Fix AuditMode errors

Author: lhecker

src/inc/til/hash.h

@@ -3,6 +3,16 @@
 
 #pragma once
 
+#pragma warning(push)
+// std::hash() doesn't test for `nullptr`, nor do we want to.
+#pragma warning(disable: 26429) // Symbol '...' is never tested for nullness, it can be marked as not_null (f.23).
+// Misdiagnosis: static_cast<const void*> is used to differentiate between 2 overloads of til::hasher::write.
+#pragma warning(disable: 26474) // Don't cast between pointer types when the conversion could be implicit (type.1).
+// We don't want to unnecessarily modify wyhash from its original.
+#pragma warning(disable: 26481) // Don't use pointer arithmetic. Use span instead (bounds.1).
+#pragma warning(disable: 26494) // Variable '...' is uninitialized. Always initialize an object (type.5).
+#pragma warning(disable: 26496) // The variable '...' does not change after construction, mark it as const (con.4).
+
 #if defined(_M_X64) && !defined(_M_ARM64EC)
 #define TIL_HASH_X64
 #elif defined(_M_ARM64) || defined(_M_ARM64EC)
@@ -229,7 +239,7 @@ namespace til
         void operator()(hasher& h, float v) const noexcept
         {
             v = v == 0.0f ? 0.0f : v; // map -0 to 0
-            h.write(static_cast<const void*>(&v), sizeof v);
+            h.write(static_cast<const void*>(&v), sizeof(v));
         }
     };
 
@@ -276,3 +286,5 @@ namespace til
         return h.finalize();
     }
 }
+
+#pragma warning(pop)