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-rw-r--r--test/typeswitch2.go28
1 files changed, 28 insertions, 0 deletions
diff --git a/test/typeswitch2.go b/test/typeswitch2.go
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+++ b/test/typeswitch2.go
@@ -0,0 +1,28 @@
+// errchk $G -e $D/$F.go
+
+// Copyright 2009 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 "io"
+
+func whatis(x interface{}) string {
+ switch x.(type) {
+ case int:
+ return "int"
+ case int: // ERROR "duplicate"
+ return "int8"
+ case io.Reader:
+ return "Reader1"
+ case io.Reader: // ERROR "duplicate"
+ return "Reader2"
+ case interface { r(); w() }:
+ return "rw"
+ case interface { w(); r() }: // ERROR "duplicate"
+ return "wr"
+
+ }
+ return ""
+}