--- /dev/null
+--TEST--
+validate types
+--SKIPIF--
+<?php
+extension_loaded("psi") or die("skip - need ext/psi");
+?>
+--FILE--
+===TEST===
+<?php
+psi_validate_string("struct a; \ntypedef struct a a_t;");
+?>
+===DONE===
+--EXPECTF--
+===TEST===
+
+Warning: Cannot compute size of empty struct 'a' in %s on line 1
+===DONE===