code within statically linked library src files returning null - visual-c++

Question

This is for windows using MSVC compiler version 14.28.29910:
Libraries built using colcon. This was meant for a ROS2 application but I dont believe ROS has anything to do with it.
I have been stuck on this issue for two days now and I still am at a loss as to what is going on. Any help will be greatly appreciated.
I have a library that I am statically linking against. Library A. it is built with colcon. Could this be a linking issue or an issue with the fact that I build library A with a certain set of preprocessors and I build library B with a different set of preprocessors that change the Gameobject class to a different version shown below but same function implementations.
ament_auto_add_library(A STATIC
${SOURCES}
${HEADERS}
)
ament_target_dependencies(A ${ALL_DEPENDS})
install(TARGETS
A
EXPORT A_export
LIBRARY DESTINATION lib
RUNTIME DESTINATION bin
)
ament_export_libraries(A_export HAS_LIBRARY_TARGET)
I then link to it from a ros2 package using the standard
target_link_libraries(B A)
I have a object called Gameobject that is defined in library A.
#file --------------------------Gameobject.h
#ifdef InLibraryA
class Gameobject
{
int GetPosx(){return data.x;}
}
#else
class Gameobject
{
int GetPosx(){return data.x;}
}
#endif
#file --------------------------MoveGameObject.h
class MoveGameObject
{
int MoveGObj_inline(Gameobject* g)
{
return g->getPosx();
}
int MoveGObj(Gameobject* g);
}
#file --------------------------MoveGameObject.cpp
int MoveGameObject::MoveGObj(Gameobject* g)
{
return g->getPosx();
}
Now in library B , I do this within a subscription callback
SomeCallback()
{
Gameobject* g = GetGObjectFromPool();
MoveGameObject* m= new MoveGameObject();
//this will return NULL value
int posx = m->MoveGObj(g);
//this will be fine because it was inlined?
int possx = m->MoveGObj_inline(g);
}
You will see that I get null when calling the function that was NOT inlined for calling the getter function from Gameobject. I dont get null for the inlined function even though they run the exact same code. Note that this only happens to non-inline functions that call Gameobject functions. Does not happen to functions that do not read memory from Gameobject. addingTwoInts() for example works fine Non-inline. There are no errors. It is undefined behavior. Any ideas on what I could be doing wrong for this to happen? The simplified code above is the same as to what is happening in my code, just removed unnecessary details.