chktree           919 gc/tests/test.c     chktree(t -> lchild, n-1);
chktree           924 gc/tests/test.c     chktree(t -> rchild, n-1);
chktree          1045 gc/tests/test.c     chktree(root, TREE_HEIGHT);
chktree          1054 gc/tests/test.c     chktree(root, TREE_HEIGHT);
chktree          1057 gc/tests/test.c         chktree(root, i);