diff --git a/tests/lang/bison1.phpt b/tests/lang/bison1.phpt
new file mode 100644
index 00000000000..3571576fb83
--- /dev/null
+++ b/tests/lang/bison1.phpt
@@ -0,0 +1,9 @@
+--TEST--
+Bison weirdness
+--FILE--
+<?php
+error_reporting(E_ALL & ~E_NOTICE);
+echo "blah-$foo\n";
+?>
+--EXPECT--
+blah-