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Source file test/map1.go

Documentation: test

     1  // errorcheck
     2  
     3  // Copyright 2011 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 map declarations of many types, including erroneous ones.
     8  // Does not compile.
     9  
    10  package main
    11  
    12  type v bool
    13  
    14  var (
    15  	// valid
    16  	_ map[int8]v
    17  	_ map[uint8]v
    18  	_ map[int16]v
    19  	_ map[uint16]v
    20  	_ map[int32]v
    21  	_ map[uint32]v
    22  	_ map[int64]v
    23  	_ map[uint64]v
    24  	_ map[int]v
    25  	_ map[uint]v
    26  	_ map[uintptr]v
    27  	_ map[float32]v
    28  	_ map[float64]v
    29  	_ map[complex64]v
    30  	_ map[complex128]v
    31  	_ map[bool]v
    32  	_ map[string]v
    33  	_ map[chan int]v
    34  	_ map[*int]v
    35  	_ map[struct{}]v
    36  	_ map[[10]int]v
    37  
    38  	// invalid
    39  	_ map[[]int]v       // ERROR "invalid map key"
    40  	_ map[func()]v      // ERROR "invalid map key"
    41  	_ map[map[int]int]v // ERROR "invalid map key"
    42  	_ map[T1]v    // ERROR "invalid map key"
    43  	_ map[T2]v    // ERROR "invalid map key"
    44  	_ map[T3]v    // ERROR "invalid map key"
    45  	_ map[T4]v    // ERROR "invalid map key"
    46  	_ map[T5]v
    47  	_ map[T6]v
    48  	_ map[T7]v
    49  	_ map[T8]v
    50  )
    51  
    52  type T1 []int
    53  type T2 struct { F T1 }
    54  type T3 []T4
    55  type T4 struct { F T3 }
    56  
    57  type T5 *int
    58  type T6 struct { F T5 }
    59  type T7 *T4
    60  type T8 struct { F *T7 }
    61  
    62  func main() {
    63  	m := make(map[int]int)
    64  	delete()        // ERROR "missing arguments"
    65  	delete(m)       // ERROR "missing second \(key\) argument"
    66  	delete(m, 2, 3) // ERROR "too many arguments"
    67  	delete(1, m)    // ERROR "first argument to delete must be map"
    68  }

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