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+# 2015 Apr 24
+#
+# 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 tests that FTS5 handles corrupt databases (i.e. internal
+# inconsistencies in the backing tables) correctly. In this case
+# "correctly" means without crashing.
+#
+
+source [file join [file dirname [info script]] fts5_common.tcl]
+set testprefix fts5corrupt6
+
+# If SQLITE_ENABLE_FTS5 is defined, omit this file.
+ifcapable !fts5 {
+ finish_test
+ return
+}
+sqlite3_fts5_may_be_corrupt 1
+database_may_be_corrupt
+
+proc editblock {block} {
+ binary format Sa* 20000 [string range $block 2 end]
+}
+db func editblock editblock
+
+do_execsql_test 1.0 {
+ CREATE VIRTUAL TABLE ft USING fts5(abc, def);
+ WITH a(i) AS (
+ SELECT 1 UNION ALL SELECT i+1 FROM a WHERE i<1000
+ )
+ INSERT INTO ft SELECT
+ 'abc abc abc abc abc abc abc abc abc abc',
+ 'def def def def def def def def def def'
+ FROM a;
+ UPDATE ft_data SET block = editblock(block) WHERE id=(
+ SELECT id FROM ft_data ORDER BY id LIMIT 1 OFFSET 5
+ );
+}
+
+do_catchsql_test 1.1 {
+ SELECT rowid FROM ft('def') ORDER BY rowid DESC LIMIT 1 OFFSET 9999;
+} {1 {database disk image is malformed}}
+
+
+sqlite3_fts5_may_be_corrupt 0
+finish_test
+