1 files changed, 13 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/gc/bootstrap.go b/src/cmd/compile/internal/gc/bootstrap.go
new file mode 100644
index 0000000..967f75a
--- /dev/null
+++ b/src/cmd/compile/internal/gc/bootstrap.go
@@ -0,0 +1,13 @@
+// Copyright 2017 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.
+
+// +build !go1.8
+
+package gc
+
+import "runtime"
+
+func startMutexProfiling() {
+	Fatalf("mutex profiling unavailable in version %v", runtime.Version())
+}