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diff --git a/third_party/sqlite/test/tkt1667.test b/third_party/sqlite/test/tkt1667.test
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+# 2006 February 10
+#
+# The author disclaims copyright to this source code.  In place of
+# a legal notice, here is a blessing:
+#
+#    May you do good and not evil.
+#    May you find forgiveness for yourself and forgive others.
+#    May you share freely, never taking more than you give.
+#
+#***********************************************************************
+# This file implements regression tests for SQLite library.
+#
+# This file implements tests to verify that ticket #1667 has been
+# fixed.  
+#
+#
+# $Id: tkt1667.test,v 1.3 2008/07/12 14:52:20 drh Exp $
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+ifcapable !autovacuum||!tclvar {
+  finish_test
+  return
+}
+
+db close
+file delete -force test.db test.db-journal
+
+# Set the pending byte offset such that the page it is on is
+# the first autovacuum pointer map page in the file (assume a page 
+# size of 1024).
+
+set first_ptrmap_page   [expr 1024/5 + 3]
+set sqlite_pending_byte [expr 1024 * ($first_ptrmap_page-1)]
+
+sqlite db test.db
+
+do_test tkt1667-1 {
+  execsql {
+    PRAGMA auto_vacuum = 1;
+    BEGIN;
+    CREATE TABLE t1(a, b);
+  }
+  for {set i 0} {$i < 500} {incr i} {
+    execsql {
+      INSERT INTO t1 VALUES($i, randstr(1000, 2000))
+    }
+  }
+  execsql {
+    COMMIT;
+  }
+} {}
+for {set i 0} {$i < 500} {incr i} {
+  do_test tkt1667-2.$i.1 {
+    execsql {
+      DELETE FROM t1 WHERE a = $i;
+    }
+  } {}
+  integrity_check tkt1667-2.$i.2
+}
+
+do_test tkt1667-3 {
+  execsql {
+    BEGIN;
+  }
+  for {set i 0} {$i < 500} {incr i} {
+    execsql {
+      INSERT INTO t1 VALUES($i, randstr(1000, 2000))
+    }
+  }
+  execsql {
+    COMMIT;
+  }
+} {}
+do_test tkt1667-4.1 {
+  execsql {
+    DELETE FROM t1;
+  }
+} {}
+integrity_check tkt1667-4.2
+
+finish_test