From 9062a94f31c2b8b4cfc711cdea2c011d2b88816d Mon Sep 17 00:00:00 2001
From: kandykoma <61843984+kandykoma@users.noreply.github.com>
Date: Fri, 6 Mar 2020 02:40:55 +0900
Subject: [PATCH] limit recursion to the number of objects

---
 src/document.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/document.rs b/src/document.rs
index 00e2e8f..e205c5b 100644
--- a/src/document.rs
+++ b/src/document.rs
@@ -296,8 +296,14 @@ impl Iterator for PageTreeIter<'_> {
 	type Item = ObjectId;
 
 	fn next(&mut self) -> Option<Self::Item> {
+		let mut objcount = self.doc.objects.len();
 		loop {
 			while let Some((kid, new_kids)) = self.kids.and_then(|k| k.split_first()) {
+				if objcount == 0 {
+					return None;
+				}
+				objcount -= 1;
+				
 				self.kids = Some(new_kids);
 
 				if let Ok(kid_id) = kid.as_reference() {