--- a/sql/recover_module/cursor.h

+++ b/sql/recover_module/cursor.h

@@ -62,10 +62,12 @@

   // |sqlite_cursor| must have been returned by VirtualTable::SqliteCursor().

   static inline VirtualCursor* FromSqliteCursor(

       sqlite3_vtab_cursor* sqlite_cursor) {

+#ifndef NDEBUG

     static_assert(std::is_standard_layout<VirtualCursor>::value,

                   "needed for the reinterpret_cast below");

     static_assert(offsetof(VirtualCursor, sqlite_cursor_) == 0,

                   "sqlite_cursor_ must be the first member of the class");

+#endif

     VirtualCursor* result = reinterpret_cast<VirtualCursor*>(sqlite_cursor);

     DCHECK_EQ(sqlite_cursor, &result->sqlite_cursor_);

     return result;

​