Recent integration of https://github.com/openjdk/jdk/commit/aec1fe0a17fa6801e26a517d4d21656353409f7c introduced an include in shenandoahMarkingContext.cpp:
#include "shenandoahGlobalGeneration.hpp"
which doesn't conform to the usual HotSpot including style:
#include "gc/shenandoah/shenandoahGlobalGeneration.hpp"
While the current code works, it not only breaks the usual HotSpot conventions, but also the GraalVM port which depends on these conventions (because it generates stubs/mocks for all the header files which aren't copied over from the original HotSpot code).