2 files changed, 30 insertions, 0 deletions
diff --git a/misc/cgo/test/backdoor/backdoor.go b/misc/cgo/test/backdoor/backdoor.go
new file mode 100644
index 000000000..efe4f01f4
--- /dev/null
+++ b/misc/cgo/test/backdoor/backdoor.go
@@ -0,0 +1,7 @@
+// Copyright 2012 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 backdoor
+
+func LockedOSThread() bool // in runtime.c
diff --git a/misc/cgo/test/backdoor/runtime.c b/misc/cgo/test/backdoor/runtime.c
new file mode 100644
index 000000000..54e6a1ef8
--- /dev/null
+++ b/misc/cgo/test/backdoor/runtime.c
@@ -0,0 +1,23 @@
+// 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.
+
+// Expose some runtime functions for testing.
+// Must be in a non-cgo-using package so that
+// the go command compiles this file with 6c, not gcc.
+
+typedef char bool;
+
+bool runtime·lockedOSThread(void);
+
+static void
+FLUSH(void*)
+{
+}
+
+void
+·LockedOSThread(bool b)
+{
+	b = runtime·lockedOSThread();
+	FLUSH(&b);
+}