Mercurial > cpython-lru_cache-weakref

diff Objects/enumobject.c @ 40766:1ad0568737f6 legacy-trunk

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Do not let overflows in enumerate() and count() pass silently.
author Raymond Hettinger <python@rcn.com>
date Thu, 08 Feb 2007 00:07:32 +0000
parents 7b2e436a4a21
children 6620a510e9a9
line wrap: on
line diff
--- a/Objects/enumobject.c	Wed Feb 07 23:49:03 2007 +0000
+++ b/Objects/enumobject.c	Thu Feb 08 00:07:32 2007 +0000
@@ -62,6 +62,12 @@
 	PyObject *result = en->en_result;
 	PyObject *it = en->en_sit;
 
+	if (en->en_index == LONG_MAX) {
+		PyErr_SetString(PyExc_OverflowError,
+			"enumerate() is limited to LONG_MAX items");                
+		return NULL;         
+	}
+
 	next_item = (*it->ob_type->tp_iternext)(it);
 	if (next_item == NULL)
 		return NULL;