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Avoid overflowing the 48-bit mantissa of a floating point number when

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summing large integers in the SUM() function.  Ticket #1664. (CVS 3061)

FossilOrigin-Name: a9169e879de5d5e4192d1681bc3e119fb83e739c
This commit is contained in:
drh
2006-02-09 13:38:19 +00:00
parent ff22e18b3c
commit fc6ad39cf8
4 changed files with 25 additions and 14 deletions
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13
test/func.test
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@ -11,7 +11,7 @@
# This file implements regression tests for SQLite library. The
# focus of this file is testing built-in functions.
#
# $Id: func.test,v 1.44 2006/01/20 15:45:37 drh Exp $
# $Id: func.test,v 1.45 2006/02/09 13:38:21 drh Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
@ -538,4 +538,15 @@ do_test func-18.6 {
}
} {123}
# Ticket #1664: 64-bit overflow in sum()
#
do_test func-18.10 {
execsql {
CREATE TABLE t6(x INTEGER);
INSERT INTO t6 VALUES(1);
INSERT INTO t6 VALUES(1<<62);
SELECT sum(x) - ((1<<62)+1) from t6;
}
} 0
finish_test