Allow T_POW in constant expressions

From: Date: Fri, 07 Mar 2014 01:18:52 +0000
Subject: Allow T_POW in constant expressions
Groups: php.internals 
Request: Send a blank email to internals+get-72986@lists.php.net to get a copy of this message
Hi guys, Can somebody merge the following PR? https://github.com/php/php-src/pull/613 It fixes bug #66822 by allowing the new power operator to be used in constant expressions, e.g.: const FOO = 2 ** 3 ** 2; echo FOO; // 512 -- -- Tjerk

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