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Bug #81064 __get() called accessing existing property which failed with TypeError before
Submitted: 2021-05-21 02:00 UTC Modified: 2021-05-23 08:05 UTC
From: yo at drmad dot org Assigned:
Status: Not a bug Package: Class/Object related
PHP Version: 8.0.6 OS: Manjaro
Private report: No CVE-ID: None
 [2021-05-21 02:00 UTC] yo at drmad dot org
Catching a TypeError while assigning a wrong type value to a typed property makes that property 'disappear', calling __get() magic method if accessed afterwards, and failing with a assigning error, even if there is no assigning.

Tested on PHP 7.4.18 and PHP 8.0.6

Test script:
class test {
    public int $a;

    public function __get($p) {
        echo "$p doesn't exist?\n";

$t = new test;
try {
    $t->a = "Wrong type";
} catch (TypeError $e) {}

echo $t->a;

Expected result:
PHP Fatal error:  Uncaught Error: Typed property test::$a must not be accessed before initialization in /tmp/test.php:15

Actual result:
a doesn't exist?
Fatal error: Uncaught TypeError: Typed property test::$a must be int, null used
in /tmp/test.php:15

("Cannot assign null to property test::$a of type int" in PHP 8)


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 [2021-05-23 04:46 UTC]
-Status: Open +Status: Not a bug
 [2021-05-23 04:46 UTC]
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This has been fixed in 8.1
 [2021-05-23 08:05 UTC]
This is also fixed in PHP 8.0, just not released yet.
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