issue5231.go

     1  // compile
     2  
     3  // Copyright 2013 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  // Issue 5231: method values lose their variadic property.
     8  
     9  package p
    10  
    11  type T int
    12  
    13  func (t T) NotVariadic(s []int) int {
    14  	return int(t) + s[0]
    15  }
    16  
    17  func (t T) Variadic(s ...int) int {
    18  	return int(t) + s[0]
    19  }
    20  
    21  type I interface {
    22  	NotVariadic(s []int) int
    23  	Variadic(s ...int) int
    24  }
    25  
    26  func F() {
    27  	var t T
    28  	var p *T = &t
    29  	var i I = p
    30  
    31  	nv := t.NotVariadic
    32  	nv = p.NotVariadic
    33  	nv = i.NotVariadic
    34  	var s int = nv([]int{1, 2, 3})
    35  
    36  	v := t.Variadic
    37  	v = p.Variadic
    38  	v = i.Variadic
    39  	s = v(1, 2, 3)
    40  
    41  	var f1 func([]int) int = nv
    42  	var f2 func(...int) int = v
    43  
    44  	_, _, _ = f1, f2, s
    45  }
    46
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