A scalar field is not initialized by the constructor

Defect 105006 (STATIC_C)
Checker UNINIT_CTOR (subcategory none)
File: /src/bsoncxx/private/stack.hh
Function bsoncxx::v_noabi::stack<bsoncxx::v_noabi::builder::core::impl::frame, (unsigned long)4>::stack()
/usr/include/c++/7/type_traits, line: 2046
Class member declaration for "__align".

    	struct __attribute__((__aligned__((_Align)))) { } __align;

/src/bsoncxx/private/stack.hh, line: 31
Non-static class member field "object_memory._align" is not initialized in this constructor nor in any functions that it calls.

        stack() : _bucket_index(0), _bucket_size(size), _is_empty(true) {}