From: Mark Wooding <mdw@distorted.org.uk>
Date: Sat, 16 Nov 2019 22:42:32 +0000 (+0000)
Subject: ec.c: Pass a dummy length argument to `PyObject_AsReadBuffer'.
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/catacomb-python/commitdiff_plain/ba03351306bcd298ca10572f40bef9ab6c1b9050?ds=inline

ec.c: Pass a dummy length argument to `PyObject_AsReadBuffer'.

Otherwise it just raises a `SystemException'.  So this code never
worked.
---

diff --git a/ec.c b/ec.c
index e18cbb8..30dc50c 100644
--- a/ec.c
+++ b/ec.c
@@ -453,7 +453,7 @@ static int ecptxl_1(ec_curve *c, ec *p, PyObject *x)
     getecptout(p, x);
     goto fix;
   } else if (PyString_Check(x)) {
-    if (PyObject_AsReadBuffer(x, &q, 0))
+    if (PyObject_AsReadBuffer(x, &q, &n))
       goto end;
     qd.p = q;
     qd.e = 0;