diff --git a/ext/opcache/tests/bug77691.phpt b/ext/opcache/tests/bug77691.phpt
new file mode 100644
index 00000000000..998a3487d16
--- /dev/null
+++ b/ext/opcache/tests/bug77691.phpt
@@ -0,0 +1,26 @@
+--TEST--
+Bug #77691: Opcache passes wrong value for inline array push assignments
+--FILE--
+<?php
+
+if (true) {
+    function dump($str) {
+        var_dump($str);
+    }
+}
+
+function test() {
+    $array = [];
+    dump($array[] = 'test');
+    dump($array);
+}
+
+test();
+
+?>
+--EXPECT--
+string(4) "test"
+array(1) {
+  [0]=>
+  string(4) "test"
+}