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Bug #76007 Different garbage collection behavior on PHP7.1 and 7.2
Submitted: 2018-02-25 22:22 UTC Modified: 2018-10-06 21:58 UTC
From: maestroprog at gmail dot com Assigned:
Status: Verified Package: Scripting Engine problem
PHP Version: 7.2.2 OS: Ubuntu Artful
Private report: No CVE-ID: None
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 [2018-02-25 22:22 UTC] maestroprog at gmail dot com
Description:
------------
This (test script) code on PHP 7.1 throws the exception.
But on PHP 7.2 there is no such.


But if write at the end of the script:

unset($generator);

then PHP 7.2 throws the exception.

Sample: https://3v4l.org/JQEOj

Test script:
---------------
<?php
function shutdown(): \Generator
{
    try {
        yield;
    } finally {
        echo 'UNSET BEFORE yield', PHP_EOL;
        yield;
    }
}

$generator = shutdown();
$generator->rewind();

Expected result:
----------------
UNSET BEFORE yield

Fatal error: Uncaught Error: Cannot yield from finally in a force-closed generator...

Actual result:
--------------
UNSET BEFORE yield


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 [2018-10-06 21:58 UTC] cmb@php.net
-Status: Open +Status: Verified
 [2018-10-06 21:58 UTC] cmb@php.net
I can confirm this behavioral change, which has been introduced
with commit fac9565[1].

[1] <http://git.php.net/?p=php-src.git;a=commit;h=fac95658b3201fdc7924cd3afa44a5f7afc194aa>
 
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Last updated: Mon Nov 19 13:01:26 2018 UTC