THREADNODE       4662 ext/imap/php_imap.c static void build_thread_tree_helper(THREADNODE *cur, zval *tree, long *numNodes, char *buf)
THREADNODE       4693 ext/imap/php_imap.c static int build_thread_tree(THREADNODE *top, zval **tree)
THREADNODE       4714 ext/imap/php_imap.c 	THREADNODE *top;