Index: Parser/tokenizer.c
===================================================================
--- Parser/tokenizer.c	(Revision 86692)
+++ Parser/tokenizer.c	(Arbeitskopie)
@@ -1706,6 +1706,7 @@
         fclose(fp);
         return NULL;
     }
+    tok->filename = "<unknown>";
     while (tok->lineno < 2 && tok->done == E_OK) {
         PyTokenizer_Get(tok, &p_start, &p_end);
     }
Index: Lib/test/test_imp.py
===================================================================
--- Lib/test/test_imp.py	(Revision 86692)
+++ Lib/test/test_imp.py	(Arbeitskopie)
@@ -170,6 +170,9 @@
                 support.unlink(init_file_name + ext)
             support.rmtree(test_package_name)
 
+    def test_bad_character(self):
+        self.assertRaises(SyntaxError, imp.find_module, "badsyntax_pep3120",
+                          [os.path.dirname(__file__)])
 
 class ReloadTests(unittest.TestCase):