Source file test/makechan.go

     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  // Ensure that typed non-integer, negative and too large
     8  // values are not accepted as size argument in make for
     9  // channels.
    10  
    11  package main
    12  
    13  type T chan byte
    14  
    15  var sink T
    16  
    17  func main() {
    18  	sink = make(T, -1)            // ERROR "negative buffer argument in make.*|must not be negative"
    19  	sink = make(T, uint64(1<<63)) // ERROR "buffer argument too large in make.*|overflows int"
    20  
    21  	sink = make(T, 0.5) // ERROR "constant 0.5 truncated to integer|truncated to int"
    22  	sink = make(T, 1.0)
    23  	sink = make(T, float32(1.0)) // ERROR "non-integer buffer argument in make.*|must be integer"
    24  	sink = make(T, float64(1.0)) // ERROR "non-integer buffer argument in make.*|must be integer"
    25  	sink = make(T, 1+0i)
    26  	sink = make(T, complex64(1+0i))  // ERROR "non-integer buffer argument in make.*|must be integer"
    27  	sink = make(T, complex128(1+0i)) // ERROR "non-integer buffer argument in make.*|must be integer"
    28  }
    29  

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