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Bug #72216 Return by reference with finally is not memory safe
Submitted: 2016-05-13 23:33 UTC Modified: -
Votes:1
Avg. Score:5.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:-1 (-100.0%)
From: nikic@php.net Assigned:
Status: Closed Package: Scripting Engine problem
PHP Version: Irrelevant OS:
Private report: No CVE-ID: None
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 [2016-05-13 23:33 UTC] nikic@php.net 
Description:
------------
Test script will valgrind (and show a leak). This issue is closely related to bug #72215, in that both are caused by us not computing the final return value (and backing it up) before the finally.

Test script:
---------------
<?php

function &test() {
    $a = [];
    try {
        return $a[0];
    } finally {
        $a[""] = 42;
    }
}
var_dump(test());

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 [2016-05-16 09:01 UTC] nikic@php.net 
Related To: Bug #72215
 [2016-07-13 12:09 UTC] dmitry@php.net 
Automatic comment on behalf of dmitry@zend.com
Revision: http://git.php.net/?p=php-src.git;a=commit;h=3b8cb2119b33ed6b7701d78d32eed63593cf61ff
Log: Fixed bug #72347 (VERIFY_RETURN type casts visible in finally) Fixed bug #72216 (Return by reference with finally is not memory safe) Fixed bug #72215 (Wrong return value if var modified in finally)
 [2016-07-13 12:09 UTC] dmitry@php.net
-Status: Open +Status: Closed
 [2016-07-20 11:29 UTC] davey@php.net 
Automatic comment on behalf of dmitry@zend.com
Revision: http://git.php.net/?p=php-src.git;a=commit;h=3b8cb2119b33ed6b7701d78d32eed63593cf61ff
Log: Fixed bug #72347 (VERIFY_RETURN type casts visible in finally) Fixed bug #72216 (Return by reference with finally is not memory safe) Fixed bug #72215 (Wrong return value if var modified in finally)
 [2016-10-17 10:11 UTC] bwoebi@php.net 
Automatic comment on behalf of dmitry@zend.com
Revision: http://git.php.net/?p=php-src.git;a=commit;h=3b8cb2119b33ed6b7701d78d32eed63593cf61ff
Log: Fixed bug #72347 (VERIFY_RETURN type casts visible in finally) Fixed bug #72216 (Return by reference with finally is not memory safe) Fixed bug #72215 (Wrong return value if var modified in finally)
 
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