From 285d82ff2c0ae5f616527ec12a471cbda13fa9d7 Mon Sep 17 00:00:00 2001
From: Reini Urban <reini.urban@gmail.com>
Date: Thu, 12 Dec 2024 08:22:20 +0100
Subject: [PATCH] halftime_hash broke with MSVC

---
 Hashes.cpp |  4 ++++
 Hashes.h   |  2 ++
 main.cpp   | 21 ++++++++++++++-------
 3 files changed, 20 insertions(+), 7 deletions(-)

diff --git a/Hashes.cpp b/Hashes.cpp
index f02bbb53..b9aac7e2 100644
--- a/Hashes.cpp
+++ b/Hashes.cpp
@@ -836,6 +836,8 @@ void clhash_seed_init(size_t &seed)
 
 #endif
 
+#ifndef _MSC_VER
+// FIXME stopped working on MSVC
 #include "halftime-hash.hpp"
 
 alignas(64) static uint64_t
@@ -962,6 +964,8 @@ void halftime_hash_seed_init(size_t &seed)
 }
 #endif
 
+#endif // !_MSC_VER
+
 
 // Multiply shift from
 // Thorup "High Speed Hashing for Integers and Strings" 2018
diff --git a/Hashes.h b/Hashes.h
index 5c5fda63..d3617db4 100644
--- a/Hashes.h
+++ b/Hashes.h
@@ -563,6 +563,7 @@ void clhash_seed_init(size_t &seed);
 void clhash_test (const void * key, int len, uint32_t seed, void * out);
 #endif
 
+#ifndef _MSC_VER
 // objsize 454880-4554f3: 2911
 void halftime_hash_style64_test(const void *key, int len, uint32_t seed, void *out);
 // 455e90 - 45682e: 2462
@@ -573,6 +574,7 @@ void halftime_hash_style256_test(const void *key, int len, uint32_t seed, void *
 void halftime_hash_style512_test(const void *key, int len, uint32_t seed, void *out);
 void halftime_hash_init();
 void halftime_hash_seed_init(size_t &seed);
+#endif
 
 #ifdef __SIZEOF_INT128__
    void multiply_shift_init();
diff --git a/main.cpp b/main.cpp
index 65401c80..8cb88edc 100644
--- a/main.cpp
+++ b/main.cpp
@@ -698,6 +698,7 @@ HashInfo g_hashes[] =
 { umash,                64, 0x161495C6, "umash64",     "umash 64", GOOD, {} },
 { umash128,            128, 0x36D4EC95, "umash128",    "umash 128", GOOD, {} },
 #endif
+#ifndef _MSC_VER
 { halftime_hash_style64_test,  64, 0x0, "halftime_hash64",    "NH tree hash variant", GOOD,
   {0xc61d672b, 0xcc70c4c1798e4a6f, 0xd3833e804f4c574b, 0xecfc1357d65941ae, 0xbe1927f97b8c43f1, 
    0xf4d4beb14ae042bbULL, 0x9a9b4c4e44dd48d1ULL} }, // not vulnerable
@@ -710,7 +711,7 @@ HashInfo g_hashes[] =
 { halftime_hash_style512_test, 64, 0x0, "halftime_hash512",   "NH tree hash variant", GOOD,
   {0xc61d672b, 0xcc70c4c1798e4a6f, 0xd3833e804f4c574b, 0xecfc1357d65941ae, 0xbe1927f97b8c43f1, 
    0xf4d4beb14ae042bbULL, 0x9a9b4c4e44dd48d1ULL} },
-
+#endif
 { t1ha2_atonce_test,           64, 0x8F16C948, "t1ha2_atonce",    "Fast Positive Hash (portable", GOOD, {
   } },
 { t1ha2_stream_test,           64, 0xDED9B580, "t1ha2_stream",    "Fast Positive Hash (portable)", POOR, {} },
@@ -827,11 +828,13 @@ void Hash_init (HashInfo* info) {
 #endif
   else if(info->hash == chaskey_test)
     chaskey_init();
+#ifndef _MSC_VER
   else if (info->hash == halftime_hash_style64_test ||
            info->hash == halftime_hash_style128_test ||
            info->hash == halftime_hash_style256_test ||
            info->hash == halftime_hash_style512_test)
     halftime_hash_init();
+#endif
 }
 
 // optional hash seed initializers.
@@ -920,9 +923,11 @@ bool Hash_Seed_init (pfHash hash, size_t seed) {
 #if defined(HAVE_SSE42) && defined(__x86_64__)
   else if (hash == clhash_test)
     clhash_seed_init(seed);
+#ifndef _MSC_VER
   else if (hash == halftime_hash_style64_test || hash == halftime_hash_style128_test ||
            hash == halftime_hash_style256_test || hash == halftime_hash_style512_test)
     halftime_hash_seed_init(seed);
+#endif
   /*
   else if(hash == hashx_test)
     hashx_seed_init(info, seed);
@@ -1749,12 +1754,14 @@ void test ( hashfunc<hashtype> hash, HashInfo* info )
     bool result = true;
     bool dumpCollisions = g_drawDiagram; // from --verbose
     int reps = 1000;
-    if ((g_speed > 500.0 || info->hashbits > 128 ||
-         hash == o1hash_test ||
-         hash == halftime_hash_style64_test ||
-         hash == halftime_hash_style128_test ||
-         hash == halftime_hash_style256_test ||
-         hash == halftime_hash_style512_test
+    if ((g_speed > 500.0 || info->hashbits > 128
+         || hash == o1hash_test
+#ifndef _MSC_VER
+         || hash == halftime_hash_style64_test
+         || hash == halftime_hash_style128_test
+         || hash == halftime_hash_style256_test
+         || hash == halftime_hash_style512_test
+#endif
          ) && !g_testExtra)
       reps = 100; // sha1: 7m, md5: 4m53