Correctly pointer-align code cache payload.

src/serialize.h

Index: src/serialize.h
diff --git a/src/serialize.h b/src/serialize.h
index 264bd46f460015a392047afaeb9a478bcf0054a7..30eb364892ce0728e06245f69aa276108b9b7082 100644
--- a/src/serialize.h
+++ b/src/serialize.h
@@ -912,14 +912,16 @@ class SnapshotData : public SerializedData {
 
  private:
   bool IsSane();
-  // The data header consists of int-sized entries:
+  // The data header consists of uint32_t-sized entries:
   // [0] version hash
   // [1] number of reservation size entries
   // [2] payload length
+  // ... reservations
+  // ... serialized payload
   static const int kCheckSumOffset = 0;
   static const int kReservationsOffset = 1;
   static const int kPayloadLengthOffset = 2;
-  static const int kHeaderSize = (kPayloadLengthOffset + 1) * kIntSize;
+  static const int kHeaderSize = (kPayloadLengthOffset + 1) * sizeof(uint32_t);

[jochen (gone - plz use gerrit), 2015/02/10 09:00:22]

if it's supposed to be pointer aligned, why not sizeof(void*)?

 };
 
 
@@ -957,7 +959,7 @@ class SerializedCodeData : public SerializedData {
 
   uint32_t SourceHash(String* source) const { return source->length(); }
 
-  // The data header consists of int-sized entries:
+  // The data header consists of uint32_t-sized entries:
   // [0] version hash
   // [1] source hash
   // [2] cpu features
@@ -966,6 +968,11 @@ class SerializedCodeData : public SerializedData {
   // [5] number of code stub keys
   // [6] number of reservation size entries
   // [7] payload length
+  // [8] payload checksum part 1
+  // [9] payload checksum part 2
+  // ... reservations
+  // ... code stub keys
+  // ... serialized payload
   static const int kVersionHashOffset = 0;
   static const int kSourceHashOffset = 1;
   static const int kCpuFeaturesOffset = 2;
@@ -976,8 +983,7 @@ class SerializedCodeData : public SerializedData {
   static const int kPayloadLengthOffset = 7;
   static const int kChecksum1Offset = 8;
   static const int kChecksum2Offset = 9;
-  static const int kHeaderSize =
-      POINTER_SIZE_ALIGN((kChecksum2Offset + 1) * kIntSize);
+  static const int kHeaderSize = (kChecksum2Offset + 1) * sizeof(uint32_t);
 };
 } }  // namespace v8::internal