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-rw-r--r--src/runtime/stack.go13
1 files changed, 13 insertions, 0 deletions
diff --git a/src/runtime/stack.go b/src/runtime/stack.go
new file mode 100644
index 000000000..f1b7d32d2
--- /dev/null
+++ b/src/runtime/stack.go
@@ -0,0 +1,13 @@
+// Copyright 2011 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
+
+const (
+ // Goroutine preemption request.
+ // Stored into g->stackguard0 to cause split stack check failure.
+ // Must be greater than any real sp.
+ // 0xfffffade in hex.
+ stackPreempt = ^uintptr(1313)
+)