qm_assign_fix.diff

diff --git a/ext/opcache/Optimizer/block_pass.c b/ext/opcache/Optimizer/block_pass.c
index 46ec6c0769..983d5cf1a9 100644
--- a/ext/opcache/Optimizer/block_pass.c
+++ b/ext/opcache/Optimizer/block_pass.c
@@ -892,7 +892,12 @@ optimize_const_unary_op:
 				           !zend_bitset_in(used_ext, VAR_NUM(opline->op1.var))) {
 					/* T1 = ..., T2 = QM_ASSIGN(T1) to T2 = ..., NOP */
 					src = VAR_SOURCE(opline->op1);
-					if (src) {
+					if (src &&
+						src->opcode != ZEND_COPY_TMP &&
+						src->opcode != ZEND_ADD_ARRAY_ELEMENT &&
+						src->opcode != ZEND_ADD_ARRAY_UNPACK &&
+						(src->opcode != ZEND_DECLARE_LAMBDA_FUNCTION ||
+						 src == opline -1)) {
 						src->result.var = opline->result.var;
 						VAR_SOURCE(opline->op1) = NULL;
 						VAR_SOURCE(opline->result) = src;
diff --git a/ext/opcache/tests/opt/block_pass_001.phpt b/ext/opcache/tests/opt/block_pass_001.phpt
new file mode 100644
index 0000000000..788994ea4e
--- /dev/null
+++ b/ext/opcache/tests/opt/block_pass_001.phpt
@@ -0,0 +1,24 @@
+--TEST--
+Block Pass 001: QM_ASSIGN and DECLARE_LAMBDA_FUNCTION
+--INI--
+opcache.enable=1
+opcache.enable_cli=1
+opcache.optimization_level=-1
+--SKIPIF--
+<?php require_once('skipif.inc'); ?>
+--FILE--
+<?php
+abstract class Broadcaster {
+    protected function normalizeChannelHandlerToCallable($callback)
+        {
+            return is_callable($callback) ? $callback : function (...$args) use ($callback) {
+                return Container::getInstance()
+                    ->make($callback)
+                ->join(...$args);
+        };
+    }
+}
+?>
+OK
+--EXPECT--
+OK
diff --git a/ext/opcache/tests/opt/block_pass_002.phpt b/ext/opcache/tests/opt/block_pass_002.phpt
new file mode 100644
index 0000000000..ef7bf479c5
--- /dev/null
+++ b/ext/opcache/tests/opt/block_pass_002.phpt
@@ -0,0 +1,19 @@
+--TEST--
+Block Pass 002: QM_ASSIGN and INIT_ARRAY
+--INI--
+opcache.enable=1
+opcache.enable_cli=1
+opcache.optimization_level=-1
+--SKIPIF--
+<?php require_once('skipif.inc'); ?>
+--FILE--
+<?php
+function foo($key, $value, array $attributes) {
+	return is_array($value)
+		? [$key, array_merge($value, $attributes)]
+		: [$value, $attributes];
+}
+?>
+OK
+--EXPECT--
+OK