In classLoader.hpp we have:

class ClassPathEntry : public CHeapObj<mtClass> {
...
  ClassPathEntry* next() const { return OrderAccess::load_acquire(&_next); }
...
  void set_next(ClassPathEntry* next) {
    OrderAccess::release_store(&_next, next);
  }

these are inline functions which in turn use inline functions of OrderAccess. However, classLoader.hpp only includes orderAccess.hpp while the definitions of the used functions are in orderAccess.inline.hpp. This is incorrect and may be causing problems with the latest VS2017 compiler:

http://mail.openjdk.java.net/pipermail/hotspot-dev/2017-November/029037.html
http://mail.openjdk.java.net/pipermail/hotspot-dev/2017-November/029043.html

However we can't include the .inline.hpp file in a .hpp file. Some refactoring needs to done if we are to preserve the inline definitions of these methods.