From 92f21a95cfcff3266945435e6e3132b9d5809775 Mon Sep 17 00:00:00 2001
From: Eugen Wissner <belka@caraus.de>
Date: Mon, 26 Mar 2018 21:38:38 +0200
Subject: [PATCH] Add hashing pointers

---
 source/tanya/hash/lookup.d | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/source/tanya/hash/lookup.d b/source/tanya/hash/lookup.d
index 2ca5b66..b006239 100644
--- a/source/tanya/hash/lookup.d
+++ b/source/tanya/hash/lookup.d
@@ -38,7 +38,11 @@ private struct FNV
 
     void opCall(T)(auto ref T key)
     {
-        static if (isScalarType!T)
+        static if (is(typeof(key.toHash()) == size_t))
+        {
+            opCall(key.toHash()); // Combine user-defined hashes
+        }
+        else static if (isScalarType!T || isPointer!T)
         {
             (() @trusted => add((cast(const ubyte*) &key)[0 .. T.sizeof]))();
         }
@@ -50,10 +54,6 @@ private struct FNV
         {
             add(key);
         }
-        else static if (is(typeof(key.toHash()) == size_t))
-        {
-            opCall(key.toHash()); // Combine user-defined hashes
-        }
         else static if (isInputRange!T && !isInfinite!T)
         {
             foreach (e; key)
@@ -186,7 +186,6 @@ static if (size_t.sizeof == 4) @nogc nothrow pure @safe unittest
     assert(hash(HashRange()) == 0x6222e842U);
     assert(hash(ToHashRange()) == 1268118805U);
 }
-
 static if (size_t.sizeof == 8) @nogc nothrow pure @safe unittest
 {
     assert(hash('a') == 0xaf63dc4c8601ec8cUL);
@@ -194,6 +193,15 @@ static if (size_t.sizeof == 8) @nogc nothrow pure @safe unittest
     assert(hash(ToHashRange()) == 12161962213042174405UL);
 }
 
+static if (size_t.sizeof == 4) @nogc nothrow pure @system unittest
+{
+    assert(hash(cast(void*) 0x6e6f6863) == 0xac297727U);
+}
+static if (size_t.sizeof == 8) @nogc nothrow pure @system unittest
+{
+    assert(hash(cast(void*) 0x77206f676e6f6863) == 0xd1edd10b507344d0UL);
+}
+
 /*
  * These are official FNV-1a test vectors and they are in the public domain.
  */