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Source file test/copy1.go

Documentation: test

     1  // errorcheck
     2  
     3  // Copyright 2017 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  // Verify that copy arguments requirements are enforced by the
     8  // compiler.
     9  
    10  package main
    11  
    12  func main() {
    13  
    14  	si := make([]int, 8)
    15  	sf := make([]float64, 8)
    16  
    17  	_ = copy()        // ERROR "missing arguments"
    18  	_ = copy(1, 2, 3) // ERROR "too many arguments"
    19  
    20  	_ = copy(si, "hi") // ERROR "have different element types.*int.*string"
    21  	_ = copy(si, sf)   // ERROR "have different element types.*int.*float64"
    22  
    23  	_ = copy(1, 2)  // ERROR "must be slices; have int, int"
    24  	_ = copy(1, si) // ERROR "first argument to copy should be"
    25  	_ = copy(si, 2) // ERROR "second argument to copy should be"
    26  
    27  }
    28  

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