THREADNODE       4684 ext/imap/php_imap.c static void build_thread_tree_helper(THREADNODE *cur, zval *tree, long *numNodes, char *buf)
THREADNODE       4715 ext/imap/php_imap.c static int build_thread_tree(THREADNODE *top, zval **tree)
THREADNODE       4736 ext/imap/php_imap.c 	THREADNODE *top;