From 0631bc4fecf9a9f96c8a520ac56371a0a86318b9 Mon Sep 17 00:00:00 2001
From: Quentin Carbonneaux <quentin@c9x.me>
Date: Mon, 17 Jun 2024 13:18:05 +0200
Subject: [PATCH] prevent bogus simplifications

---
 simpl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/simpl.c b/simpl.c
index 99e09df..7186d2f 100644
--- a/simpl.c
+++ b/simpl.c
@@ -51,7 +51,7 @@ ulog2(uint64_t pow2)
 static int
 ispow2(uint64_t v)
 {
-	return (v & (v - 1)) == 0;
+	return v && (v & (v - 1)) == 0;
 }
 
 static void
-- 
2.11.4.GIT