Index: Parser/tokenizer.c
===================================================================
--- Parser/tokenizer.c	(revision 83725)
+++ Parser/tokenizer.c	(working copy)
@@ -580,6 +580,10 @@
             }
     }
     if (badchar) {
+        /* Sending a NULL argument to PyErr_Format causes
+           a segfault. */
+        if (tok->filename == NULL)
+            tok->filename = "<file>";
         /* Need to add 1 to the line number, since this line
            has not been counted, yet.  */
         PyErr_Format(PyExc_SyntaxError,
Index: Lib/test/test_imp.py
===================================================================
--- Lib/test/test_imp.py	(revision 83725)
+++ Lib/test/test_imp.py	(working copy)
@@ -62,6 +62,11 @@
         self.assertEqual(fp.readline(),
                          '"""Tokenization help for Python programs.\n')
         fp.close()
+    
+    def test_issue9319(self):
+        def _test():
+            fp, filename, info  = imp.find_module("badsyntax_pep3120")
+        self.assertRaises(SyntaxError, _test)
 
     def test_issue3594(self):
         temp_mod_name = 'test_imp_helper'