From d83959d976d69d6de3bbd150c5cc46556456a824 Mon Sep 17 00:00:00 2001
From: Dirkjan Ochtman <dirkjan@ochtman.nl>
Date: Mon, 14 Aug 2017 20:40:48 +0200
Subject: Assert invariant for SetChain implementation

---
 askama_derive/src/generator.rs | 1 +
 1 file changed, 1 insertion(+)

(limited to 'askama_derive/src/generator.rs')

diff --git a/askama_derive/src/generator.rs b/askama_derive/src/generator.rs
index b00094d..75e4a2d 100644
--- a/askama_derive/src/generator.rs
+++ b/askama_derive/src/generator.rs
@@ -589,5 +589,6 @@ impl<'a, T: 'a> SetChain<'a, T> where T: cmp::Eq + hash::Hash {
     }
     fn pop(&mut self) {
         self.scopes.pop().unwrap();
+        assert!(self.scopes.len() > 0);
     }
 }
-- 
cgit