From: Mark Wooding <mdw@distorted.org.uk>
Date: Sun, 10 Nov 2019 13:23:49 +0000 (+0000)
Subject: mp.c: Fix crash converting elliptic curve point-at-infinity to integer.
X-Git-Url: https://git.distorted.org.uk/~mdw/catacomb-python/commitdiff_plain/46c13d7718d244f8ac59fbfc1c826d4d12ef4a39

mp.c: Fix crash converting elliptic curve point-at-infinity to integer.
---

diff --git a/mp.c b/mp.c
index e9268e5..7c9146c 100644
--- a/mp.c
+++ b/mp.c
@@ -211,6 +211,7 @@ mp *tomp(PyObject *o)
     return (MP_COPY(PFILT_F(o)->m));
   else if (ECPT_PYCHECK(o)) {
     ec p = EC_INIT;
+    if (EC_ATINF(ECPT_P(o))) return (0);
     getecptout(&p, o);
     x = MP_COPY(p.x);
     EC_DESTROY(&p);