[PHP-BUG] Bug #78017 [NEW]: Null coalesce operator in if paranthesis causes unexpected behaviour

From:             dorndorf at featdd dot de
Operating system: macOS 10.14.4
PHP version:      7.2.18
Package:          PHP Language Specification
Bug Type:         Bug
Bug description:Null coalesce operator in if paranthesis causes unexpected behaviour

Description:
------------
Using the null coalesce operator inside an if paranthesis using and
resulting in false will match the condition anyway when the returned
value is true.

Test script:
---------------
if (true ?? false && 0 > 0) {
    echo 'Should not be true';
}


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Edit bug report at https://bugs.php.net/bug.php?id=78017&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=78017&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=78017&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=78017&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=78017&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=78017&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=78017&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=78017&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=78017&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=78017&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=78017&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=78017&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=78017&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=78017&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=78017&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=78017&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=78017&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=78017&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=78017&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=78017&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=78017&r=mysqlcfg