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Candidate fix for ticket [6bfb98dfc0c]: Make sure invalid cursors drop all

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references to database pages prior to doing any insert or update.

FossilOrigin-Name: 322a5f086d9ee46017f750df81527799a54ae258
This commit is contained in:
drh
2013-03-27 03:15:23 +00:00
parent e115ff8171
commit 138eeeb1b0
4 changed files with 93 additions and 19 deletions
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61
test/tkt-6bfb98dfc0.test Normal file
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# 2013 March 27
#
# 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. Specifically,
# it tests that ticket [6bfb98dfc0]
#
# The final INSERT in the script below reports that the database is
# corrupt (SQLITE_CORRUPT) and aborts even though the database is not
# corrupt.
#
# PRAGMA page_size=512;
# CREATE TABLE t1(x INTEGER PRIMARY KEY, y);
# INSERT INTO t1 VALUES(1,randomblob(400));
# INSERT INTO t1 VALUES(2,randomblob(400));
# INSERT INTO t1 SELECT x+2, randomblob(400) FROM t1;
# INSERT INTO t1 SELECT x+4, randomblob(400) FROM t1;
# INSERT INTO t1 SELECT x+8, randomblob(400) FROM t1;
# INSERT INTO t1 SELECT x+16, randomblob(400) FROM t1;
# INSERT INTO t1 SELECT x+32, randomblob(400) FROM t1;
# INSERT INTO t1 SELECT x+64, randomblob(400) FROM t1 WHERE x<10;
# CREATE TRIGGER r1 AFTER INSERT ON t1 WHEN new.x=74 BEGIN
# DELETE FROM t1;
# INSERT INTO t1 VALUES(75, randomblob(400));
# INSERT INTO t1 VALUES(76, randomblob(400));
# END;
# INSERT INTO t1 VALUES(74, randomblob(400));
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
do_test tkt-6bfb98dfc0.100 {
db eval {
PRAGMA page_size=512;
CREATE TABLE t1(x INTEGER PRIMARY KEY, y);
INSERT INTO t1 VALUES(1,randomblob(400));
INSERT INTO t1 VALUES(2,randomblob(400));
INSERT INTO t1 SELECT x+2, randomblob(400) FROM t1;
INSERT INTO t1 SELECT x+4, randomblob(400) FROM t1;
INSERT INTO t1 SELECT x+8, randomblob(400) FROM t1;
INSERT INTO t1 SELECT x+16, randomblob(400) FROM t1;
INSERT INTO t1 SELECT x+32, randomblob(400) FROM t1;
INSERT INTO t1 SELECT x+64, randomblob(400) FROM t1 WHERE x<10;
CREATE TRIGGER r1 AFTER INSERT ON t1 WHEN new.x=74 BEGIN
DELETE FROM t1;
INSERT INTO t1 VALUES(75, randomblob(400));
INSERT INTO t1 VALUES(76, randomblob(400));
END;
INSERT INTO t1 VALUES(74, randomblob(400));
SELECT x, length(y) FROM t1 ORDER BY x;
}
} {75 400 76 400}
finish_test