From 10934a4c2fa004f2125957670fb7bea5492d256f Mon Sep 17 00:00:00 2001
From: Jojakim Stahl <j.stahl@demig.de>
Date: Sun, 2 Feb 2025 22:12:53 +0100
Subject: [PATCH] Fix NONCONSUMPTION_IS_OK for Flatten

---
 src/combinator.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/combinator.rs b/src/combinator.rs
index 82c1ddaa..e1d80f4e 100644
--- a/src/combinator.rs
+++ b/src/combinator.rs
@@ -2187,7 +2187,10 @@ where
 {
     type IterState<M: Mode> = (A::IterState<M>, Option<M::Output<O::IntoIter>>);
 
-    const NONCONSUMPTION_IS_OK: bool = A::NONCONSUMPTION_IS_OK;
+    // A::NONCONSUMPTION_IS_OK cannot be used because if we are iterating
+    // over O, we are not consuming any input (input has probably
+    // already been comsumed when constructing O)
+    const NONCONSUMPTION_IS_OK: bool = true;
 
     #[inline(always)]
     fn make_iter<M: Mode>(