From c412b8b3844b1881a952e1340dba23288a943f96 Mon Sep 17 00:00:00 2001
From: Xinchen Hui <laruence@gmail.com>
Date: Sat, 25 Nov 2017 00:54:15 +0800
Subject: [PATCH] Fixed bug #75556 (Invalid opcode 138/1/1)

---
 NEWS                                   |  3 +++
 ext/opcache/Optimizer/zend_optimizer.c |  2 ++
 ext/opcache/tests/bug75556.phpt        | 26 ++++++++++++++++++++++++++
 3 files changed, 31 insertions(+)
 create mode 100644 ext/opcache/tests/bug75556.phpt

diff --git a/NEWS b/NEWS
index 1c081b4b63..9ed3c42d1a 100644
--- a/NEWS
+++ b/NEWS
@@ -9,6 +9,9 @@ PHP                                                                        NEWS
   . Fixed bug #74862 (Unable to clone instance when private __clone defined).
     (Daniel Ciochiu)
 
+- Opcache:
+  . Fixed bug #75556 (Invalid opcode 138/1/1). (Laruence)
+
 - PCRE:
   . Fixed bug #74183 (preg_last_error not returning error code after error).
     (Andrew Nester)
diff --git a/ext/opcache/Optimizer/zend_optimizer.c b/ext/opcache/Optimizer/zend_optimizer.c
index f55aa41428..d50503d4c5 100644
--- a/ext/opcache/Optimizer/zend_optimizer.c
+++ b/ext/opcache/Optimizer/zend_optimizer.c
@@ -306,6 +306,8 @@ int zend_optimizer_update_op1_const(zend_op_array *op_array,
 			/* This would require a non-local change.
 			 * zend_optimizer_replace_by_const() supports this. */
 			return 0;
+		case ZEND_INSTANCEOF:
+			return 0;
 		case ZEND_CASE:
 		case ZEND_FETCH_LIST:
 			return 0;
diff --git a/ext/opcache/tests/bug75556.phpt b/ext/opcache/tests/bug75556.phpt
new file mode 100644
index 0000000000..1b2511c580
--- /dev/null
+++ b/ext/opcache/tests/bug75556.phpt
@@ -0,0 +1,26 @@
+--TEST--
+Bug #75556 (Invalid opcode 138/1/1)
+--INI--
+opcache.enable=1
+opcache.enable_cli=1
+opcache.optimization_level=-1
+--SKIPIF--
+<?php require_once('skipif.inc'); ?>
+--FILE--
+<?php
+ function createFromFormat($format, $date, ?\DateTimeZone $tz = null): ?\DateTimeInterface
+ {
+	 if ($tz !== null
+			 || ($tz instanceof \DateTimeZone && !in_array($tz->getName(), ['UTC', 'Z'], true))
+		) {
+		 $msg = 'Date objects must have UTC as their timezone';
+		 throw new \UnexpectedValueException($msg);
+	 }
+
+	return null;
+}
+
+var_dump(createFromFormat('m/d/Y', '12/07/2017', null));
+?>
+--EXPECT--
+NULL
-- 
2.49.0