diff --git a/test/bootstrap-aot/stdlib_stream.php b/test/bootstrap-aot/stdlib_stream.php
index afa098a9..608fcf4f 100644
--- a/test/bootstrap-aot/stdlib_stream.php
+++ b/test/bootstrap-aot/stdlib_stream.php
@@ -3,13 +3,18 @@
 declare(strict_types=1);
 
 /**
- * Bootstrap AOT: fopen/fread/fclose stream I/O (issue #1117, self-host stdlib wave).
+ * Bootstrap AOT: fopen/fread/fclose stream I/O (issue #1117, #1152).
+ *
+ * Uses a repo-local fixture path (not sys_get_temp_dir()/getmypid()) so VM and AOT agree.
  */
 
-$path = sys_get_temp_dir().'/phpc_stdlib_stream_'.(string) getmypid().'.txt';
+$dir = 'test/bootstrap-aot/stdlib_stream_fixture';
+@mkdir($dir);
+$path = $dir.'/sample.txt';
 file_put_contents($path, 'stream');
 $h = fopen($path, 'r');
 $data = fread($h, 6);
 fclose($h);
 @unlink($path);
+@rmdir($dir);
 echo is_string($data) && $data === 'stream' ? '1' : '0';