From e0b0a9ed95993724494a7f6d9c737044638bf199 Mon Sep 17 00:00:00 2001
From: Dave McDaniel <mcdanieldave@gmail.com>
Date: Thu, 12 Sep 2024 13:11:32 -0400
Subject: [PATCH] address overflow on bitshift in backoff_time

Fixes #29.
---
 src/lib.rs | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index 46e3ca1..f0b01a3 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -490,9 +490,12 @@ impl BackgroundTask {
         })
     }
     fn backoff_time(&self) -> (bool, Duration) {
-        let backoff_count: u64 = self.backoff_count.into();
-        let backoff_time = if backoff_count >= 1 {
-            Duration::from_millis(500 * (1 << (backoff_count - 1)))
+        let backoff_time = if self.backoff_count >= 1 {
+            Duration::from_millis(
+                500u64
+                    .checked_shl(self.backoff_count - 1)
+                    .unwrap_or(u64::MAX),
+            )
         } else {
             Duration::from_millis(0)
         };