Test for NULL coming out of err_get() in call_exc_trace()

diff --git a/Python/ceval.c b/Python/ceval.c
index ea1a78590b7ca7fd89df4951e8a4416d70fefee4..0b2f924a84d7d3bfd13dd2775391ebee2f624233 100644 (file)
--- 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)