Bug #76478 [NEW]: ReflectionParameter#allowsNull() returns false for indirect nullable decls

From: daverandom Operating system: Any PHP version: Irrelevant Package: Reflection related Bug Type: Bug Bug description:ReflectionParameter#allowsNull() returns false for indirect nullable decls Description: ------------ ReflectionParameter#allowsNull() return false for parameters where the nullability is inferred by a constant default value, where the constant has a value of NULL. https://3v4l.org/mUePZ Test script: --------------- <?php const DEFAULT_VALUE = null; function foo(\stdClass $arg = DEFAULT_VALUE) { var_dump($arg); } var_dump((new ReflectionFunction('foo'))->getParameters()[0]->allowsNull()); foo(null); Expected result: ---------------- bool(true) NULL Actual result: -------------- bool(false) NULL -- Edit bug report at https://bugs.php.net/bug.php?id=76478&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=76478&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=76478&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=76478&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=76478&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=76478&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=76478&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=76478&r=needscript Try newer version: https://bugs.php.net/fix.php?id=76478&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=76478&r=support Expected behavior: https://bugs.php.net/fix.php?id=76478&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=76478&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=76478&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=76478&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=76478&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=76478&r=dst IIS Stability: https://bugs.php.net/fix.php?id=76478&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=76478&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=76478&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=76478&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=76478&r=mysqlcfg