From e4c2e4cb69224051fda663e52e48c00b2ca8f60f Mon Sep 17 00:00:00 2001
From: Bernd Edlinger <bernd.edlinger@hotmail.de>
Date: Mon, 2 Oct 2017 17:24:17 +0200
Subject: [PATCH] Fix the return type of felem_is_zero_int which should be int.
 Change argument type of xxxelem_is_zero_int to const void* to avoid the need
 of type casts.

Fixes #4413

Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4450)

(cherry picked from commit c55b786a8911cef41f890735ba5fde79e116e055)
---
 crypto/ec/ecp_nistp224.c | 3 +--
 crypto/ec/ecp_nistp256.c | 3 +--
 crypto/ec/ecp_nistp521.c | 3 +--
 3 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/crypto/ec/ecp_nistp224.c b/crypto/ec/ecp_nistp224.c
index d81cc9ce6b..fcd754e448 100644
--- a/crypto/ec/ecp_nistp224.c
+++ b/crypto/ec/ecp_nistp224.c
@@ -716,7 +716,7 @@ static limb felem_is_zero(const felem in)
     return (zero | two224m96p1 | two225m97p2);
 }
 
-static limb felem_is_zero_int(const felem in)
+static int felem_is_zero_int(const void *in)
 {
     return (int)(felem_is_zero(in) & ((limb) 1));
 }
@@ -1391,7 +1391,6 @@ static void make_points_affine(size_t num, felem points[ /* num */ ][3],
                                              sizeof(felem),
                                              tmp_felems,
                                              (void (*)(void *))felem_one,
-                                             (int (*)(const void *))
                                              felem_is_zero_int,
                                              (void (*)(void *, const void *))
                                              felem_assign,
diff --git a/crypto/ec/ecp_nistp256.c b/crypto/ec/ecp_nistp256.c
index 78d191aac7..1272966fff 100644
--- a/crypto/ec/ecp_nistp256.c
+++ b/crypto/ec/ecp_nistp256.c
@@ -977,7 +977,7 @@ static limb smallfelem_is_zero(const smallfelem small)
     return result;
 }
 
-static int smallfelem_is_zero_int(const smallfelem small)
+static int smallfelem_is_zero_int(const void *small)
 {
     return (int)(smallfelem_is_zero(small) & ((limb) 1));
 }
@@ -1979,7 +1979,6 @@ static void make_points_affine(size_t num, smallfelem points[][3],
                                              sizeof(smallfelem),
                                              tmp_smallfelems,
                                              (void (*)(void *))smallfelem_one,
-                                             (int (*)(const void *))
                                              smallfelem_is_zero_int,
                                              (void (*)(void *, const void *))
                                              smallfelem_assign,
diff --git a/crypto/ec/ecp_nistp521.c b/crypto/ec/ecp_nistp521.c
index c53a61bbfb..a1dc9946fd 100644
--- a/crypto/ec/ecp_nistp521.c
+++ b/crypto/ec/ecp_nistp521.c
@@ -871,7 +871,7 @@ static limb felem_is_zero(const felem in)
     return is_zero;
 }
 
-static int felem_is_zero_int(const felem in)
+static int felem_is_zero_int(const void *in)
 {
     return (int)(felem_is_zero(in) & ((limb) 1));
 }
@@ -1787,7 +1787,6 @@ static void make_points_affine(size_t num, felem points[][3],
                                              sizeof(felem),
                                              tmp_felems,
                                              (void (*)(void *))felem_one,
-                                             (int (*)(const void *))
                                              felem_is_zero_int,
                                              (void (*)(void *, const void *))
                                              felem_assign,
-- 
2.25.1