From 2f71dc719bf16fa8183e616e1f4f51003cdbdcc6 Mon Sep 17 00:00:00 2001
From: sashass1315 <sashass1315@gmail.com>
Date: Wed, 24 Sep 2025 15:35:49 +0300
Subject: [PATCH] ff-macros: reject zero unroll factor in unroll_for_loops

---
 ff-macros/src/lib.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ff-macros/src/lib.rs b/ff-macros/src/lib.rs
index 41e19f0bd..87ff840ca 100644
--- a/ff-macros/src/lib.rs
+++ b/ff-macros/src/lib.rs
@@ -84,6 +84,10 @@ pub fn unroll_for_loops(args: TokenStream, input: TokenStream) -> TokenStream {
         _ => panic!("{}", ARG_MSG),
     };
 
+    if unroll_by == 0 {
+        panic!("{}", ARG_MSG);
+    }
+
     let item: Item = syn::parse(input).expect("Failed to parse input.");
 
     if let Item::Fn(item_fn) = item {