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-rw-r--r--test/fixedbugs/issue21879.go37
1 files changed, 37 insertions, 0 deletions
diff --git a/test/fixedbugs/issue21879.go b/test/fixedbugs/issue21879.go
new file mode 100644
index 0000000..1029ca0
--- /dev/null
+++ b/test/fixedbugs/issue21879.go
@@ -0,0 +1,37 @@
+// run
+
+// 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.
+
+package main
+
+import (
+ "runtime"
+)
+
+func main() {
+ println(caller().frame.Function)
+
+ // Used to erroneously print "main.call.name" instead of
+ // "main.main".
+ println(caller().name())
+}
+
+func caller() call {
+ var pcs [3]uintptr
+ n := runtime.Callers(1, pcs[:])
+ frames := runtime.CallersFrames(pcs[:n])
+ frame, _ := frames.Next()
+ frame, _ = frames.Next()
+
+ return call{frame: frame}
+}
+
+type call struct {
+ frame runtime.Frame
+}
+
+func (c call) name() string {
+ return c.frame.Function
+}