libbinder: allow devices to disable ashmem size tracking

The addition of ashmem size tracking can lead to parcel objects
overwriting other values on the stack in old binary blobs.

Change-Id: Ida52cec851a6f9d5a57c8f9130a5875c03dcb094

1 files changed, 2 insertions, 0 deletions

diff --git a/include/binder/Parcel.h b/include/binder/Parcel.h
index 3ada1e9..dc9757e 100644
--- a/include/binder/Parcel.h
+++ b/include/binder/Parcel.h
@@ -340,8 +340,10 @@ public:
         inline void* data() { return mData; }
     };
 
+#ifndef DISABLE_ASHMEM_TRACKING
 private:
     size_t mBlobAshmemSize;
+#endif
 
 public:
     size_t getBlobAshmemSize() const;