From a6051a61ec5c96113f4b543de3ec55431695347a Mon Sep 17 00:00:00 2001
From: Blas Rodriguez Irizar <rodrigblas@gmail.com>
Date: Wed, 2 Dec 2020 22:58:28 +0100
Subject: sync: make add_permits panic with usize::MAX >> 3 permits (#3188)

---
 tokio/src/sync/batch_semaphore.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'tokio/src/sync/batch_semaphore.rs')

diff --git a/tokio/src/sync/batch_semaphore.rs b/tokio/src/sync/batch_semaphore.rs
index 0b50e4f7..8736971a 100644
--- a/tokio/src/sync/batch_semaphore.rs
+++ b/tokio/src/sync/batch_semaphore.rs
@@ -253,9 +253,9 @@ impl Semaphore {
             }
 
             if rem > 0 && is_empty {
-                let permits = rem << Self::PERMIT_SHIFT;
+                let permits = rem;
                 assert!(
-                    permits < Self::MAX_PERMITS,
+                    permits <= Self::MAX_PERMITS,
                     "cannot add more than MAX_PERMITS permits ({})",
                     Self::MAX_PERMITS
                 );
-- 
cgit v1.2.3