add a GC safepoint in Task.wait (#41441)

vilterp · web-flow · commit 97f817a379b0 · 2021-07-07T18:58:21.000-04:00
diff --git a/base/task.jl b/base/task.jl
@@ -818,6 +818,7 @@ end
 end
 
 function wait()
+    GC.safepoint()
     W = Workqueues[Threads.threadid()]
     poptask(W)
     result = try_yieldto(ensure_rescheduled)
