Index: Python/pythonrun.c
===================================================================
--- Python/pythonrun.c	(révision 78770)
+++ Python/pythonrun.c	(copie de travail)
@@ -1546,6 +1546,8 @@
 	char *msg = NULL;
 	errtype = PyExc_SyntaxError;
 	switch (err->error) {
+	case E_ERROR:
+		return;
 	case E_SYNTAX:
 		errtype = PyExc_IndentationError;
 		if (err->expected == INDENT)
Index: Parser/tokenizer.c
===================================================================
--- Parser/tokenizer.c	(révision 78770)
+++ Parser/tokenizer.c	(copie de travail)
@@ -817,8 +817,12 @@
 	return -1;
 
 error_clear:
+	Py_DECREF(enc);
+	if (!PyErr_ExceptionMatches(PyExc_UnicodeDecodeError)) {
+		tok->done = E_ERROR;
+		return -1;
+	}
 	/* Fallback to iso-8859-1: for backward compatibility */
-	Py_DECREF(enc);
 	PyErr_Clear();
 	return 0;
 }