From 2f3e984cb5c9b2de83c572cc1cc6c866f2db0e37 Mon Sep 17 00:00:00 2001
From: Daniel Spiewak <djspiewak@gmail.com>
Date: Sat, 24 Jul 2021 16:02:22 -0600
Subject: [PATCH] Make off-by-one errors slightly less likely

---
 .../src/main/scala/cats/effect/unsafe/IORuntimeConfig.scala     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/shared/src/main/scala/cats/effect/unsafe/IORuntimeConfig.scala b/core/shared/src/main/scala/cats/effect/unsafe/IORuntimeConfig.scala
index 885479bc6c..54f7c407b0 100644
--- a/core/shared/src/main/scala/cats/effect/unsafe/IORuntimeConfig.scala
+++ b/core/shared/src/main/scala/cats/effect/unsafe/IORuntimeConfig.scala
@@ -80,7 +80,7 @@ object IORuntimeConfig extends IORuntimeConfigCompanionPlatform {
         cancelationCheckThreshold,
         autoYieldThreshold,
         enhancedExceptions,
-        2 << (Math.round(Math.log(traceBufferSize.toDouble) / Math.log(2)).toInt - 1))
+        1 << Math.round(Math.log(traceBufferSize.toDouble) / Math.log(2)).toInt)
     else
       throw new AssertionError(
         s"Auto yield threshold $autoYieldThreshold must be a multiple of cancelation check threshold $cancelationCheckThreshold")