issue21979.go

     1  // errorcheck
     2  
     3  // Copyright 2019 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  package p
     8  
     9  func f() {
    10  	_ = bool("")      // ERROR "cannot convert .. \(.*untyped string.*\) to type bool|invalid type conversion"
    11  	_ = bool(1)       // ERROR "cannot convert 1 \(.*untyped int.*\) to type bool|invalid type conversion"
    12  	_ = bool(1.0)     // ERROR "cannot convert 1.* \(.*untyped float.*\) to type bool|invalid type conversion"
    13  	_ = bool(-4 + 2i) // ERROR "cannot convert -4 \+ 2i \(.*untyped complex.*\) to type bool|invalid type conversion"
    14  
    15  	_ = string(true) // ERROR "cannot convert true \(.*untyped bool.*\) to type string|invalid type conversion"
    16  	_ = string(-1)
    17  	_ = string(1.0)     // ERROR "cannot convert 1.* \(.*untyped float.*\) to type string|invalid type conversion"
    18  	_ = string(-4 + 2i) // ERROR "cannot convert -4 \+ 2i \(.*untyped complex.*\) to type string|invalid type conversion"
    19  
    20  	_ = int("")   // ERROR "cannot convert .. \(.*untyped string.*\) to type int|invalid type conversion"
    21  	_ = int(true) // ERROR "cannot convert true \(.*untyped bool.*\) to type int|invalid type conversion"
    22  	_ = int(-1)
    23  	_ = int(1)
    24  	_ = int(1.0)
    25  	_ = int(-4 + 2i) // ERROR "truncated to integer|cannot convert -4 \+ 2i \(.*untyped complex.*\) to type int"
    26  
    27  	_ = uint("")   // ERROR "cannot convert .. \(.*untyped string.*\) to type uint|invalid type conversion"
    28  	_ = uint(true) // ERROR "cannot convert true \(.*untyped bool.*\) to type uint|invalid type conversion"
    29  	_ = uint(-1)   // ERROR "constant -1 overflows uint|integer constant overflow|cannot convert -1 \(untyped int constant\) to type uint"
    30  	_ = uint(1)
    31  	_ = uint(1.0)
    32  	// types1 reports extra error "truncated to integer"
    33  	_ = uint(-4 + 2i) // ERROR "constant -4 overflows uint|truncated to integer|cannot convert -4 \+ 2i \(untyped complex constant.*\) to type uint"
    34  
    35  	_ = float64("")   // ERROR "cannot convert .. \(.*untyped string.*\) to type float64|invalid type conversion"
    36  	_ = float64(true) // ERROR "cannot convert true \(.*untyped bool.*\) to type float64|invalid type conversion"
    37  	_ = float64(-1)
    38  	_ = float64(1)
    39  	_ = float64(1.0)
    40  	_ = float64(-4 + 2i) // ERROR "truncated to|cannot convert -4 \+ 2i \(.*untyped complex.*\) to type float64"
    41  
    42  	_ = complex128("")   // ERROR "cannot convert .. \(.*untyped string.*\) to type complex128|invalid type conversion"
    43  	_ = complex128(true) // ERROR "cannot convert true \(.*untyped bool.*\) to type complex128|invalid type conversion"
    44  	_ = complex128(-1)
    45  	_ = complex128(1)
    46  	_ = complex128(1.0)
    47  }
    48
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