1 files changed, 15 insertions, 0 deletions
diff --git a/src/cmd/vet/testdata/copylock/copylock.go b/src/cmd/vet/testdata/copylock/copylock.go
new file mode 100644
index 0000000..7cfafe6
--- /dev/null
+++ b/src/cmd/vet/testdata/copylock/copylock.go
@@ -0,0 +1,15 @@
+// Copyright 2018 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 copylock
+
+import "sync"
+
+func BadFunc() {
+	var x *sync.Mutex
+	p := x
+	var y sync.Mutex
+	p = &y
+	*p = *x // ERROR "assignment copies lock value to \*p: sync.Mutex"
+}