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Fix a problem with casting blobs to numeric types. (CVS 4021)

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FossilOrigin-Name: f2ce727c4d798c666e95876a2b67e8a305d82e3a
This commit is contained in:
danielk1977
2007-05-17 16:34:43 +00:00
parent 63c64f3b8c
commit 5b159dc312
5 changed files with 37 additions and 14 deletions
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17
test/cast.test
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@ -11,7 +11,7 @@
# This file implements regression tests for SQLite library. The
# focus of this file is testing the CAST operator.
#
# $Id: cast.test,v 1.6 2007/05/16 11:55:57 drh Exp $
# $Id: cast.test,v 1.7 2007/05/17 16:34:45 danielk1977 Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
@ -262,5 +262,20 @@ do_test case-3.31 {
execsql {SELECT CAST(NULL AS numeric)}
} {{}}
# Test to see if it is possible to trick SQLite into reading past
# the end of a blob when converting it to a number.
do_test cast-3.32.1 {
set blob "1234567890"
set DB [sqlite3_connection_pointer db]
set ::STMT [sqlite3_prepare $DB {SELECT CAST(? AS real)} -1 TAIL]
sqlite3_bind_blob -static $::STMT 1 $blob 5
sqlite3_step $::STMT
} {SQLITE_ROW}
do_test cast-3.32.2 {
sqlite3_column_int $::STMT 0
} {12345}
do_test cast-3.32.3 {
sqlite3_finalize $::STMT
} {SQLITE_OK}
finish_test