From 957cb13a4959ed6a802508f14317253bf06f82cd Mon Sep 17 00:00:00 2001
From: Dmitry Stogov <dmitry@zend.com>
Date: Mon, 1 Mar 2021 23:57:20 +0300
Subject: [PATCH] Fixed bug #80802: (zend_jit_fetch_indirect_var assert failure
 with tracing JIT)

---
 ext/opcache/tests/jit/bug80802.phpt | 49 +++++++++++++++++++++++++++++
 ext/spl/spl_array.c                 |  2 +-
 2 files changed, 50 insertions(+), 1 deletion(-)
 create mode 100644 ext/opcache/tests/jit/bug80802.phpt

diff --git a/ext/opcache/tests/jit/bug80802.phpt b/ext/opcache/tests/jit/bug80802.phpt
new file mode 100644
index 0000000000..89a116cc92
--- /dev/null
+++ b/ext/opcache/tests/jit/bug80802.phpt
@@ -0,0 +1,49 @@
+--TEST--
+Bug #80802: zend_jit_fetch_indirect_var assert failure with tracing JIT
+--INI--
+opcache.enable=1
+opcache.enable_cli=1
+opcache.jit_buffer_size=1M
+opcache.jit=tracing
+--SKIPIF--
+<?php require_once('skipif.inc'); ?>
+--FILE--
+<?php
+abstract class AsyncTask{
+        private static $threadLocalStorage = null;
+
+        protected function storeLocal(string $key, $complexData) : void{
+                if(self::$threadLocalStorage === null){
+                        self::$threadLocalStorage = new \ArrayObject();
+                }
+                self::$threadLocalStorage[spl_object_id($this)][$key] = $complexData;
+        }
+
+        final public function __destruct(){
+                $this->reallyDestruct();
+                if(self::$threadLocalStorage !== null and isset(self::$threadLocalStorage[$h = spl_object_id($this)])){
+                        unset(self::$threadLocalStorage[$h]);
+                        if(self::$threadLocalStorage->count() === 0){
+                                self::$threadLocalStorage = null;
+                        }
+                }
+        }
+
+        protected function reallyDestruct() : void{
+
+        }
+}
+
+class Task extends AsyncTask{
+        public function __construct(){
+                $this->storeLocal("thing1", new stdClass);
+        }
+}
+
+for($i = 0; $i < 10000; ++$i){
+        new Task;
+}
+echo "OK\n";
+?>
+--EXPECT--
+OK
diff --git a/ext/spl/spl_array.c b/ext/spl/spl_array.c
index 20a9d9e3da..76e9fbae2b 100644
--- a/ext/spl/spl_array.c
+++ b/ext/spl/spl_array.c
@@ -365,7 +365,7 @@ num_index:
 					zend_error(E_WARNING, "Undefined array key " ZEND_LONG_FMT, index);
 				case BP_VAR_W: {
 				    zval value;
-					ZVAL_UNDEF(&value);
+					ZVAL_NULL(&value);
 					retval = zend_hash_index_update(ht, index, &value);
 			   }
 			}
-- 
2.50.1