From bd9ccca81206cb4efc78ece65e079e729932de7f Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Thu, 9 Apr 1992 14:58:08 +0000
Subject: Test for NULL coming out of err_get() in call_exc_trace()

---
 Python/ceval.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Python/ceval.c b/Python/ceval.c
index ea1a785..0b2f924 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -1189,6 +1189,10 @@ call_exc_trace(p_trace, p_newtrace, f)
 	object *type, *value, *traceback, *arg;
 	int err;
 	err_get(&type, &value);
+	if (value == NULL) {
+		value = None;
+		INCREF(value);
+	}
 	traceback = tb_fetch();
 	arg = newtupleobject(3);
 	if (arg == NULL)
-- 
cgit v0.12