Make syzyasan_rtl compile in 64 bit

syzygy/agent/asan/block.h

 // Copyright 2014 Google Inc. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 190 matching lines @@
   uint32_t alloc_tid;
   uint32_t free_tid;
   // The time at which the block was allocated. Combined with the address of
   // the block itself this acts as a (unique with high probability) serial
   // number for the block (especially if the heap is lazy to reuse
   // allocations).
   uint32_t alloc_ticks;
   // The time at which the block was freed (zero if not yet freed).
   uint32_t free_ticks;
   // The ID of the heap that allocated the block.
-  uint32_t heap_id;
+  size_t heap_id;
+#ifdef _WIN64
+  // Add some padding so the trailer size will be a multiple of size
+  // (n + 1/2) * kShadowRatio.
+  // TODO(sebmarchand): Use this bytes to store more information.
+  uint32_t padding_;
+#endif
 };
 #pragma pack(pop)
 static_assert((sizeof(BlockTrailer) % kShadowRatio) == (kShadowRatio / 2),
               "Invalid BlockTrailer mod size.");
+#ifndef _WIN64
 static_assert(sizeof(BlockTrailer) == 20, "Invalid BlockTrailer size.");
+#else
+static_assert(sizeof(BlockTrailer) == 28, "Invalid BlockTrailer size.");
+#endif
 
 // A structure for recording the minimum pertinent information about a block.
 // Can easily be expanded into a BlockInfo, but requires less space. This makes
 // it suitable for storing blocks in a quarantine, for example.
 // NOTE: If you want to navigate a block thoroughly and conveniently it is best
 //       to first upgrade a CompactBlockInfo to a full BlockInfo struct.
 struct CompactBlockInfo {
   // Pointer to the beginning of the allocation.
   BlockHeader* header;
   // The size of the entire allocation. It's supposed to fit into 30 bits.
@@ skipping 287 matching lines @@
 typedef base::Callback<void(EXCEPTION_POINTERS*)> OnExceptionCallback;
 void SetOnExceptionCallback(OnExceptionCallback callback);
 void ClearOnExceptionCallback();
 
 }  // namespace asan
 }  // namespace agent
 
 #include "syzygy/agent/asan/block_impl.h"
 
 #endif  // SYZYGY_AGENT_ASAN_BLOCK_H_