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Correctly allocate new columns array in ALTER TABLE .. ADD COLUMN. Ticket #1183. (CVS 2419)

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FossilOrigin-Name: 3c86e63389b286a49106d8d7009cc63e3914d40f
This commit is contained in:
danielk1977
2005-03-27 01:56:30 +00:00
parent d960d0641e
commit b3a2cced6b
4 changed files with 41 additions and 14 deletions
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31
test/alter3.test
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@ -13,19 +13,19 @@
# file format change that may be used in the future to implement
# "ALTER TABLE ... ADD COLUMN".
#
# $Id: alter3.test,v 1.3 2005/03/17 12:33:14 drh Exp $
# $Id: alter3.test,v 1.4 2005/03/27 01:56:31 danielk1977 Exp $
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
# If SQLITE_OMIT_ALTERTABLE is defined, omit this file.
ifcapable !altertable {
finish_test
return
}
source $testdir/tester.tcl
# Test Organisation:
# ------------------
#
@ -336,4 +336,29 @@ ifcapable vacuum {
} {1}
}
# Ticket #1183 - Make sure adding columns to large tables does not cause
# memory corruption (as was the case before this bug was fixed).
do_test alter3-8.1 {
execsql {
CREATE TABLE t4(c1);
}
} {}
do_test alter3-8.2 {
set cols c1
for {set i 2} {$i < 100} {incr i} {
execsql "
ALTER TABLE t4 ADD c$i
"
lappend cols c$i
}
set ::sql "CREATE TABLE t4([join $cols {, }])"
list
} {}
do_test alter3-8.2 {
execsql {
SELECT sql FROM sqlite_master WHERE name = 't4';
}
} [list $::sql]
finish_test