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Fix a bug in the OP_MemStore operator of the VDBE. A realloc() might

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occur but pointer to the old buffer were not being moved over to
the new buffer. (CVS 752)

FossilOrigin-Name: 29145746f34438bd830c763872c5e82572150357
This commit is contained in:
drh
2002-09-17 03:20:46 +00:00
parent 995d71b715
commit 3e56c04c4e
4 changed files with 55 additions and 11 deletions
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40
test/misc1.test
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@ -13,7 +13,7 @@
# This file implements tests for miscellanous features that were
# left out of other test files.
#
# $Id: misc1.test,v 1.14 2002/08/18 22:41:22 drh Exp $
# $Id: misc1.test,v 1.15 2002/09/17 03:20:46 drh Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
@ -398,6 +398,42 @@ do_test misc1-12.13 {
}
} {1 2 2 3 4 2}
# There was a problem with realloc() in the OP_MemStore operation of
# the VDBE. A buffer was being reallocated but some pointers into
# the old copy of the buffer were not being moved over to the new copy.
# The following code tests for the problem.
#
do_test misc1-13.1 {
execsql {
CREATE TABLE t9(x,y);
INSERT INTO t9 VALUES('one',1);
INSERT INTO t9 VALUES('two',2);
INSERT INTO t9 VALUES('three',3);
INSERT INTO t9 VALUES('four',4);
INSERT INTO t9 VALUES('five',5);
INSERT INTO t9 VALUES('six',6);
INSERT INTO t9 VALUES('seven',7);
INSERT INTO t9 VALUES('eight',8);
INSERT INTO t9 VALUES('nine',9);
INSERT INTO t9 VALUES('ten',10);
INSERT INTO t9 VALUES('eleven',11);
SELECT y FROM t9
WHERE x=(SELECT x FROM t9 WHERE y=1)
OR x=(SELECT x FROM t9 WHERE y=2)
OR x=(SELECT x FROM t9 WHERE y=3)
OR x=(SELECT x FROM t9 WHERE y=4)
OR x=(SELECT x FROM t9 WHERE y=5)
OR x=(SELECT x FROM t9 WHERE y=6)
OR x=(SELECT x FROM t9 WHERE y=7)
OR x=(SELECT x FROM t9 WHERE y=8)
OR x=(SELECT x FROM t9 WHERE y=9)
OR x=(SELECT x FROM t9 WHERE y=10)
OR x=(SELECT x FROM t9 WHERE y=11)
OR x=(SELECT x FROM t9 WHERE y=12)
OR x=(SELECT x FROM t9 WHERE y=13)
OR x=(SELECT x FROM t9 WHERE y=14)
;
}
} {1 2 3 4 5 6 7 8 9 10 11}
finish_test