1 files changed, 2 insertions, 3 deletions
diff --git a/lib/scudo/scudo_allocator.h b/lib/scudo/scudo_allocator.h
index a517058ab..a561247de 100644
--- a/lib/scudo/scudo_allocator.h
+++ b/lib/scudo/scudo_allocator.h
@@ -39,16 +39,15 @@ enum ChunkState : u8 {
 typedef u64 PackedHeader;
 struct UnpackedHeader {
   u64 Checksum          : 16;
-  u64 SizeOrUnusedBytes : 19;  // Size for Primary backed allocations, amount of
+  u64 ClassId           : 8;
+  u64 SizeOrUnusedBytes : 20;  // Size for Primary backed allocations, amount of
                                // unused bytes in the chunk for Secondary ones.
-  u64 FromPrimary       : 1;
   u64 State             : 2;   // available, allocated, or quarantined
   u64 AllocType         : 2;   // malloc, new, new[], or memalign
   u64 Offset            : 16;  // Offset from the beginning of the backend
                                // allocation to the beginning of the chunk
                                // itself, in multiples of MinAlignment. See
                                // comment about its maximum value and in init().
-  u64 Salt              : 8;
 };
 
 typedef atomic_uint64_t AtomicPackedHeader;