Adding upstream version 1.21.8.upstream/1.21.8

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/src/runtime/heap_test.go b/src/runtime/heap_test.go
new file mode 100644
index 0000000..4b73ab5
--- /dev/null
+++ b/src/runtime/heap_test.go
@@ -0,0 +1,21 @@
+// Copyright 2023 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package runtime_test
+
+import (
+	"testing"
+	_ "unsafe"
+)
+
+//go:linkname heapObjectsCanMove runtime.heapObjectsCanMove
+func heapObjectsCanMove() bool
+
+func TestHeapObjectsCanMove(t *testing.T) {
+	if heapObjectsCanMove() {
+		// If this happens (or this test stops building),
+		// it will break go4.org/unsafe/assume-no-moving-gc.
+		t.Fatalf("heap objects can move!")
+	}
+}