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      1 // run
      2 
      3 // Copyright 2009 The Go Authors. All rights reserved.
      4 // Use of this source code is governed by a BSD-style
      5 // license that can be found in the LICENSE file.
      6 
      7 // Test interface methods with different return types are distinct.
      8 
      9 package main
     10 
     11 type S struct { a int }
     12 type T struct { b string }
     13 
     14 func (s *S) Name() int8 { return 1 }
     15 func (t *T) Name() int64 { return 64 }
     16 
     17 type I1 interface { Name() int8 }
     18 type I2 interface { Name() int64 }
     19 
     20 func main() {
     21 	shouldPanic(p1)
     22 }
     23 
     24 func p1() {
     25 	var i1 I1
     26 	var s *S
     27 	i1 = s
     28 	print(i1.(I2).Name())
     29 }
     30 
     31 func shouldPanic(f func()) {
     32 	defer func() {
     33 		if recover() == nil {
     34 			panic("function should panic")
     35 		}
     36 	}()
     37 	f()
     38 }
     39