From e3e61c1642d3bfc5a514dc96aba36ad9b89406a9 Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Fri, 4 Aug 1995 04:14:47 +0000
Subject: empty kw dict is ok for builtins

---
 Python/ceval.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Python/ceval.c b/Python/ceval.c
index a0431aa..d725d35 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -2281,6 +2281,11 @@ PyEval_CallObjectWithKeywords(func, arg, kw)
 	else
 		INCREF(arg);
 
+	if (kw != NULL && !is_dictobject(kw)) {
+		err_setstr(TypeError, "keyword list must be a dictionary");
+		return NULL;
+	}
+
         if (call = func->ob_type->tp_call)
                 result = (*call)(func, arg, kw);
         else if (is_instancemethodobject(func) || is_funcobject(func))
@@ -2316,7 +2321,7 @@ call_builtin(func, arg, kw)
 		}
 		if (flags & METH_KEYWORDS)
 			return (*(PyCFunctionWithKeywords)meth)(self, arg, kw);
-		if (kw != NULL) {
+		if (kw != NULL && getmappingsize(kw) != 0) {
 			err_setstr(TypeError,
 				   "this function takes no keyword arguments");
 			return NULL;
-- 
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