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Overview
Comment:Fix an assert() failure in wal2.test caused by messing with the contents of shared memory.
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SHA1:9f452514d96ab8d424eadc55c283c53fe831476d
User & Date: dan 2010-07-14 18:10:03
Context
2010-07-14
18:24
Make the result of an IN or NOT IN expression with an empty set on the right-hand side always either false or true, respectively, even if the left-hand side is NULL. Ticket [80e031a00f45dc] check-in: c288ac64 user: drh tags: trunk
18:10
Fix an assert() failure in wal2.test caused by messing with the contents of shared memory. check-in: 9f452514 user: dan tags: trunk
16:37
Test the libraries response to read-only or unreadable database, WAL and wal-index files. If a WAL file cannot be opened in read/write mode, return SQLITE_CANTOPEN to the caller. check-in: 45bb84c6 user: dan tags: trunk
Changes
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Changes to test/wal2.test.

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  }
} {wal 1 2 3 4 5 6 7 8 9}

do_test wal2-11.1.1 {
  sqlite3 db2 test.db
  execsql { SELECT name FROM sqlite_master } db2
} {t1}
















# Fill up the hash table on the first page of shared memory with 0x55 bytes.
#
set blob [string range [tvfs shm $::filename] 0 16383]
append blob [string repeat [binary format c 0x55] 16384]
tvfs shm $::filename $blob

do_test wal2-11.2 {
  catchsql { SELECT * FROM t1 } db2
} {1 {database disk image is malformed}}

do_test wal2-12.1 {
  catchsql { INSERT INTO t1 VALUES(10, 11, 12) }
} {1 {database disk image is malformed}}

db close
db2 close
tvfs delete

#-------------------------------------------------------------------------
# If a connection is required to create a WAL or SHM file, it creates 
# the new files with the same file-system permissions as the database 







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  }
} {wal 1 2 3 4 5 6 7 8 9}

do_test wal2-11.1.1 {
  sqlite3 db2 test.db
  execsql { SELECT name FROM sqlite_master } db2
} {t1}

# Set all zeroed slots in the first hash table to invalid values.
#
set blob [string range [tvfs shm $::filename] 0 16383]
set I [string range [tvfs shm $::filename] 16384 end]
binary scan $I t* L
set I [list]
foreach p $L {
  lappend I [expr $p ? $p : 400]
}
append blob [binary format t* $I]
tvfs shm $::filename $blob
do_test wal2-11.2 {
  catchsql { INSERT INTO t1 VALUES(10, 11, 12) }
} {1 {database disk image is malformed}}

# Fill up the hash table on the first page of shared memory with 0x55 bytes.
#
set blob [string range [tvfs shm $::filename] 0 16383]
append blob [string repeat [binary format c 55] 16384]
tvfs shm $::filename $blob

do_test wal2-11.3 {
  catchsql { SELECT * FROM t1 } db2
} {1 {database disk image is malformed}}





db close
db2 close
tvfs delete

#-------------------------------------------------------------------------
# If a connection is required to create a WAL or SHM file, it creates 
# the new files with the same file-system permissions as the database