1 files changed, 38 insertions, 0 deletions
diff --git a/test/interface/returntype.go b/test/interface/returntype.go
new file mode 100644
index 0000000..4d86f39
--- /dev/null
+++ b/test/interface/returntype.go
@@ -0,0 +1,38 @@
+// run
+
+// 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.
+
+// Test interface methods with different return types are distinct.
+
+package main
+
+type S struct { a int }
+type T struct { b string }
+
+func (s *S) Name() int8 { return 1 }
+func (t *T) Name() int64 { return 64 }
+
+type I1 interface { Name() int8 }
+type I2 interface { Name() int64 }
+
+func main() {
+	shouldPanic(p1)
+}
+
+func p1() {
+	var i1 I1
+	var s *S
+	i1 = s
+	print(i1.(I2).Name())
+}
+
+func shouldPanic(f func()) {
+	defer func() {
+		if recover() == nil {
+			panic("function should panic")
+		}
+	}()
+	f()
+}