From d68b8b189c2671c261d0e49b02eaf2b86b5947fa Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Fri, 7 Feb 2020 15:46:59 +0100
Subject: [PATCH] curve25519: squelch warnings on clang

These are generic helper functions we don't want to move into the actual
implementations, so that it's easy to keep parity with the kernel code.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---
 src/curve25519.c | 38 +++++++++++++++++++++-----------------
 1 file changed, 21 insertions(+), 17 deletions(-)

diff --git a/src/curve25519.c b/src/curve25519.c
index 7d3fd15..1739a9e 100644
--- a/src/curve25519.c
+++ b/src/curve25519.c
@@ -39,23 +39,9 @@ typedef int64_t s64;
 #define le32_to_cpup(a) (*(a))
 #define cpu_to_le64(a) (a)
 #endif
-static inline __le32 get_unaligned_le32(const u8 *a)
-{
-	__le32 l;
-	__builtin_memcpy(&l, a, sizeof(l));
-	return le32_to_cpup(&l);
-}
-static inline __le64 get_unaligned_le64(const u8 *a)
-{
-	__le64 l;
-	__builtin_memcpy(&l, a, sizeof(l));
-	return le64_to_cpup(&l);
-}
-static inline void put_unaligned_le64(u64 s, u8 *d)
-{
-	__le64 l = cpu_to_le64(s);
-	__builtin_memcpy(d, &l, sizeof(l));
-}
+#ifndef __unused
+#define __unused  __attribute__((unused))
+#endif
 #ifndef __always_inline
 #define __always_inline __inline __attribute__((__always_inline__))
 #endif
@@ -69,6 +55,24 @@ static inline void put_unaligned_le64(u64 s, u8 *d)
 #define __force
 #endif
 
+static __always_inline __unused __le32 get_unaligned_le32(const u8 *a)
+{
+	__le32 l;
+	__builtin_memcpy(&l, a, sizeof(l));
+	return le32_to_cpup(&l);
+}
+static __always_inline __unused __le64 get_unaligned_le64(const u8 *a)
+{
+	__le64 l;
+	__builtin_memcpy(&l, a, sizeof(l));
+	return le64_to_cpup(&l);
+}
+static __always_inline __unused void put_unaligned_le64(u64 s, u8 *d)
+{
+	__le64 l = cpu_to_le64(s);
+	__builtin_memcpy(d, &l, sizeof(l));
+}
+
 static noinline void memzero_explicit(void *s, size_t count)
 {
 	memset(s, 0, count);