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Source file test/const5.go

Documentation: test

  // errorcheck
  
  // Copyright 2011 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 that len non-constants are not constants, https://golang.org/issue/3244.
  
  package p
  
  var b struct {
  	a[10]int
  }
  
  var m map[string][20]int
  
  var s [][30]int
  
  func f() *[40]int
  var c chan *[50]int
  var z complex128
  
  const (
  	n1 = len(b.a)
  	n2 = len(m[""])
  	n3 = len(s[10])
  
  	n4 = len(f())  // ERROR "is not a constant|is not constant"
  	n5 = len(<-c) // ERROR "is not a constant|is not constant"
  
  	n6 = cap(f())  // ERROR "is not a constant|is not constant"
  	n7 = cap(<-c) // ERROR "is not a constant|is not constant"
  	n8 = real(z) // ERROR "is not a constant|is not constant"
  	n9 = len([4]float64{real(z)}) // ERROR "is not a constant|is not constant"
  
  )
  
  

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