* clearListeners.
         */
        Runnable task = requireNonNull(curr.task);
        if (task instanceof SetFuture) {
          SetFuture<?> setFuture = (SetFuture<?>) task;
          // We unwind setFuture specifically to avoid StackOverflowErrors in the case of long
          // chains of SetFutures
          // Handling this special case is important because there is no way to pass an executor to

         * clearListeners.
         */
        Runnable task = requireNonNull(curr.task);
        if (task instanceof SetFuture) {
          SetFuture<?> setFuture = (SetFuture<?>) task;
          // We unwind setFuture specifically to avoid StackOverflowErrors in the case of long
          // chains of SetFutures
          // Handling this special case is important because there is no way to pass an executor to

					// its children.
					removeBranch(parent, branch)
					ft.restore()
					break
				}
				// Otherwise, we can now commit to
				// taking this branch. We'll restore
				// ft when we unwind.
			}

			// Add inductive facts for phis in this block.
			addLocalInductiveFacts(ft, node.block)

			work = append(work, bp{
				block: node.block,
				state: simplify,
			})

	if !x {
		t.Fatal("nestedCall did not call func")
	}
}

func testCallbackGC(t *testing.T) {
	nestedCall(runtime.GC)
}

func testCallbackPanic(t *testing.T) {
	// Make sure panic during callback unwinds properly.
	if lockedOSThread() {
		t.Fatal("locked OS thread on entry to TestCallbackPanic")
	}
	defer func() {
		s := recover()
		if s == nil {
			t.Fatal("did not panic")
		}

			break
		}
	}

	// inlMarks has an entry for each Prog that implements an inline mark.
	// It maps from that Prog to the global inlining id of the inlined body
	// which should unwind to this Prog's location.
	var inlMarks map[*obj.Prog]int32
	var inlMarkList []*obj.Prog

	// inlMarksByPos maps from a (column 1) source position to the set of