heaps_increment   967 gc.c               	if (!heaps_increment(objspace) && !garbage_collect(objspace)) {
heaps_increment  1785 gc.c           	heaps_increment(objspace);
heaps_increment  2006 gc.c                       if (!heaps_increment(objspace)) {
heaps_increment  2008 gc.c                           heaps_increment(objspace);