From 5e85c33cc7520c649deb26a27cc5037b10a2bc5b Mon Sep 17 00:00:00 2001
From: eigmax <stephen@ieigen.com>
Date: Wed, 16 Aug 2023 01:18:12 +0800
Subject: [PATCH] fix: no panic for degree missing

---
 starky/src/fft_p.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/starky/src/fft_p.rs b/starky/src/fft_p.rs
index 822a6e95..fb205d30 100644
--- a/starky/src/fft_p.rs
+++ b/starky/src/fft_p.rs
@@ -160,6 +160,9 @@ pub fn _fft(
     }
     (bin, bout) = (bout, bin);
 
+    if n_pols <= 0 {
+        return;
+    }
     rayon::scope(|_s| {
         for i in (0..nbits).step_by(blockbits) {
             let s_inc = min(blockbits, nbits - i);