Pack PackedSyncPtr

Summary: The comment was right about the packed attribute not liking private members, so pack `PackedSyncPtr` to get GCC to pack structs containing it correctly.

Reviewed By: yfeldblum

Differential Revision: D3402936

fbshipit-source-id: 11d9def132d5dedf04b0e263c379cac339a52fa3

diff --git a/folly/PackedSyncPtr.h b/folly/PackedSyncPtr.h
index 00dc1e22419d38e975b37677bc2667547c218294..3db7ff1696a70eab40a62997ec9af8f63e30ea5b 100644 (file)
--- a/folly/PackedSyncPtr.h
+++ b/folly/PackedSyncPtr.h
@@ -135,7 +135,7 @@ public:
 
  private:
   PicoSpinLock<uintptr_t> data_;
-};
+} FOLLY_PACK_ATTR;
 
 static_assert(
     std::is_pod<PackedSyncPtr<void>>::value,