Need a cast when comparing type object in isinstance()

6b74621a · Guido van Rossum · e66dc3e7 · 6b74621a
Commit 6b74621a authored Dec 10, 1997 by Guido van Rossum
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Python/bltinmodule.c Python/bltinmodule.c +1 -1

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--- a/Python/bltinmodule.c
+++ b/Python/bltinmodule.c
@@ -1628,7 +1628,7 @@ builtin_isinstance(self, args)
 	if (!PyArg_ParseTuple(args, "OO", &inst, &cls))
 		return NULL;
 	if (PyType_Check(cls)) {
-		retval = (inst->ob_type == cls);
+		retval = ((PyObject *)(inst->ob_type) == cls);
 	}
 	else {
 		if (!PyClass_Check(cls)) {