From 2f8ce947868ee21f882fdaf85930d86eaaaa6a02 Mon Sep 17 00:00:00 2001
From: Florian Engelhardt <florian.engelhardt@datadoghq.com>
Date: Fri, 22 May 2026 13:39:34 +0200
Subject: [PATCH] ASAN test for #3898

---
 .../tests/phpt/preload_ini_zts_asan.phpt      | 34 +++++++++++++++++++
 .../phpt/preload_ini_zts_asan_preload.php     |  3 ++
 2 files changed, 37 insertions(+)
 create mode 100644 profiling/tests/phpt/preload_ini_zts_asan.phpt
 create mode 100644 profiling/tests/phpt/preload_ini_zts_asan_preload.php

diff --git a/profiling/tests/phpt/preload_ini_zts_asan.phpt b/profiling/tests/phpt/preload_ini_zts_asan.phpt
new file mode 100644
index 00000000000..a2aba966a13
--- /dev/null
+++ b/profiling/tests/phpt/preload_ini_zts_asan.phpt
@@ -0,0 +1,34 @@
+--TEST--
+[profiling] ASAN regression: ZTS preloading must not duplicate INI values from themselves
+--DESCRIPTION--
+During preloading in ZTS builds, EG(ini_directives) is still the global INI
+table. The ZTS INI synchronization step must be skipped in that state. If it is
+not skipped, it releases zend_ini_entry.value and then duplicates the same
+pointer, which ASAN reports as a use-after-free.
+--ENV--
+USE_ZEND_ALLOC=0
+DD_PROFILING_ENABLED=0
+DD_PROFILING_LOG_LEVEL=error
+--SKIPIF--
+<?php
+if (!getenv('SKIP_ASAN'))
+    echo "skip: test requires ASAN run-tests mode\n";
+if (!PHP_ZTS)
+    echo "skip: test requires PHP ZTS\n";
+if (PHP_VERSION_ID < 70400)
+    echo "skip: need preloading and therefore PHP >= 7.4.0\n";
+if (!extension_loaded('datadog-profiling'))
+    echo "skip: test requires datadog-profiling\n";
+if (!extension_loaded('Zend OPcache'))
+    echo "skip: test requires opcache\n";
+?>
+--INI--
+opcache.enable_cli=1
+opcache.preload={PWD}/preload_ini_zts_asan_preload.php
+opcache.preload_user=root
+--FILE--
+<?php
+echo "main ini ok: ", ini_get('datadog.profiling.log_level') === 'error' ? 'yes' : 'no', PHP_EOL;
+?>
+--EXPECTREGEX--
+^(?:\[TRACE datadog_php_profiling\] MINIT\([0-9]+, [0-9]+\)\n)*preload ini ok: yes\nmain ini ok: yes\n?$
diff --git a/profiling/tests/phpt/preload_ini_zts_asan_preload.php b/profiling/tests/phpt/preload_ini_zts_asan_preload.php
new file mode 100644
index 00000000000..2f113ad60c1
--- /dev/null
+++ b/profiling/tests/phpt/preload_ini_zts_asan_preload.php
@@ -0,0 +1,3 @@
+<?php
+
+echo "preload ini ok: ", ini_get('datadog.profiling.log_level') === 'error' ? 'yes' : 'no', PHP_EOL;