Merge pull request #1682 from vasilmkd/null-out-ref

Null out reference to last stolen fiber
typelevel · Feb 12, 2021 · 4b0ad0a · 4b0ad0a
2 parents 6909a54 + e4e7bb8
commit 4b0ad0a
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/core/jvm/src/main/scala/cats/effect/unsafe/WorkStealingQueue.scala b/core/jvm/src/main/scala/cats/effect/unsafe/WorkStealingQueue.scala
@@ -305,6 +305,7 @@ private final class WorkStealingQueue {
     // fiber has already been written by `internalStealInto` but the
     // tail has still not been published.
     val ret = dst.buffer(retIdx)
+    dst.buffer(retIdx) = null
 
     if (n == 0) {
       // No need for arithmetic and volatile updates. We are immediately