPDATE t3 SET b='x'||a||'y';
+  SELECT a FROM t3 WHERE b='x63y';
+  --match 63
+--end
+--task 4
+  UPDATE t4 SET b=randomblob(20000);
+  --sleep 5
+  UPDATE t4 SET b='x'||a||'y';
+  SELECT a FROM t4 WHERE b='x63y';
+  --match 63
+--end
+--task 5
+  UPDATE t5 SET b=randomblob(20000);
+  --sleep 5
+  UPDATE t5 SET b='x'||a||'y';
+  SELECT a FROM t5 WHERE b='x63y';
+  --match 63
+--end
+--wait all
+
+--task 1
+  SELECT t1.a FROM t1, t2
+   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
+   ORDER BY t1.a LIMIT 4
+  --match 33 34 35 36
+  SELECT t3.a FROM t3, t4
+   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
+   ORDER BY t3.a LIMIT 7
+  --match 45 46 47 48 49 50 51
+  PRAGMA integrity_check;
+  --match ok
+--end
+--task 5
+  SELECT t1.a FROM t1, t2
+   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
+   ORDER BY t1.a LIMIT 4
+  --match 33 34 35 36
+  SELECT t3.a FROM t3, t4
+   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
+   ORDER BY t3.a LIMIT 7
+  --match 45 46 47 48 49 50 51
+  PRAGMA integrity_check;
+  --match ok
+--end
+--task 3
+  SELECT t1.a FROM t1, t2
+   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
+   ORDER BY t1.a LIMIT 4
+  --match 33 34 35 36
+  SELECT t3.a FROM t3, t4
+   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
+   ORDER BY t3.a LIMIT 7
+  --match 45 46 47 48 49 50 51
+  PRAGMA integrity_check;
+  --match ok
+--end
+--task 2
+  SELECT t1.a FROM t1, t2
+   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
+   ORDER BY t1.a LIMIT 4
+  --match 33 34 35 36
+  SELECT t3.a FROM t3, t4
+   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
+   ORDER BY t3.a LIMIT 7
+  --match 45 46 47 48 49 50 51
+  PRAGMA integrity_check;
+  --match ok
+--end
+--task 4
+  SELECT t1.a FROM t1, t2
+   WHERE t2.b GLOB 'x3?y' AND t1.b=('x'||(t2.a+3)||'y')
+   ORDER BY t1.a LIMIT 4
+  --match 33 34 35 36
+  SELECT t3.a FROM t3, t4
+   WHERE t4.b GLOB 'x4?y' AND t3.b=('x'||(t4.a+5)||'y')
+   ORDER BY t3.a LIMIT 7
+  --match 45 46 47 48 49 50 51
+  PRAGMA integrity_check;
+  --match ok
+--end
+--wait all