From fc9fe8f17c79f29110bc8b63d47403681ad7764d Mon Sep 17 00:00:00 2001
From: Sebastian Pipping <sebastian@pipping.org>
Date: Sun, 3 Dec 2017 17:26:44 +0100
Subject: [PATCH] Address warning about sip_tobin by Visual Studio

Message was:
Warning: C4551 function call missing argument
---
 expat/lib/siphash.h    | 7 +++++++
 expat/lib/xmlparse.c   | 1 -
 expat/tests/runtests.c | 1 -
 3 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/expat/lib/siphash.h b/expat/lib/siphash.h
index 581872df..00ead6e0 100644
--- a/expat/lib/siphash.h
+++ b/expat/lib/siphash.h
@@ -11,6 +11,9 @@
  * --------------------------------------------------------------------------
  * HISTORY:
  *
+ * 2017-11-03  (Sebastian Pipping)
+ *   - Hide sip_tobin and sip_binof unless SIPHASH_TOBIN macro is defined
+ *
  * 2017-07-25  (Vadim Zeitlin)
  *   - Fix use of SIPHASH_MAIN macro
  *
@@ -151,6 +154,8 @@ static struct sipkey *sip_tokey(struct sipkey *key, const void *src) {
 } /* sip_tokey() */
 
 
+#ifdef SIPHASH_TOBIN
+
 #define sip_binof(v) sip_tobin((unsigned char[8]){ 0 }, (v))
 
 static void *sip_tobin(void *dst, uint64_t u64) {
@@ -158,6 +163,8 @@ static void *sip_tobin(void *dst, uint64_t u64) {
 	return dst;
 } /* sip_tobin() */
 
+#endif  /* SIPHASH_TOBIN */
+
 
 static void sip_round(struct siphash *H, const int rounds) {
 	int i;
diff --git a/expat/lib/xmlparse.c b/expat/lib/xmlparse.c
index 90a237f3..0efd2bdd 100644
--- a/expat/lib/xmlparse.c
+++ b/expat/lib/xmlparse.c
@@ -6643,7 +6643,6 @@ hash(XML_Parser parser, KEY s)
 {
   struct siphash state;
   struct sipkey key;
-  (void)sip_tobin;
   (void)sip24_valid;
   copy_salt_to_sipkey(parser, &key);
   sip24_init(&state, &key);
diff --git a/expat/tests/runtests.c b/expat/tests/runtests.c
index d81d70f3..b39b44b3 100644
--- a/expat/tests/runtests.c
+++ b/expat/tests/runtests.c
@@ -491,7 +491,6 @@ START_TEST(test_siphash_spec)
     const uint64_t expected = _SIP_ULL(0xa129ca61U, 0x49be45e5U);
     struct siphash state;
     struct sipkey key;
-    (void)sip_tobin;
 
     sip_tokey(&key,
             "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09"
-- 
2.40.0