From cca3cf7827a93538945ec1947c416e65cd40bd4e Mon Sep 17 00:00:00 2001
From: Bert Peters <bert@bertptrs.nl>
Date: Mon, 24 May 2021 12:15:14 +0200
Subject: [PATCH] Fix unintentional exponential order ids

---
 src/graph.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/graph.rs b/src/graph.rs
index 759f874..aea1839 100644
--- a/src/graph.rs
+++ b/src/graph.rs
@@ -49,7 +49,7 @@ where
 
         let order = *self.ord.entry(n).or_insert_with(|| {
             let order = *next_ord;
-            *next_ord += next_ord.checked_add(1).expect("Topological order overflow");
+            *next_ord = next_ord.checked_add(1).expect("Topological order overflow");
             order
         });