From ea0944e64890c4e1998a0bb41f571112d34bba1e Mon Sep 17 00:00:00 2001
From: Sola <dev@sola.love>
Date: Sat, 26 Jul 2025 18:30:52 +0800
Subject: [PATCH] fix: `max_files` integer underflow when set to zero

---
 tracing-appender/src/rolling/builder.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tracing-appender/src/rolling/builder.rs b/tracing-appender/src/rolling/builder.rs
index 8c92ca1238..b53e61fab3 100644
--- a/tracing-appender/src/rolling/builder.rs
+++ b/tracing-appender/src/rolling/builder.rs
@@ -228,7 +228,7 @@ impl Builder {
     #[must_use]
     pub fn max_log_files(self, n: usize) -> Self {
         Self {
-            max_files: Some(n),
+            max_files: Some(n).filter(|&n| n > 0),
             ..self
         }
     }