From: Nikita Popov <nikic@php.net>
Date: Thu, 10 Nov 2016 13:50:39 +0000 (+0100)
Subject: Set result of FREE to unused in block pass
X-Git-Tag: php-7.1.0~3^2~54
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=4f76073b6d084b168f8be0eb4239d9b47894b1c8;p=php

Set result of FREE to unused in block pass
---

diff --git a/ext/opcache/Optimizer/block_pass.c b/ext/opcache/Optimizer/block_pass.c
index e36c533d37..242016e1b3 100644
--- a/ext/opcache/Optimizer/block_pass.c
+++ b/ext/opcache/Optimizer/block_pass.c
@@ -1659,6 +1659,7 @@ static void zend_t_usage(zend_cfg *cfg, zend_op_array *op_array, zend_bitset use
 						case ZEND_BOOL_NOT:
 							if (ZEND_OP1_TYPE(opline) == IS_TMP_VAR) {
 								opline->opcode = ZEND_FREE;
+								SET_UNUSED(opline->result);
 							} else {
 								if (ZEND_OP1_TYPE(opline) == IS_CONST) {
 									literal_dtor(&ZEND_OP1_LITERAL(opline));