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Fixed bug #75402 Possible Memory Leak using PDO::CURSOR_SCROLL option

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This commit is contained in:
Anatol Belski 2018-07-30 18:27:59 +02:00
parent ed7e3bc70a
commit cc69950b15
2 changed files with 119 additions and 0 deletions
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6
ext/pdo_pgsql/pgsql_statement.c
View file

@ -165,6 +165,7 @@ static int pgsql_stmt_execute(pdo_stmt_t *stmt)
pdo_pgsql_error_stmt(stmt, status, pdo_pgsql_sqlstate(S->result));
return 0;
}
PQclear(S->result);
/* the cursor was declared correctly */
S->is_prepared = 1;
@ -434,6 +435,11 @@ static int pgsql_stmt_fetch(pdo_stmt_t *stmt,
return 0;
}
if(S->result) {
PQclear(S->result);
S->result = NULL;
}
spprintf(&q, 0, "FETCH %s FROM %s", ori_str, S->cursor_name);
efree(ori_str);
S->result = PQexec(S->H->server, q);

113
ext/pdo_pgsql/tests/bug75402.phpt Normal file
View file

@ -0,0 +1,113 @@
--TEST--
PDO PgSQL Bug #75402 Possible Memory Leak using PDO::CURSOR_SCROLL option
--SKIPIF--
<?php
if (!extension_loaded('pdo') || !extension_loaded('pdo_pgsql')) die('skip not loaded');
require dirname(__FILE__) . '/config.inc';
require dirname(__FILE__) . '/../../../ext/pdo/tests/pdo_test.inc';
PDOTest::skip();
?>
--FILE--
<?php
require dirname(__FILE__) . '/../../../ext/pdo/tests/pdo_test.inc';
$db = PDOTest::test_factory(dirname(__FILE__) . '/common.phpt');
$resp = new \stdClass();
$resp->entries = [];
$db->query('DROP TABLE IF EXISTS bug75402 CASCADE');
$db->query('CREATE TABLE bug75402 (
"id" character varying(64) NOT NULL,
"group_id" character varying(64) NOT NULL,
"submitter" character varying(320) NOT NULL,
"operation" character varying(32) NOT NULL,
"description" character varying(320) NOT NULL,
"stage" character varying(16) NOT NULL,
"status" character varying(64) NOT NULL,
"progress" integer NOT NULL,
"insert_datetime" timestamp(3) NOT NULL,
"begin_datetime" timestamp(3),
"end_datetime" timestamp(3),
"life_hours" integer NOT NULL,
"family" character varying(32) NOT NULL,
"parallelism_group" character varying(32) NOT NULL,
"max_parallelism" integer NOT NULL,
"hidden" boolean NOT NULL,
"abort" boolean NOT NULL,
"order_folder_pathname" character varying(320),
"worker" character varying(32) NOT NULL,
CONSTRAINT "pk_bug75402" PRIMARY KEY ("id")
) WITH (oids = false);');
$db->query("INSERT INTO bug75402 (\"id\", \"group_id\", \"submitter\", \"operation\", \"description\", \"stage\", \"status\", \"progress\", \"insert_datetime\", \"begin_datetime\", \"end_datetime\", \"life_hours\", \"family\", \"parallelism_group\", \"max_parallelism\", \"hidden\", \"abort\", \"order_folder_pathname\", \"worker\") VALUES
('20171016083645_5337', 'G_20171016083645_5337', 'TESTPetunia', 'IMPORT', '', 'DON', 'Completed', 100, '2017-10-16 08:36:45', '2017-10-16 08:36:46', '2017-10-16 08:36:46', 96, 'IMPORT', '', -1, 'f', 'f', 'C:\ProgramData\TestPath\TestApp\Jobs\Jobs\\20171016083645_5337', 'MainService')");
$sql = "SELECT
ID as \"sID\",
GROUP_ID as \"sGroupID\",
SUBMITTER as \"sOwner\",
OPERATION as \"sOperation\",
DESCRIPTION as \"sInfo\",
STAGE as \"sShortStatus\",
STATUS as \"sStatus\",
PROGRESS as \"sProgress\",
HIDDEN as \"bHidden\",
to_char(INSERT_DATETIME, 'IYYY.MM.DD HH24:MI:SS') as \"sDatetime\"
FROM bug75402
ORDER BY INSERT_DATETIME DESC";
if ($db) {
$stmt = $db->prepare($sql,
array(
// With the following options memory is not being
// deallocated
\PDO::ATTR_CURSOR => \PDO::CURSOR_SCROLL
// With the following option memory is de-allocated
// \PDO::ATTR_CURSOR => \PDO::CURSOR_FWDONLY
)
);
$stmt->execute();
while ($entry = $stmt->fetchObject()) {
$resp->entries [] = $entry;
}
$stmt->closeCursor();
$stmt = null;
$db = null;
}
var_dump($resp);
--EXPECT--
object(stdClass)#2 (1) {
["entries"]=>
array(1) {
[0]=>
object(stdClass)#4 (10) {
["sid"]=>
string(19) "20171016083645_5337"
["sgroupid"]=>
string(21) "G_20171016083645_5337"
["sowner"]=>
string(11) "TESTPetunia"
["soperation"]=>
string(6) "IMPORT"
["sinfo"]=>
string(0) ""
["sshortstatus"]=>
string(3) "DON"
["sstatus"]=>
string(9) "Completed"
["sprogress"]=>
string(3) "100"
["bhidden"]=>
bool(false)
["sdatetime"]=>
string(19) "2017.10.16 08:36:45"
}
}
}