From 7b4145adb20fa43307b0eb9f5bca397a2d916e63 Mon Sep 17 00:00:00 2001
From: Loup Vaillant <loup@loup-vaillant.fr>
Date: Mon, 29 Jan 2018 00:36:24 +0100
Subject: [PATCH] Fixed small undefined behaviour in tests

Apparently we cannot memcmp() null pointers, even when the size is zero.
---
 tests/test.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tests/test.c b/tests/test.c
index c140109..9830591 100644
--- a/tests/test.c
+++ b/tests/test.c
@@ -64,7 +64,9 @@ static int test(void (*f)(const vector[], vector*),
         expected.buf  = vectors[idx+nb_inputs];
         expected.size = sizes  [idx+nb_inputs];
         status |= out.size - expected.size;
-        status |= memcmp(out.buf, expected.buf, out.size);
+        if (out.size != 0) {
+            status |= memcmp(out.buf, expected.buf, out.size);
+        }
         free(out.buf);
         idx += nb_inputs + 1;
         nb_tests++;
-- 
2.47.3