check_subtree     254 src/itree.c        = check_subtree (node->left, check_red_black_invariants,
check_subtree     257 src/itree.c        = check_subtree (node->right, check_red_black_invariants,
check_subtree     299 src/itree.c        = check_subtree (node, check_red_black_invariants, tree->otick,