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diff --git a/libraries/sqlite/unix/sqlite-3.5.1/test/tkt1644.test b/libraries/sqlite/unix/sqlite-3.5.1/test/tkt1644.test
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+# 2006 January 30
+#
+# 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 #1644 is
+# fixed.  Ticket #1644 complains that precompiled statements
+# are not expired correctly as a result of changes to TEMP
+# views and triggers.
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+ifcapable !tempdb||!view {
+  finish_test
+  return
+}  
+
+# Create two tables T1 and T2 and make V1 point to T1.
+do_test tkt1644-1.1 {
+  execsql {
+    CREATE TABLE t1(a);
+    INSERT INTO t1 VALUES(1);
+    CREATE TABLE t2(b);
+    INSERT INTO t2 VALUES(99);
+    CREATE TEMP VIEW v1 AS SELECT * FROM t1;
+    SELECT * FROM v1;
+  }
+} {1}
+
+# The "SELECT * FROM v1" should be in the TCL interface cache below.
+# It will continue to point to T1 unless the cache is invalidated when
+# the view changes.
+#
+do_test tkt1644-1.2 {
+  execsql {
+    DROP VIEW v1;
+    CREATE TEMP VIEW v1 AS SELECT * FROM t2;
+    SELECT * FROM v1;
+  }
+} {99}
+
+# Cache an access to the T1 table.
+#
+do_test tkt1644-1.3 {
+  execsql {
+    SELECT * FROM t1;
+  }
+} {1}
+
+# Create a temp table T1.  Make sure the cache is invalidated so that
+# the statement is recompiled and refers to the empty temp table.
+#
+do_test tkt1644-1.4 {
+  execsql {
+    CREATE TEMP TABLE t1(x);
+  }
+  execsql {
+    SELECT * FROM t1;
+  }
+} {}
+
+ifcapable view {
+  do_test tkt1644-2.1 {
+    execsql {
+      CREATE TEMP TABLE temp_t1(a, b);
+    }
+    set ::DB [sqlite3_connection_pointer db]
+    set ::STMT [sqlite3_prepare $::DB "SELECT * FROM temp_t1" -1 DUMMY]
+    execsql {
+      DROP TABLE temp_t1;
+    }
+    list [sqlite3_step $::STMT] [sqlite3_finalize $::STMT]
+  } {SQLITE_ERROR SQLITE_SCHEMA}
+  
+  do_test tkt1644-2.2 {
+    execsql {
+      CREATE TABLE real_t1(a, b);
+      CREATE TEMP VIEW temp_v1 AS SELECT * FROM real_t1;
+    }
+    set ::DB [sqlite3_connection_pointer db]
+    set ::STMT [sqlite3_prepare $::DB "SELECT * FROM temp_v1" -1 DUMMY]
+    execsql {
+      DROP VIEW temp_v1;
+    }
+    list [sqlite3_step $::STMT] [sqlite3_finalize $::STMT]
+  } {SQLITE_ERROR SQLITE_SCHEMA}
+
+  do_test tkt1644-2.3 {
+    execsql {
+      CREATE TEMP VIEW temp_v1 AS SELECT * FROM real_t1 LIMIT 10 OFFSET 10;
+    }
+    set ::DB [sqlite3_connection_pointer db]
+    set ::STMT [sqlite3_prepare $::DB "SELECT * FROM temp_v1" -1 DUMMY]
+    execsql {
+      DROP VIEW temp_v1;
+    }
+    list [sqlite3_step $::STMT] [sqlite3_finalize $::STMT]
+  } {SQLITE_ERROR SQLITE_SCHEMA}
+}
+
+
+finish_test