/* Initialize *LOC to "nowhere", push it onto the location stack. The top of that stack is the current location. Needs a matching loc_pop(). Return LOC.  */
Location* loc_push_none(Location *loc)
/* Initialize *LOC to "nowhere", push it onto the location stack. The top of that stack is the current location. Needs a matching loc_pop(). Return LOC.  */
Location* loc_push_none(Location *loc)
{
    loc->kind = LOC_NONE;
    loc->prev = NULL;
    return loc_push_restore(loc);
}